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| 1 | The effects of co-infection with human parvovirus B19 and Plasmodium falciparum on type and degree of anaemia in Ghanaian children显示文摘Objective:To determin the extent to which parvovirus B19(B19V)and co-infection of B19V and malaria contribute to risk of anaemia in children.Methods:B19V DNA and malaria parasites were screened for 234 children at the PMI,Children's Hospital in Accra.The role of B19V and coinfection with B19V and malaria in anaemia was evaluated by analysing full blood cell counts,malaria and B19V DNA results from these children.Results:The prevalence of B19V,malaria and co-infection with B19V and malaria was 4.7%,41.9%and 2.6%,respectively.Malaria posed a greater risk in the development of mild anaemia compared to severe anaemia(OR=5.28 vrs3.15)whereas B19V posed a higher risk in the development of severe anaemia compared to mild anaemia(OR=4.07 vrs 1.00)from a non-anaemic child.Persons with co-infection with B19V and malaria had 2.23 times the risk(95%CI=0.40-12.54)of developing severe anaemia should they already have a mild anaemia.The degree of anaemia was about three times affected by coinfection(Pillai's trace=0.551,P=0.001)as was affected by malaria alone(Pillai's trace=0.185,P=0.001).B19V alone did not significantly affect the development of anaemia in a non-anaemic child.Microcytic anaemia was associated with B19V and co-infection with B19V and malaria more than normocytic normochromic anaemia.Conclusions:B19V was associated with malaria in cases of severe anaemia.The association posed a significant risk for exacerbation of anaemia in mild anaemic children.B19V and co-infection with B19V and malaria may be associated with microcytic anaemia rather than normocytic normochromic anaemia as seen in cases of B19V infection among persons with red cell abnormalities. | Kwabena Obeng Duedu Kwamena William Coleman Sagoe Patrick Ferdinand Ayeh-Kumi Raymond Bedu Affrim Theophilus Adiku | 2013 | Asian Pacific Journal of Tropical Biomedicine2013，3，2： | 3 |
| 2 | Role of the Na^+/K^+/2Cl^- cotransporter NKCC1 in cell cycle progression in human esophageal squamous cell carcinoma显示文摘AIM:To investigate the role of Na+/K+/2Cl-cotransporter 1(NKCC1)in the regulation of genes involved in cell cycle progression and the clinicopathological significance of its expression in esophageal squamous cell carcinoma(ESCC).METHODS:An immunohistochemical analysis was performed on 68 primary tumor samples obtained from ESCC patients that underwent esophagectomy.NKCC1expression in human ESCC cell lines was analyzed by Western blotting.Knockdown experiments were conducted using NKCC1 small interfering RNA,and the effects on cell cycle progression were analyzed.The gene expression profiles of cells were analyzed by microarray analysis.RESULTS:Immunohistochemical staining showed that NKCC1 was primarily found in the cytoplasm of carcinoma cells and that its expression was related to the histological degree of differentiation of SCC.NKCC1 was highly expressed in KYSE170 cells.Depletion of NKCC1in these cells inhibited cell proliferation via G2/M phase arrest.Microarray analysis identified 2527 genes with altered expression levels in NKCC1depleted KYSE170.Pathway analysis showed that the top-ranked canonical pathway was the G2/M DNA damage checkpoint regulation pathway,which involves MAD2L1,DTL,BLM,CDC20,BRCA1,and E2F5.CONCLUSION:These results suggest that the expression of NKCC1 in ESCC may affect the G2/M checkpoint and may be related to the degree of histological differentiation of SCCs.We have provided a deeper understanding of the role of NKCC1 as a mediator and/or a biomarker in ESCC. | Atsushi Shiozaki Yoshito Nako Daisuke Ichikawa Hirotaka Konishi Shuhei Komatsu Takeshi Kubota Hitoshi Fujiwara Kazuma Okamoto Mitsuo Kishimoto Yoshinori Marunaka Eigo Otsuji | 2014 | World Journal of Gastroenterology2014，20，22： | 1 |
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