Candida glabrata is the second or third most frequent cause of candidaemia. The gastrointestinal tract is considered to be a major portal of entry for systemic candidiasis, but relatively few studies have investigated the pathogenesis of C. glabrata. Experiments were designed to clarify the ability of C. glabrata to disseminate from the mouse intestinal tract. Following oral inoculation, C. glabrata readily colonized the caeca [approx. 107 cells (g caecum)-1] of antibiotic-treated mice, but extraintestinal dissemination was not detected. Superimposing several mouse models of trauma and/or immunosuppression known to induce dissemination of Candida albicans and other intestinal microbes did not cause C. glabrata to disseminate often, although one exception was mice given high doses of dexamethasone for 4 days. These data support the hypothesis that the antibiotic-treated mouse intestine may be an epidemiological reservoir for C. glabrata and that this yeast tends to disseminate under specific clinical conditions.
Bibliographical noteFunding Information:
1Dipartimento ambiente e connessa prevenzione primaria, Istituto superiore di sanità, Roma 2Consiglio nazionale delle ricerche, Istituto di fisiologia clinica, Sezione di epidemiologia, Pisa 3Ufficio di statistica, CNESPS, Istituto superiore di sanità, Roma 4Dipartimento di epidemiologia del Servizio sanitario regionale, Regione Lazio 5World Health Organization Regional Office for Europe, Rome, Italy 6Dipartimento biologia e biotecnologie Charles Darwin, Sapienza Università di Roma