Changes in the composition of phosphorus (P) compound groups in sediment and P in sediment pore water in a shallow eutrophic lake: a <Superscript>31</Superscript>P NMR study

We observed phosphorus (P) compound groups in sediment in Lake Kasumigaura in winter (February and March) and summer (July and August) to identify how their composition differs between the seasons. The concentration of soluble unreactive P in sediment pore water (SUP_pore) was significantly higher in winter than in summer, whereas the concentration of soluble reactive P (SRP_pore) was significantly higher in summer than in winter. In summer, when the concentration of SRP_pore was high, the concentration of orthophosphate was greatest (~80 %) among the P compound groups. The concentration of orthophosphate diesters had a significant negative correlation with SUP_pore concentration and was significantly lower in winter (high SUP_pore concentration) than in summer. Such relative abundance of P compound groups in sediment could have resulted from adsorption of orthophosphate in summer and degradation of orthophosphate diesters in winter; these seasonal processes could contribute significantly to the changes in the concentrations of SRP_pore and SUP_pore, possibly influencing the P concentrations in the water column in Lake Kasumigaura.     

Pulmonary aspergillosis due toAspergillus terreus combined with staphylococcal pneumonia and hepatic candidiasis

A female patient with systemic lupus erythematosus (SLE) developed pulmonary aspergillosis with staphylococcal pneumonia and hepatic candidiasis.Aspergillus terreus, which is a rare causative organism of pulmonary aspergilosis, was identified from a pulmonary lesion by culture. The aleurioconidium production, a characeristic of the genusAspergillus sect.terrei, was demonstrated on short and irregular hyphal features in tissue sections. This report is the first of a combined case of pulmonary aspergillosis due toA. terreus with infections caused by other microorganisms.