The phosphorus fractions, the alkaline phosphatase activity (APA) and other water chemical parameters were concomitantly monitored from April 2003 to October 2004 in different ecotype sites of Lake ...Taihu. During the stages of algae growth, the phosphorus fractions and their relationships with APA in different ecotype sites were discussed and the phosphorus mineralization rate was calculated. In the water of Lake Taihu, most of the phosphorus (70.2%) could be attributed to the suspended particulate phosphorus, while the dissolved reactive phosphorus (DRP) seems to contribute less than 7%. About 58% of the total phosphorus, however, can be hydrolyzed as inorganic phosphate to compensate for phosphorus deficiency of algae and bacteria growth. During the different algae growth stages, the APA and its Kinetic parameters were varied significantly between different ecotype sites of Lake Taihu. This trend is also visible by comparing the phosphorus mineralization rate,and the most rapidly phosphorus turnover time is only several minutes. The fast recycle of phosphorus can, to some extent, be explained that the phosphorus source of algal blooms. The phytoplankton seems to compensate for phosphorus deficiency by using the alkaline phosphatase to hydrolyze phosphomonoesters.
Coexistence of chronic lymphocytic leukemia （CLL） and essential thrombocythemia （ET） in a patient is extremely rare, with only 10 cases reported thus far in literature. This paper describes a ...94-year-old male having atypical B-CLL with CD5- （CD5-） phenotype and ET. In this patient, we performed interphase fluorescence in situ hybridization （FISH） analysis which revealed 13q14.3 deletion in 31% of B-lymphocyte nuclei and RB1 deletion in 27% of B-lymphocyte nuclei, but not in neutrophils and T-lymphocytes. Furthermore, we identified JAK2 V617F mutation in the peripheral blood nucleated cells and neutrophils, but not in the B- and T-lymphocyte populations. Therefore, it was concluded that the occurrence of CD5- B-CLL and ET in this patient was pathogenically independent.
Previous studies suggested that smoking and passive smoking could increase the risk of breast cancer, but the results were inconsistent, especial y for Chinese females. Thus, we systematical y ...searched cohort and case-control studies investigating the associations of active and passive smoking with breast cancer risk among Chinese females in four English databases （PubMed, Embase, ScienceDirect, and Wiley） and three Chinese databases （CNKI, WanFang, and VIP）. Fifty-one articles （3 cohort studies and 48 case-control studies） covering 17 provinces of China were finally included in this systematic review. Among Chinese females, there was significant association between passive smoking and this risk of breast cancer odds ratio （OR）： 1.62; 95% confidence interval （CI）： 1.39-1.85; I2 = 75.8%, P 〈 0.001; n = 26 but no significant association between active smoking and the risk of breast cancer （OR：1.04;95%CI：0.89-1.20;I2=13.9%, P=0.248;n=31）. The OR of exposure to husband’s smoking and to smoke in the workplace was 1.27 （95% CI： 1.07-1.50） and 1.66 （95% CI： 1.07-2.59）, respectively. The OR of light and heavy passive smoking was 1.11 and 1.41, respectively, for women exposed to their husband’s smoke （〈20 and≥20 cigarettes per day）, and 1.07 and 1.87, respectively, for those exposed to smoke in the workplace （〈300 and≥300 min of exposure per day）. These results imply that passive smoking is associated with an increased risk of breast cancer, and the risk seems to increase as the level of passive exposure to smoke increases among Chinese females. Women with passive exposure to smoke in the workplace have a higher risk of breast cancer than those exposed to their husband’s smoking.
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