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PubMed1994

[Pneumonia complicated by bacteremia with Stomatococcus mucilaginosus].

A rare strain of Stomatococcus mucilaginosus (formerly Micrococcus) was isolated from blood of a patient after pneumonia, which was causing an enlargement of lymph nodes and groin fistula. Chemical composition of cell wall of this microorganism (analysis of amino acids and diagnostically important sugars), elementary composition of lipids (fatty acids, phospholipids and glycolipids) and molar percentage of guanine and cytosine (%GC), were determined. Results completely agreeable with results published elsewhere were obtained which resulted in reclassification of this species (Kocur (1982, Int. J.Sys.Bacterial. 32, 374-377)). This case indicates that some relative pathogens require modern diagnostic methods and when not recognized in cases of acquired or directed immunosuppression can create a serious threat.

Bacteremia↗
PubMed1975

In vitro study of the influence of virginiamycin and spiramycin on the composition and biochemical activities of the gastrointestinal flora of piglets. II. Influence on the biochemical activities of the microflora.

Chemical analysis was carried out on 54 in vitro fermentations to study the influence of nutritional doses of Virginiamycin and Spiramycin on the metabolic activity of the gastro-intestinal flora of 18 in vivo treated piglets. Changes in the decomposition of glucose and the production of NH3, volatile acids and lactic acid are recorded in function of time. These results are in good accordance with changes noted in the composition of the bacterial flora, such as a marked decrease in the production of lactic acid, caused by Virginiamycin, combined with a decrease in the number of Lactobacilli and Enterococci. Virginiamycin caused marked changes in the metabolic activity of certain groups of bacteria, while there was only a slight effect noted for Spiramycin, although in vivo treatments with this antibiotic still show up in the results of the in vitro incubations. The overall results indicate that both antibiotics have marked influences on the intestinal flora of the pig, either by selective inhibiting of the flora resulting in a change of the metabolities formed, either by a change in the metabolic activity of some bacterial groups.

Acetates↗
PubMed1975

Staphylococcal micrococcins. III. Antibacterial and therapeutic properties.

Micrococcin M, micrococcin M1 and eight micrococcin M derivatives, and two peptide antibiotics produced by micrococci and staphylococci were investigated for their antibacterial activity and therapeutic value. These antibiotics appeared to act solely on Gram-positive bacteria, especially on staphylococci and streptococci, in quite low concentrations in vitro and exerting both bacteriostatic and bactericidal effects. Gram-negative bacteria were virtually not susceptible. Resistance to micrococcins developed very rapidly, due to existence of numerous primarily resistant cells in sensitive populations. Complete cross-resistance resulted from acquiring resistance to one of the micrococcin antibiotics. Therapeutic effects are poor, as micrococcins are not absorbed from the injection site or from the intestinal tract after peroral administration. Importance of micrococcins in nature may be high, especially when ecology of normal bacterial flora and carriage of staphylococci and streptococci are concerned.

Animals↗
PubMed1976

[Bactericidal effect of Dikonit].

The research centre of the Lachema nat Bohumín has developed new disinfectants with active chlorine on the basis of chlorinated derivatives of cyanuric acid. According to the physical and chemical properties, Dikon (sodium dichlorisocyanurate) was chosen as the best of these products; Later on, Dikon was given the trade mark Dikonit. Its minimum content of active chlorine is 55%. The purpose of the work was to test its bactericidal effect and to compare it with the effect of chloramin B. Tests on carriers and under practical conditions have demonstrated that, with the same content of active chlorine in solutions in practical use, Dikonit has almost the same bactericidal effect as Chloramin B produced so far. Due to this good bactericidal effect, Dikonit is a suitable means for prophylactic and focal disinfection in animal production and provides a good enrichment of the disinfectants based on active chlorine and produced in Czechoslovakia. It is recommended for prophylactic disinfection to use 1% solutions of Dikonit which are able to give the same effect in all parameters as warm solutions of 2-per-cent Chloramin B. The effective concentration to be used for focal disinfections can be deduced only approximately from the resistance of the infective agent with respect to the concentrations of Chloramin B, recommended as yet. An exact determination of the effective concentration would require experimental verification.

Bacteria↗
PubMed1996

[Effect of premortal stress on the endogenous microbial contamination of broiler carcasses].

A study was undertaken to determine the interrelation between premortal stress and endogenic contamination. In 370 broilers the influence of transport, of a 48-h rest period and of an additional heat stress on the bacterial translocation was investigated. Even the normal transportation caused a contamination rate of nearly 50 per cent. 10 per cent of the transported animals suffered from a bacteriaemia induced by stress. The control group showed a significantly lower contamination rate. The rest time reduced the frequency of contamination. Heat stress did not have an influence on the contamination rate. The conclusion is that stress is aggravating the microbial risk for the consumer of poultry meat. Further research is necessary for characterizing the process of endogenic contamination.

Abattoirs↗
PubMed1998

Severe infection caused by Stomatococcus mucilaginosus in a neutropenic patient: case report and review of the literature.

A 24-year-old female, in neutropenic phase after chemotherapy for acute myelogenous leukemia (on day 15) was admitted in intensive care unit for infectious pneumonia. Two strains of Stomatococcus mucilaginosus were isolated from peripheral blood cultures. No microorganisms were yielded from bronchoalveolar lavage. Patient's condition improved with prompt instigation of effective antibiotic therapy. This was the first case of septicemia and pneumonia, due to Stomatococcus mucilaginosus, in our unit. Only 26 cases occurring in neutropenic patients with underlying hematologic malignancies were reported in the literature and among these, only five cases with pneumonia were described. The complications of this normal inhabitant of the human oral cavity can be serious and fatal: septic shock, meningitis, acute respiratory distress syndrome. This study illustrate the possible virulence of Stomatococcus mucilaginosus in neutropenic patients.

Acute Disease↗