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Articles by Jian Pan
Total Records ( 3 ) for Jian Pan
  Zhuomin Wang , Bo Han , Zhuang Zhang , Jian Pan and Hui Xia
  Analysis of gene expression using RNA from the paraffin-embedded tissues is becoming an important way to study cancer pathogenesis. In this article, total RNA was extracted from tissue of 158 cases of paraffin-embedded tongue cancer, and expression of angiopoietin-like 4, tenascin-C and cathepsin-C were detected by real-time reverse transcriptase-polymerase chain reaction (RT-PCR). Our results demonstrated that high expression level of angiopoietin-like 4 or tenascin-C was predictive of poor prognosis of tongue cancer patients (p=0.024 and p=0.011, respectively), especially when expression levels of both genes were concomitantly high (p=0.001). Additionally, high expression of angiopoietin-like 4 and tenascin-C, or concomitant high expression of angiopoietin-like 4 and tenascin-C were independent prognostic factors of poor survival in patients with tongue cancer. These results suggest that the improved method of RNA extraction is suitable for analysing gene expression of paraffin-embedded solid tumours. Angiopoietin-like 4 and tenascin-C, especially the combination of angiopoietin-like 4 and tenascin-C, are useful for predicting the prognosis of the patients with tongue cancer, independent of lymph node metastasis status.
  Chuanxun Yuan , Jian Pan and Xueqiao Hu
  A new compound decomposed from ginkgolide B(GB) is discovered and identified by MS and UV spectrum. It is the dehydrate of GB, which was named as ginkgolide K before. Differently, it cannot exist independently, but only in equilibrium with GB. It is found first time that 3-hydroxy is active in some solvent.
  Xiuheng Xue , Jian Pan , Huiming Xie , Juhua Wang and Shuang Zhang
  The aim of this paper was to demonstrate a fluorescence measurement method for rapid detection of two bacterial count by using water-soluble quantum dots (QDs) as a fluorescence marker, and spectrofluorometer acted as detection apparatus, while Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) were as detection target bacteria. Highly luminescent water-soluble CdSe QDs were first prepared by using thioglycolic acid (TGA) as a ligand, and were then covalently coupled with target bacteria. The bacterial cell images were obtained using fluorescence microscopy. Our results showed that CdSe QDs prepared in water phase were highly luminescent, stable, and successfully conjugated with E. coli and S. aureus. The fluorescence method could detect 102–107CFU/mL total count of E. coli and S. aureus in 1–2h and the low detection limit is 102CFU/mL. A linear relationship of the fluorescence peak intensity and log total count of E. coli and S. aureus have been established using the equation Y=118.68X−141.75 (r=0.9907).
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