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PCBs (polychlorinated biphenyls) were determined in sediment/soil profiles to a depth of 30 cm from three different wetlands (i.e., ditch wetlands, riparian wetlands and reclaimed wetlands) of the Pearl River Estuary to elucidate their levels, distribution and toxic risks along a 100-year chronosequence of reclamation. All detected PCB congeners and the(More)
Corneal graft rejection is the major cause of corneal failures. Previous studies have shown that the CD25 monoclonal antibody can inhibit corneal graft rejection during the acute phase of rejection in rat models. In the current study, we evaluated the safety and efficacy of the topical Entranster™ vector in rat corneal applications and further investigated(More)
Indoor and outdoor seedling emergence experiments were conducted to thoroughly investigate germination patterns as affected by reclamation and urbanization, the ecological characteristics of soil seed banks, and their relationships with environmental factors in both urbanized and reclaimed regions of the Pearl River Delta in coastal wetlands. The(More)
The purpose of this study was to investigate the antitumor effects and mechanism of the selenium heteropoly compound (NH₄)₄H₄[Se₂Mo₂V₄O₂₄]·7H₂O (SeMoV) in K562 cells. The results showed that 0.313-10 mg/l SeMoV significantly inhibited the proliferation of K562 cells in vitro in a time- and concentration-dependent manner as determined by a micro-culture(More)
The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) were determined in the soils from industrial, wharf, cropland, milldam and natural wetland sites to characterize their distributions, toxic levels and possible sources in the Pearl River Estuary and identify their relationships with soil organic matter (SOM) and water-stable aggregates (WSAs).(More)
Surface soils (0–20 cm) were collected at five sampling sites along a 250-m sampling zone perpendicular to a tidal creek in the T. chinensis wetland of the Yellow River Delta of China in June, August and November of 2007 and April of 2008. Soils were assessed for the spatial and temporal distributions of metals (As, Ni, Cr, Zn, Pb, Cd and Cu) and the(More)
To investigate the spatial and seasonal variations of soil organic carbon (SOC) and total nitrogen (TN) contents and stocks in tidal salt marsh soils, 15 cores to a depth of 40 cm were collected in five sampling sites along a sampling belt during three seasons. Our results showed that higher SOC and TN contents occurred in the surface soils in three(More)
The effect of reclamation on heavy metal concentrations and the ecological risks in ditch wetlands (DWs) and riparian wetlands (RWs) across a 100-year chronosequence in the Pearl River Estuary of China was investigated. Concentrations of 4 heavy metals (Cd, Cu, Pb, and Zn) in soil and plant samples, and sequential extracts of soil samples were determined,(More)