LncRNA IGFL2-AS1 functions as a ceRNA in regulating ARPP19 through competitive binding to miR-802 in gastric cancer.

Gastric cancer (GC) is one of the most common malignancies of the digestive system worldwide. Multiple long noncoding RNAs (lncRNAs) participate in the regulation of GC development and metastasis. In this study, we aimed to elucidate the expression and function of lncRNA IGFL2-AS1 in GC. We found that IGFL2-AS1 was highly expressed in GC tissues and cell lines. Knockdown of IGFL2-AS1 suppressed GC cell proliferation, migration, and invasion in vitro. Furthermore, we identified that IGFL2-AS1 exerted its function as a molecular sponge of miR-802. MiR-802 was demonstrated to be a tumor suppressor, and overexpression of miR-802 suppressed GC cell growth, migration, and invasion. Mechanistically, we revealed that the cAMP-regulated phosphoprotein 19 (ARPP19) was a direct target of miR-802 and could reverse the inhibitory function of miR-802. Moreover, our results confirmed that knockdown of IGFL2-AS1 inhibited GC tumor development in an in vivo GC tumor xenograft model. In summary, our data suggest that the IGFL2-AS1/miR-802/ARPP19 axis plays a critical role in the progression and metastasis of GC. Therapies targeting the IGFL2-AS1/miR-802/ARPP19 axis can potentially improve GC treatment.

[Clinical efficacy of pishen bingbu recipe in patients with sympathetic cervical spondylosis and its impact on heart rate variability].

OBJECTIVE: To investigate the clinical effect of Pishen Bingbu Recipe (PBR) in treating patients with sympathetic cervical spondylosis (SCS) of qi-blood deficient syndrome type and its impact on heart rate variability (HRV). METHODS: Fifty patients were randomized into the control group and the treatment group equally. Both were treated with mecobalamin, vitamin B1, neurotropin, and occipital - jaw band traction in the sitting posture, but to patients in the treatment group, PBR was given additionally. The course of treatment was 60 days. Therapeutic effect and changes of HRV indexes were observed. RESULTS: After treatment, in the treatment group, 5 patients (20%) were clinically cured, treatment was markedly effective in 12 patients (48%), effective in 7 (28%) and ineffective in 1 (4%), while the corresponding data in the control group were 2 (8%), 4 (16%), 18 (72%) and 1 (4%) respectively, demonstrating the efficacy in the treatment group was superior to that in the control group (P <0.05). Before treatment, the HRV indexes in the two groups were insignificantly different respectively (P >0.05). But after treatment, difference between groups was observed in terms of either time domain or frequency domain. Those of time domain were: standard deviation of NN intervals (SDNN, ms) 133.41 +/- 8.61 vs 115.61 +/- 13.49, average standard deviation of 5 min NN intervals (SDANN, ms) 126.90 +/- 9.99 vs 106.20 +/- 8.84, HRV trigonometric index (HRVTI) 35.10 +/- 4.48 vs 25.51 +/- 2.24; and those of frequency domain: low frequency (LF, ms2) 379.90 +/- 159.07 vs 477.70 +/- 396.91 high frequency (HF, ms2) 157.10 +/- 28.18 vs 122.10 +/- 101.90, and LF/HF ratio 2.37 +/- 0.52 vs 4.27 +/- 2.84. All were superior in the treatment group (P < 0.05). CONCLUSION: PBR shows evidently clinical efficacy on SCS, it can significantly improve the functional activities of sympathetic nerve in patients.