Retinal microstructure and developmental characteristics in Zebrafish / 解剖学报

Objective To study the microscopic structure and morphological characteristics of Zebrafish eyeball and retina at different developmental stages, and to lay a foundation for visual research model. Methods Select eight groups of zebrafish at different ages, with six fish in each group, 48 fish in total. Optical microscopy and transmission electron microscopy were used to observe the eyeball structure of Zebrafish at different developmental stages, and the thickness of retinal each layer was measured to analyze the temporal and spatial development pattern. The morphological characteristics of various cells in the retina and the way of nerve connection were observed from the microscopic and ultrastructural aspects, especially the structural differences between rod cells and cone cells. Results The retina of Zebrafish can be divided into ten layers including retinal pigment epithelial layer, rod cells and cone cells layer, outer limiting membrane, outer nuclear layer, outer plexiform layer, inner nuclear layer, inner plexiform layer, ganglion cell layer, nerve fiber layer, inner limiting membrane. Rod cells had a smaller nucleus and a higher electron density than cone cells. Photoreceptor terminals were neatly arranged in the outer plexiform layer, forming neural connections with horizontal cells and bipolar cells, and several synaptic ribbons are clearly visible within them. In Zebrafish retina, ganglion cell layer and inner plexiform layer are the earliest developed. With the growth and development of Zebrafish, the thickness of rod cells and cone cells layer and retinal pigment epithelial layer gradually increases, and the retinal structure was basically developed in about 10 weeks. Conclusion The retinal structure of Zebrafish is typical, with obvious stratification and highly differentiated nerve cells. There are abundant neural connections in the outer plexiform layer. The ocular development characteristics of Zebrafish are similar to those of most mammals.

Stability and taste evaluation of two kinds of oral solvent after extemporaneous compounding / 药学学报

A flavoring agent and a suspension agent were prepared for extemporaneous compounding. The stability of the two agents before and after drug loading was investigated, and the taste of the suspension after extemporaneous compounding was evaluated by electronic tongue technology. The two agents remained stable under the conditions of influence factor test, accelerated test and long-term test. The appearance properties of the two agents did not change. The relative density of the flavoring agent was maintained at 1.053-1.075, and the pH was stable at 4.2-4.5. The relative density of the suspension agent was maintained at 0.999-1.022, and the pH was stable at 4.0-4.5. Seven kinds of drugs, including warfarin sodium tablets and spironolactone tablets, were mixed with these two oral solvents, and the content uniformity and stability were detected respectively. The results showed that the preparations could be evenly dispersed and the physical and chemical properties were stable. The results of taste evaluation showed that in captopril group and chloral hydrate group, the flavoring agent had the best effect on taste correction. In warfarin sodium group, rifampicin group, spironolactone group, vitamin B1 group and vitamin B2 group, the blending agents had the best effect on taste correction.

Imaging and histological changes of the healing process of experimental sheep femoral fracture using different fixation methods / 中国组织工程研究

BACKGROUND: Microwave treatment is a common physical therapy method that can increase the temperature and blood circulation of deep tissues, and is used for improving fracture repair. However, microwave treatment cannot be used if there is surgically implanted metal plate or screw. OBJECTIVE: To observe the dame of microwave treatment to the tissues surrounding the titanium alloy implants. METHODS: Forty-four New Zealand white rabbits were randomized into experimental and control groups. The model of the fracture at the middle of the femur was established in all rabbits, and the rabbits in the experimental group were implanted with titanium alloy internal fixation systems. A 30-day microwave treatment (2 450 MHz, 20 W or 40 W, 20 minutes daily) was applied to the fracture site in all rabbits at 3 days after operation. RESULTS AND CONCLUSION: After 20 W of wave microwave treatment, the temperature of tissues around the implants showed no significant increase or severe heat injury. While, 40 W of wave microwave treatment significantly increased the temperature of tissues around the implants and the tissue was damaged severely. Our results indicate that, the low-dosage microwave treatment may be a promising method in the rehabilitation therapy of fractures with titanium alloy internal fixation.

The protecting effects of matrine on chemotherapy related hepatic lesion,a retrospective clinical analysis / 中国基层医药

Objective To evaluate the protecting effects of matrine on chemotherapy related hepatic lesion and its possible mechanism.Methods The positive rate and severity of hepatic lesion were compared between pa- tients being treated with or without matrine during chemotherapy processes.Furthermore,the difference of liver pro- tecting effect of this Chinese medicine between hepatitis B virus(HBV)infection chemotherapy patients and disinfec- tion patients were also analyzed.Results Both the rate of hepatic lesion and level of ALT in matrine treated group were much lower than those in untreated group in chemotherapy patients.The rate of hepatic lesion and level of ALT in HBV infection patients were higher than those in HBV disinfection patients in untreated group,while the signifi- cant difference of these two parameters between HBV infection patients and disinfection patients were disappeared in matrine treated group.Conclusion Matrine has hepatic protecting effect in chemotherapy related liver lesion.

Efficacy of concurrent radio-chemotherapy and chemotherapy alone in the treatment of locally advanced non-small-cell lung cancer / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To evaluate the effect and acute toxicity of concurrent radio-chemotherapy, by NVB and DDP, plus concurrent radiotherapy in comparison with chemotherapy alone in the treatment of inoperable locally advanced non-small-cell lung cancer (LANSCLC).</p><p><b>METHODS</b>Sixty-four patients with inoperable LANSCLC were randomly divided by envelope method into two groups: concurrent radio-chemotherapy group (n = 33) and conventional chemotherapy group (n = 31). The patients in conventional chemotherapy group were treated by NP regimen (NVB + DDP): NVB 25 mg/m(2), d1, 8 and DDP 25-30 mg/m(2) d1-3. In the radio-chemotherapy group by NP regimen plus conventional radiotherapy by (60)Co: 64-68 Gy/2 Gy x 5/w x 6-7w.</p><p><b>RESULTS</b>All patients completed the treatment schedule. The overall response rate (CR + PR) in the radio-chemotherapy group was significantly higher than that in the conventional chemotherapy group: 81.8% vs 45.2%, (P < 0.01) with 1- and 2-year survival rates of 69.7% vs 38.7% (P < 0.05) and 39.4% vs 16.1% (P < 0.05). without any significant difference in the acute toxicity between two groups (P > 0.05).</p><p><b>CONCLUSION</b>Compared with conventional chemotherapy (NVP and DDP), concurrent radio-chemotherapy (NVP and DDP plus concurrent radiotherapy) is more effective and tolerable for the inoperable locally advanced non-small-cell lung cancer.</p>

The preparation and the in vitro release of OANO-1 microspheres / 中国中药杂志

<p><b>OBJECTIVE</b>To prepare OANO-1 microspheres and test their release in vitro.</p><p><b>METHOD</b>OANO-1 microspheres were made by W/O/W-liquid drying process. The surface morphology of the microspheres was observed by SEM. The mean diameter and the size distribution of microspheres, the drug loading and the incorporation efficiency were examined. The release of OANO-1 microspheres in vitro was examined by small cup method. The accumulated release percent of OANO-1 microspheres was examined.</p><p><b>RESULT</b>The OANO-1 microspheres were regular in their morphology. The average particle size was 8.59 microm with over 90% of the microspheres being in the range of 1-12 microm. The drug loading and the incorporation efficiency were 48.39% and 19.32% respectively. The accumulated release percent of OANO-1 microspheres was 78.4% after 108 h. The release half-life t1/2 was 40.8 h and Higuchi equation was Y = 0.1326 X - 0.4782, r = 0.9951.</p><p><b>CONCLUSION</b>The preparation of OANO-1 microspheres was well. The release in vitro of OANO-1 microspheres showed significant sustained release.</p>

Clinical study of the combination of Yanshu injection and NP regimen in patients with advanced nonsmall cell lung cancer(NSCLC) / 肿瘤研究与临床

0.05).The median survival time was 32 weeks in group A compared to 27 weeks in group B(P