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A novel micro-extraction procedure was developed through the use of an electrospun polymer nanofiber as a solid-phase extraction (SPE) sorbent to directly extract trazodone from human plasma. The target compound was then monitored by a high performance liquid chromatography with ultraviolet detector (HPLC-UV) system. Parameters of influencing the extraction efficiency, such as fiber diameter, fiber...
Mutation in the TSC2 tumor suppressor causes tuberous sclerosis complex, a disease characterized by hamartoma formation in multiple tissues. TSC2 inhibits cell growth by acting as a GTPase-activating protein toward Rheb, thereby inhibiting mTOR, a central controller of cell growth. Here, we show that Wnt activates mTOR via inhibiting GSK3 without involving β-catenin-dependent transcription. GSK3 inhibits...
Tissue-specific expression of parental K-ras allele(s) was investigated by single-strand conformation polymorphism analysis of the 3′ untranslated region of the K-ras gene in normal lung, spleen, liver and kidney from (A/J×TSG-p53) F 1 mice. The expression of A/J K-ras allele was equal to that of C57BL/6J allele in normal spleen, liver and kidney. However, transcripts from A/J K-ras allele...
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