Antimicrobial and antifungal activities of the extracts and essential oils of Bidens tripartita.

The aim of this study was to determine the antibacterial and antifungal properties of the extracts, subextracts and essential oils of Bidens tripartita flowers and herbs. In the study, twelve extracts and two essential oils were investigated for activity against different Gram-positive Bacillus subtilis, Micrococcus luteus, Staphylococcus aureus, Gram-negative bacteria Escherichia coli, E. coli (beta-laktamase+), Klebsiella pneumoniae (ESBL+), Pseudomonas aeruginosa and some fungal organisms Candida albicans, C.

[Vancomycin resistance among strains of Enterococcus faecium].

A total of 48 clinical isolates of Enterococcus faecium were tested for their susceptibility to glycopeptide antibiotics (vancomycin and teicoplanin). We observed a low-level of resistance to vancomycin (phenotype Van B) for 4.2% isolates.

[Susceptibility of Staphylococcus aureus to new macrolide antibiotics].

A total of 73 isolates of Staphylococcus aureus (26 - MRSA, 47 - MSSA) were tested for their susceptibility to macrolide antibiotics and new derivatives (azalide - azythromycin and ketolide -telithromycin). We observed a high - level resistance of MRSA isolates to all tested antibiotics. Over 96% of isolates were resistant to macrolides and azalides and 92,3% to ketolides.

[Participation of metallo-beta-lactamases in resistance to imipenem and meropenem in clinical strains of Pseudomonas aeruginosa and Acinetobacter spp].

Unlabelled: Imipenem and/or meropenem resistance has been observed commonly in nonfermenter species such as Pseudomonas aeruginosa (P. aeruginosa) and Acinetobacter spp. An increasing prevalence of carbapenems resistance mediated by acquired metallo-beta-lactamases (MBLs) is being reported particularly for Gram-negative rods in several countries.

Antimicrobial activity of Potentilla species.

The antibacterial and antifungal activities of aqueous extracts obtained from aerial parts of Potentilla species: P. anserina, P. argentea, P.

Fluoride release and antibacterial activity of selected dental materials.

The aim of the study was to assess the fluoride ion release and antibacterial activities of the glassionomer cement Fuji IX and the compomer (composite modified polyacid) Dyract AP. Fluoride ion release was measured using direct potentiometry with an Orion fluoride ion selective electrode. The measurement was carried out after 1, 4, 7, 14, 30, and 60 days of storage in phosphate buffer at pH 6.

The presence of blaIMP genes on plasmids DNA isolated from multidrug-resistant Pseudomonas aeruginosa strains at University Hospital in Bialystok (Poland)--first report.

Resistance to carbapenems is emerging, and it is a great problem to therapeutics. Seven multidrug-resistant (MDR) of Pseudomonas aeruginosa strains were isolated from urine and bronchial specimens. All isolates showed resistance to imipenem and meropenem (MIC; > or =16 mg/L).

[The role of aminoglycoside--modifying enzymes in resistance of Gram-negative rods].

The aim of the study was to evaluate the aminoglycoside resistance of Gram-negative bacilli isolated from patients. To the examination 35 strains of Enterobacteriaceae and 18 of non-fermentative bacteria were included. Resistance to aminoglycosides (gentamicin (G), netilmicin (Nt), tobramycin (T), amikacin (A), kanamycin (K), neomycin (N)) was established by disk diffusion method.

[The study of the presence of HpSA antigens in the faeces in Helicobacter pylori infection].

A total of 154 adult patients with dyspeptic symptoms were studied. In case of 115 (74,68%) persons Helicobacter pylori infection was detected, taking into consideration positive results in a rapid urease test and histological examination and presence of antibodies in the serum. In 69,6% predominated high (> 72 IU/ml) level specific anty-H.

[Sanfetrinem, the member of trinems--in vitro activity against Klebsiella pneumoniae producing ESBL].

Sanfetrinem is the first member of tricyclic beta-lactams (trinems) which can be administered orally as a hexatil ester. His chemical structure is related to carbapenems. High stability to many beta-lactamases and human renal dehydropeptydase were described.

[The application of immunoperoxidase test for the detection of antibodies various classes (IgA, IgG and IgM) coating bacteria in urine].

For the detection of bacteria coated with immunoglobulins in urine the monoclonal antibodies against human IgA, IgG and IgM conjugated with peroxidase were used. For comparison, the immunofluorescence technique was also employed. The results obtained by two methods revealed that immunofluorescence were less sensitive.

Flavonoid composition and antimicrobial activity of Cirsium rivulare (Jacq.) All. flowers.

A new flavonoid compound isokaempferide 7-O-beta-d-(6''-methylglucuronide) (1) was isolated from flowers of Cirsium rivulare (Jacq.) All. Its structure was elucidated on the basis of spectroscopic studies (UV, (1)H and (13)C NMR, FABMS).

[Adaptation of immunoenzymatic method for detection of antibody coated bacteria in urine].

The modified immunoenzymatic method for detection of antibody coated bacteria (IP ACB) was compared with immunofluorescence technique (IF ACB) in the diagnosis of urinary tract infection. For the study 100 patients were employed with significant and insignificant bacteriuria. It was found that 81% of the results obtained by IP ACB and IF ACB were identical, however the immunoenzymatic method was more sensitive than immunofluorescence.

[Antibiotic susceptibility and occurrence of ESBL in Pseudomonas aeruginosa strains isolated from different clinical specimens].

The aim of this study was to evaluate the drug susceptibility of 132 P. aeruginosa strains isolated from patients hospitalized in SPSK University Hospital in Bialystok. The isolates were obtained from clinical specimens over an 11-month period in 2001 and 2002.

[Susceptibility of Branhamella catarrhalis to antibiotics].

A total of 98 isolates of Branhamella catarrhalis were examined for their susceptibility to antibiotics using serial dilution method. Nitrocefin test was employed for detection of beta-lactamase activity. It was found that most of the isolates (71%) were resistant to ampicillin.

[Therapeutic effect of some antibiotics on experimental staphylococcal infection and its correlation with in vitro activity of antibiotics in sub-inhibitory concentration against Staphylococcus aureus strains].

The aim of the study was to demonstrate of whether the therapeutic effects of antibiotics depend on their in vitro activity in sub-inhibitory concentrations against staphylococci. Cloxacillin, gentamicin and lincomycin were used in the study. Groups of S.

Pyrrole analogues of chloramphenicol. III. Synthesis and antibacterial activity of DL-threo-1-(1-methylsulfonylpyrrole-3-yl)-2-dichloroacetamidopropane-1,3-diol.

A seven-stage synthesis of a pyrrole analogue of chloramphenicol (9) is described. The compound exhibits a significant antibacterial activity, over the 3% to 50% range of the chloramphenicol activity: over the 6% to 100% range of the thiamphenicol activity and florfenicol.