60 research outputs found

    A FRAMEWORK OF ADAPTED TRAVEL REFERENCES IN ONLINE SOCIAL MEDIA

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    Location information collected from mobile users, knowingly and unknowingly, can reveal not only a user’s latitude and longitude. In this paper, we study approximate k nearest neighbor queries where the mobile user queries the area based company about approximate k nearest sights according to his current location. To judge the security within our solutions, we define a crook model internet hosting in queries. The security analysis has shown our solutions ensures both location privacy meaning the client does not reveal any longer understanding about his place for that LBS provider and query privacy meaning the client does not reveal what type of POIs he's interested in the LBS provider. We're feeling the mobile user can purchase his location from satellites anonymously, coupled with base station coupled with LBS provider don't collude to comprise the customer location privacy or susceptible to anonymous funnel. RSA is not a probabilistic file encryption plan. To alter RSA acquiring a probabilistic file encryption plan, we must be adding random bits for your message m before encrypting m with RSA. The goal of transporting this out must be to ensure the mobile user can buy only one in POIs per query. In addition, once the mobile user can buy a string of encrypted k nearest POIs inside the response within the LBS server, they may frequently run the RR formula simply when using the LBS server to get a sequence of k nearest POIs without passion for query generation and response generation. Performance has shown our fundamental protocol performs much well compared to present PIR based LBS query protocols with regards to both parallel computation and communication overhead

    Silibinin-mediated metabolic reprogramming attenuates pancreatic cancer-induced cachexia and tumor growth.

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    Pancreatic ductal adenocarcinoma (PDAC) is the fourth leading cause of cancer-related deaths in the US. Cancer-associated cachexia is present in up to 80% of PDAC patients and is associated with aggressive disease and poor prognosis. In the present studies we evaluated an anti-cancer natural product silibinin for its effectiveness in targeting pancreatic cancer aggressiveness and the cachectic properties of pancreatic cancer cells and tumors. Our results demonstrate that silibinin inhibits pancreatic cancer cell growth in a dose-dependent manner and reduces glycolytic activity of cancer cells. Our LC-MS/MS based metabolomics data demonstrates that silibinin treatment induces global metabolic reprogramming in pancreatic cancer cells. Silibinin treatment diminishes c-MYC expression, a key regulator of cancer metabolism. Furthermore, we observed reduced STAT3 signaling in silibinin-treated cancer cells. Overexpression of constitutively active STAT3 was sufficient to substantially revert the silibinin-induced downregulation of c-MYC and the metabolic phenotype. Our in vivo investigations demonstrate that silibinin reduces tumor growth and proliferation in an orthotopic mouse model of pancreatic cancer and prevents the loss of body weight and muscle. It also improves physical activity including grip strength and latency to fall in tumor-bearing mice. In conclusion, silibinin-induced metabolic reprogramming diminishes cell growth and cachectic properties of pancreatic cancer cells and animal models

    The odyssey of pacritinib in myelofibrosis

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    Myelofibrosis (MF) can present with symptomatic splenomegaly and/or cytopenias including thrombocytopenia. Disease-related thrombocytopenia is a poor prognostic factor with a median overall survival of less than 2 years. Currently approved JAK1/2 inhibitors have not been evaluated in patients with platelets <= 50 x 109/L and in fact could potentiate thrombocytopenia because of their combined JAK1/2 inhibitory activity. Pacritinib (PAC), a selective JAK2, fms-like tyrosine kinase 3, interleukin-1 receptor-associated kinase 1 multikinase inhibitor was developed to meet this unmet need. PAC was evaluated in 2 randomized phase 3 trials in the frontline setting (PERSIST-1, PAC 400 mg daily vs best available therapy) and second-line setting in patients with MF with platelets <= 100 x 10(9)/L (PERSIST-2, PAC 400 mg daily or 200 mg twice daily vs best available therapy). PERSIST-1 met its primary end point; however, the development of PAC hit a brief pause because of a US Food and Drug Administration-mandated clinical hold for excess of bleeding and cardiac events in the PAC 400 mg daily arm in the PERSIST-1 study. Although the PERSIST-2 study was terminated abruptly because of this clinical hold, it met its splenic response end point and demonstrated a trend toward symptom improvement. Subsequent, diligent review of the PERSIST-1 and PERSIST-2 studies did not confirm an excess of severe bleeding or cardiac events on the PAC arm. Additionally, the dose finding PAC203 study endorsed the safety and efficacy of 200 mg twice daily, leading to the approval of PAC for the treatment of patients with MF with platelets <= 50 x 10(9)/L
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