Health Effects of Stachybotrys Chartarum – Hematological Issues



This page discusses medical journal articles discussing hematological issues associated with Stachybotrys exposures.

The Health Effects of Stachybotrys Chartarum page of the Paradigm Change site provides further information on the effects of this toxic mold.


Piecková E, Hurbánková M, Cerná S, Kiskova A, Kovacikova Z, Kollankova Z, Wimmerova S. Inflammatory and haematotoxic potential of indoor Stachybotrys chartarum (Ehrenb.) Hughes metabolites. Arhiv za higijenu rada i toksikologiju. 2009;60:401–409. PMID: 20061240

Complex secondary metabolites of Stachybotrys isolates from mouldy dwellings/public buildings in Slovakia were intratracheally instilled in Wistar male rats. Exometabolites proved to suppress red blood cell (RBC), decreasing the total RBC count, haemoglobin, and haematocrit. The exposed rats showed significantly higher total BALF cell count, indicating inflammation, lower alveolar macrophage counts, and increased granulocyte count related to the BALF cells.


Vesper SJ, Magnuson ML, Dearborn DG, Yike I, Haugland RA. Initial characterization of the hemolysin stachylysin from Stachybotrys chartarum. Infection and immunity. 2001;69:912–916. PMID: 11159985

Stachybotrys chartarum is a toxigenic fungus that has been associated with human health concerns, including pulmonary hemorrhage and hemosiderosis. This fungus produces a hemolysin, stachylysin. Purified stachylysin required more than 6 h to begin lysing sheep erythrocytes, but by 48 h, lysis was complete. Stachylysin also formed pores in sheep erythrocyte membranes.


Vesper SJ, Dearborn DG, Yike I, Sorenson WG, Haugland RA. Hemolysis, toxicity, and randomly amplified polymorphic DNA analysis of Stachybotrys chartarum strains. Applied and environmental microbiology. 1999;65:3175–3181. PMID: 10388719

In this study, 16 strains of S. chartarum isolated from case (n = 8) or control (n = 8) homes in Cleveland and 12 non-Cleveland strains from diverse geographic locations were analyzed for hemolytic activity, conidial toxicity, and randomly amplified polymorphic DNA banding patterns. Only 3 of the 28 strains examined both were consistently hemolytic and produced highly toxic conidia. Each of these strains was isolated from a house in Cleveland where an infant had idiopathic pulmonary hemorrhage.


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