[Study on recovery and its influencing factors of ferulic acid and tetramethylpyrazine in cerebral microdialysis probe].

To establish a method for detecting microdialysis recovery of tetramethylpyrazine (TMP) and ferulic acid (FA) and investigating the influencing factors, providing the basis for further in vivo microdialysis experiments. The concentration of FA and TMP in dialysates were determined by high pressure liquid chromatography ( HPLC) and probe recovery were calculated respectively. The influence of the flow rates, medium concentration, temperature and in vivo probe stability on the recovery of FA and TMP were investigated by using concentration difference method (incremental method and decrement method).

Survival impact of cervical metastasis in squamous cell carcinoma of hard palate.

Objective: Evaluate the impact of cervical metastasis on the survival of patients with squamous cell carcinoma (SCC) of the hard palate.

Methods: 155 cases of SCC of the hard palate hospitalized in Cancer Center, Sun Yat-sen University, from 1964 to 2008 were reviewed retrospectively.

Results: The 5-year DSS rates for N+ and N0 patients were 21.

Expression and clinical significance of SIAH in laryngeal squamous cell carcinoma.

SIAH is widely expressed in lot of kinds of tumors. It plays a significant role in human cancer, but its clinicopathologic and prognostic significance in laryngeal squamous cell carcinoma (LSCC) has not yet been elucidated. The SIAH expression was examined at mRNA and protein levels by real-time quantitative polymerase chain reaction (RT-PCR), Western blotting, and immunohistochemistry in LSCC tissues and adjacent normal larynx tissues.