Photodynamic therapy combined with surgical management of extensive anogenital condylomatosis in a patient with systemic lupus erythematosus.

Infections with human papillomavirus in the anogenital area result in warty, papillary, and condylomatous lesions. The giant anogenital wart is relatively uncommon. Treatment of giant wart is challenging, especially in the immunosuppressive population. Here, a patient with systemic lupus erythematosis had extensive, fast-growing, recurrent anogenital condylomatosis shaped as giant cauliflowers. We reported this case and the successful treatment of photodynamic therapy combined with surgical management. It provided the feasibility for surgical ablation combined with ALA-PDT performed for these kinds of challenging cases.

Plants' use of different nitrogen forms in response to crude oil contamination.

In this study, we investigated Phragmites australis' use of different forms of nitrogen (N) and associated soil N transformations in response to petroleum contamination. 15N tracer studies indicated that the total amount of inorganic and organic N assimilated by P. australis was low in petroleum-contaminated soil, while the rates of inorganic and organic N uptake on a per-unit-biomass basis were higher in petroleum-contaminated soil than those in un-contaminated soil. The percentage of organic N in total plant-assimilated N increased with petroleum concentration. In addition, high gross N immobilization and nitrification rates relative to gross N mineralization rate might reduce inorganic-N availability to the plants. Therefore, the enhanced rate of N uptake and increased importance of organic N in plant N assimilation might be of great significance to plants growing in petroleum-contaminated soils. Our results suggest that plants might regulate N capture under petroleum contamination.

Do plants modulate biomass allocation in response to petroleum pollution?

Biomass allocation is an important plant trait that responds plastically to environmental heterogeneities. However, the effects on this trait of pollutants owing to human activities remain largely unknown. In this study, we investigated the response of biomass allocation of Phragmites australis to petroleum pollution by a ¹³CO2 pulse-labelling technique. Our data show that plant biomass significantly decreased under petroleum pollution, but the root-shoot ratio for both plant biomass and ¹³C increased with increasing petroleum concentration, suggesting that plants could increase biomass allocation to roots in petroleum-polluted soil. Furthermore, assimilated ¹³C was found to be significantly higher in soil, microbial biomass and soil respiration after soils were polluted by petroleum. These results suggested that the carbon released from roots is rapidly turned over by soil microbes under petroleum pollution. This study found that plants can modulate biomass allocation in response to petroleum pollution.

GC-MS, FT-IR analysis of black fungus polysaccharides and its inhibition against skin aging in mice.

The monosaccharide compositions, molecular weights, structure were investigated for the black fungus polysaccharides. Analysis of sugar components by gas chromatograph-mass spectrometer (GC-MS) showed that component ratios of neutral sugars in the polysaccharides were Glc:Man=82.97:12.93. Fourier transform infrared (FT-IR) analysis showed that the band at about 1649cm(-1) can indicate the presence of CO groups or CC groups vibration in structures. Pharmacological experiment showed that black fungus polysaccharides administration could significantly reduce malondialchehyche (MDA), lipofuscin (LF) contents and enhance superoxide dismutase (SOD) activities in skin. This indicated that black fungus polysaccharides may slow down skin aging.