Symoens Françoise, Knoop Christiane, Schrooyen Marc, Denis Olivier, Estenne Marc, Nolard Nicole, Jacobs Frédérique
Mycology Section, Scientific Institute of Public Health, Brussels, Belgium.
J Heart Lung Transplant. 2006 May;25(5):603-7. doi: 10.1016/j.healun.2005.12.011. Epub 2006 Mar 23.
Scedosporium apiospermum is a saprophytic ubiquitous filamentous fungus. It can cause a wide spectrum of diseases, from localized to invasive infections. S apiospermum has been described as one of the major fungal agents of chronic colonization of airways in cystic fibrosis (CF) patients. Invasive infections due to S apiospermum are only rarely reported in CF after lung transplantation. A 26-year-old woman with CF and chronic bronchial colonization by S apiospermum developed bilateral chorioretinitis and subcutaneous nodules 4 weeks after double-lung transplantation (LTx). Isolates of S apiospermum from sputum samples before and after LTx and from vitreal fluid were typed by random amplification of polymorphic DNA (RAPD). The patient was treated with voriconazole (VRC). The patient improved with VRC given orally for 6 months. Two days after VRC discontinuation, she developed sub-acute meningitis (isolation of S apiospermum from the cerebrospinal fluid). She was again given VRC, but died 23 days later from uncontrolled fungal infection. Molecular typing of clinical isolates of S apiospermum performed by RAPD demonstrated that all isolates belonged to the same genotype. S apiospermum is a frequent, but late colonizing fungal agent in CF patients. In the case of LTx, these patients can develop invasive infection due to the colonizing strain, as confirmed by molecular typing.
伪阿利什霉是一种普遍存在的腐生丝状真菌。它可引起从局部感染到侵袭性感染的广泛疾病。伪阿利什霉已被描述为囊性纤维化(CF)患者气道慢性定植的主要真菌病原体之一。肺移植后CF患者中,由伪阿利什霉引起的侵袭性感染报道极少。一名26岁患有CF且气道被伪阿利什霉慢性定植的女性,在双肺移植(LTx)后4周出现双侧脉络膜视网膜炎和皮下结节。通过随机扩增多态性DNA(RAPD)对LTx前后痰标本及玻璃体液中的伪阿利什霉分离株进行分型。患者接受伏立康唑(VRC)治疗。口服VRC 6个月后患者病情改善。停用VRC两天后,她发生了亚急性脑膜炎(脑脊液中分离出伪阿利什霉)。她再次接受VRC治疗,但23天后死于无法控制的真菌感染。通过RAPD对伪阿利什霉临床分离株进行分子分型表明,所有分离株属于同一基因型。伪阿利什霉是CF患者中常见但定植较晚的真菌病原体。在LTx情况下,这些患者可因定植菌株发生侵袭性感染,分子分型已证实这一点。