RESUMO
Aim To investigated the effect of p-CA on depression-like behaviors of mice of olfactory bulbectomy and its possible mechanism. Methods The olfactory bulbectomy (OBX) model of mice was established by an operation of olfactory bulbectomy. The behaviors of the mice were detected by the forced swimming test and the tail suspension test. Results The depression-like behavior in the forced swimming and tail suspension test and the in the open field test significantly increased in OBX mice; however, p-CA improved the depres- sion-like behavior in the forced swimming and tail sus pension test and the hyper-locomotor activity in open field test in OBX mice. Moreover, treatment with AMPA receptor antagonist NBQX blocked this improving effect of p-CA. While, treatment with AMPA receptor agonist CX546 enhanced this improving effect of p-CA. Conclusions P-CA improves depression-like behaviors of OBX mice, and AMPA receptors may mediate this effect.
RESUMO
<p><b>OBJECTIVE</b>To evaluate the bone-implant interfaces of two kinds of implants with different surfaces in different time in vivo.</p><p><b>METHODS</b>CDIC and ITI-TPS solid-screw cylinder pure titanium implants were selected and implanted in the regions of posterior molars of rhesus monkeys. 1 month, 2 months, 3 months and 1 year after surgery, the bone-implant interfaces were evaluated respectively through oral examination, X-ray inspection, light microscope and scanning electron microscope (SEM) observation.</p><p><b>RESULTS</b>None of the implants was loose. Soft tissue around implants appeared no inflammation. There were no apparent transparent shadow around the implants interfaces in X-ray photos except little angle-shaped absorption was showed in neck region of CDIC implants of one-month. New bone was observed around implants of one-month through light microscope and SEM. More bone growing around ITI implants were seen than that around CDIC implants except the interfaces of one-year.</p><p><b>CONCLUSION</b>The osseointegration of ITI implants are better than that of CDIC implants during three months after implanting without loading. The bone formation at the interfaces of ITI and CDIC implants has no significant difference after one year without loading.</p>