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Biomedical subjects

M Rysselaere

Publications and source records attributed to M Rysselaere.

14 recordsLinked to original sources
PubMed1998

Rhizomucor pusillus mucormycosis combined with chlamydiosis in an African grey parrot (Psittacus erithacus erithacus).

This paper describes a case of mucormycosis combined with chlamydiosis in an African grey parrot (Psittacus erithacus erithacus). The clinical signs included diarrhoea, an unsteady gait and a twisted neck. Smears of the spleen, liver and contents of the cloaca stained strongly positive for Chlamydia species. Histologically, hyphae typical of Zygomycetes were observed invading through the walls of blood vessels of the spleen. Rhizomucor pusillus was isolated as a pure culture from the intestines, lungs and liver.

Animals↗
PubMed1991

Bacteriological study of 92 cases of proven infectious endophthalmitis treated with pars plana vitrectomy.

92 cases of proven infectious endophthalmitis underwent pars plana vitrectomy first to identify the responsible agent and directing the antibiotherapy, second to remove the abscess and third to make room for intravitreal injection of antibiotics. A wide spectrum of organisms was isolated (16 different agents). Prognosis of endophthalmitis depends on (1) the responsible agent and (2) the reason for developing the endophthalmitis. The prognosis after lens implantation was rather favorable, whereas after vitrectomy the results were disastrous. Good results were obtained if the infecting agent was Staphylococcus epidermidis. Results after Streptococcus, Staphylococcus aureus, Bacillus or Pneumococcus were bad. Of the mycotic cases, only half of the Candida cases were cured. Other mycotic infections had a worse outcome.

Anti-Bacterial Agents↗
PubMed1989

Fungal colonization of the esophagus.

A prospective study was conducted in 224 patients to determine the clinical significance of esophageal colonization with yeasts under different conditions. In accordance with the results of direct smear microscopic examination and culture of esophageal brushings, patients were divided into three groups: positive, negative, and the patients, in whom saprophytic forms were detected. A higher prevalence of positive findings was noted in patients with predisposing factors for yeast invasion than in patients free of underlying disease. Eleven percent of patients with an endoscopically normal appearing esophagus were positive. We have the impression that this situation may represent a preclinical condition of fungal esophagitis. Patients treated with H2-blocking agents showed a significantly higher incidence of positive findings, than did those without such treatment. Whether patients suffering from a refluxesophagitis resistant to long-term treatment with H2 blockers, but with a significant colonization by yeasts, could benefit by an additional treatment with antimycotics remains a controversial issue and should be studied in a controlled way.

Adult↗
PubMed1985

Bacteriological and cytological findings according to the macroscopic characteristics of the middle ear effusions.

With standardized bacteriological methods, where direct microscopic examination took a very important place, 112 effusions from children (aged 1 to 6 years) with OME (minimum 2 months duration) were examined. It was demonstrated that acridine orange stain was superior to Gram stain in detecting bacteria, while Giemsa stain gave more information about the inflammatory cells involved. Purulent OME revealed most frequently bacteria (in total 92%), as well by direct microscopic examination (83%) as by culture (83%). Bacteria were found in the direct microscopic examination of 45% of the serous and 72% of the mucoid secretions. Cultures were positive in 45% of the serous and in 32% of the mucoid effusions. In the mucoid group, the sticky glue effusions had the lowest detection rate, especially when culturing (only 21% positive cultures). Polymorphonucleocytes were present in all purulent but also in all serous effusions, and in 76% of the mucoid effusions (57% of glue effusions). Lymphocytes often accompanied polymorphonucleocytes, especially in serous (45%) and seromucoid (47%) effusions. Mono-nuclear cells and macrophages were only rarely found.

Bacteria↗
PubMed1983

[Capnocytophaga sputigena in sinusitis].

The genus Capnocytophaga was reported in the literature for the first time in 1979. Capnocytophaga are fusiform gram-negative, slowly growing bacteria that require a high pCO2. They belong to the normal buccal flora and they are reported as pathogens in infections of the periodontal region with progressive periodontitis and in septicaemia in patients with immunodeficiencies and buccal ulcerations. The present paper is the first to report Capnocytophaga sputigena as a pathogen in sinusitis. The patient presented a chronic maxillary sinusitis as a complication of a complicated tooth-extraction. The proof for pathogenicity was demonstrated by the presence of Capnocytophaga in the polymorphonucleocytes of the sinusal secretions and by the fact that the bacteria were not easily eradicated despite multiple sinusal irrigations.

Capnocytophaga↗
PubMedDate not supplied

New perspectives in the direct microscopic examination of middle ear effusions.

Detection and identification of bacteria in middle ear effusions from patients with otitis media with effusion requires sensitive bacteriologic techniques. Direct microscopic examination is very important in this respect. Three staining methods--Gram, Giemsa and the fluorescent acridine orange stain--were evaluated and compared by examining 112 middle ear effusions. Purulent effusions showed more bacteria than mucoid, and mucoid effusions showed more bacteria than serous in the direct microscopic examination of the smears. Acridine orange stain proved superior in detecting bacteria compared with Gram and Giemsa stains and distinguished dead from living bacteria. It is even more sensitive in this way than aerobic and anaerobic cultures. Giemsa stain was superior in the identification of inflammatory cells. Acridine orange and Giemsa stains are recommended in the bacteriocytologic examination of middle ear effusions; Gram stain may provide additional information.

Bacteria↗
PubMedDate not supplied

Post-traumatic endophthalmitis.

In a group of 615 cases of perforating trauma, 25 cases (4%) of proven endophthalmitis were seen. The percentage of Bacillus infections was unusually high compared to other types of endophthalmitis (3.8% for the whole group, 31% for the group with intraocular foreign bodies). Bacillus cases have a very poor outcome and in fact the overall functional results in the post-traumatic endophthalmitis group were poorer than in other categories.

Cornea↗