Tuesday, October 16, 2012

Oncogenic Role of Skp2 and p27Kip1 in Intraductal Proliferative Lesions of the Breast.




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Oncogenic Role of Skp2 and p27Kip1 in Intraductal Proliferative Lesions of the Breast.



Chin Med Sci J. 2012 Oct; 27(3): 161-6
Yan L, Yun N, Xiu-Min D, Xu-Qi X

To investigate whether the connection of p27(Kip1) to S-phase kinase-associated protein 2 (Skp2) plays an oncogenic role in intraductal proliferative lesions of the breast. Methods Here we investigated the mechanism involved in association of Skp2’s degradation of p27(Kip1) with the breast carcinogenesis by immunohistochemical method through detection of Skp2 and p27(Kip1) protein levels in 120 paraffin-embedded tissues of intraductal proliferative lesions including usual ductal hyperplasia (UDH, n=30), atypical ductal hyperplasia (n=30), flat epithelial atypia (FEA, n=30), and ductal carcinoma in situ (DCIS, n=30).Moreover, the expression status of Skp2 and p27(Kip1) in 30 cases of the normal breast paraffin-embedded tissues were explored. Results The DCIS group was with the highest Skp2 level and the lowest p27(Kip1) level, and the UDH group was with the lowest Skp2 level and the highest p27(Kip1) level.Both Skp2 and p27(Kip1) levels in the DCIS group were significantly different from those in the UDH group (all P<0.01).The levels of Skp2 and p27(Kip1) in the FEA group were significantly different from both the DCIS and UDH groups (all P<0.05).p27(Kip1) was negatively correlated with Skp2 in both the UDH group (r=-0.629, P=0.026) and DCIS group (r=-0.893, P=0.000). Conclusion Overexpression of Skp2 might be the mechanism underlying p27(Kip1) over degradation.








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A health system approach to all-hazards disaster management: A systematic review.



PLoS Curr. 2012; 4: e50081cad5861d
Bayntun C

AIM This review aims to develop disaster management practice using a health system strengthening approach through two objectives. Firstly, to review the disaster management literature to test the hypothesis that a holistic health system approach has not been established in practice or evaluated in the core literature. Secondly, to collate the worldwide experience of disaster management found in the core literature according to the components of a health system. METHOD A systematic review was conducted of the core literature published between January 2000 and November 2011 on the MEDLINE and Embase databases. Search terms combined the WHO's descriptors for a health system with disaster terms. Non-restrictive inclusion criteria were applied. Papers were assessed using a quality appraisal tool. Content analysis identified the disaster management components discussed within the context of the health system. RESULTS The search yielded 143 relevant disaster management documents for collation. The review found that none of these publications described a holistic health system approach to disaster management, and none evaluated such an approach. CONCLUSION The findings of this review demonstrate that a holistic health system approach to disaster management has not been established in practice or evaluated in the core literature. Important lessons identified through the collation and analyses of isolated disaster-related experience require further research to incorporate them within a holistic health system approach. This approach, supported by the resolution passed at the World Health Assembly in 2011, aims to build health system resilience to protect immediate and long-term population health in the face of all-hazards disasters. Citation: Bayntun C. A health system approach to all-hazards disaster management: A systematic review. PLOS Currents Disasters. 2012 Aug 22. doi: 10.1371/50081cad5861d.







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