Alzheimer's disease(AD)is a multifactorial degenerative disorder of the central nervous system that mainly manifests as cognitive dysfunction and loss of speech.In recent years,the zebrafish has attracted extensive attention because of its high homology with humans in terms of brain structure and function,nerve conduction,and pathogenic genes of AD.This article reviews the advantages of the zebrafish as an animal model of AD,covering topics in the pathogenesis of AD and the evaluation and screening of drugs for treatment of AD.The overall goal is to provide new insights into the pathogenesis of AD and development of novel drugs.

The present study comprehensively compared the content of chondroitin sulfate in Cervi Cornu Pantotrichum(CCP) and Cervi Cornu(CC) of different specifications and explored the feasibility of chondroitin sulfate as an indicator to distinguish between CCP and CC. Twenty-two batches of CCP of different specifications(two-branched velvet antler and three-branched velvet antler) from 15 habitats, CC from 6 habitats, and 60 batches of CCP slices prepared from different parts(wax slices, powder slices, gauze slices, and bone slices) were collected. High-performance liquid chromatography(HPLC) was used to determine chondroitin sulfate content in CCP and CC of different specifications. Cluster analysis was used to classify CCP slices of different specifications. The results showed that CCP contained abundant chondroitin sulfate. The average content of chondroitin sulfate was 2.35 mg·g~(-1) in two-branched velvet antler and 1.79 mg·g~(-1) in three-branched velvet antler, significantly higher than 0.11 mg·g~(-1) in CC. Chondroitin sulfate content in wax slices, powder slices, gauze slices, and bone slices were 7.81, 8.39, 1.33, and 0.54 mg·g~(-1), respectively. Cluster analysis showed that gauze slices and bone slices could be clustered into one category and distinguished from wax slices and powder slices. CCP slices prepared from different parts could be separated well through chondroitin sulfate content. Based on the five principles of Q-marker selection, chondroitin sulfate can be used as a potential Q-marker for the identification of CCP and CC, as well as a potential quality indicator for CCP slices of different specifications(wax slices, powder slices, gauze slices, and bone slices). This research provides data support for CCP quality evaluation.
Animals ; Cornus ; Chondroitin Sulfates ; Deer ; Powders ; Antlers ; Gastropoda

Proton therapy can deliver highly conformal dose distribution to the targeted organs or tissues while minimizing radiation exposure to surrounding normal tissues. These characteristics of proton therapy have great significance for reducing patients′ radiation injuries. Proton therapy has to be performed based on accurate calculation of the dose distributions inside the patients′ body and the proton treatment planning system is thus an indispensable part of proton therapy. The paper intends to provide a review on recent progress in dose algorithm research for proton therapy planning system.

OBJECTIVETo explore the anti-myeloma effect of suberoylanilide hydroxamic acid (SAHA) and on mouse myeloma cell line SP2/0 in vitro and in vivo and its mechanism.

METHODSThe inhibitory effect of SAHA on SP2/0 cells was measured by CCK-8 assay,and the apoptosis and cell cycle were analyzed by flow cytometry FACS. The protein expression of Caspase-3 and p53 of SP2/0 cells treated with SAHA were examined by Western blot. Annexin V/7-AAD double staining was performed to detect the apoptosis of SP2/0 induced by SAHA in vitro. SP2/0 cells (1×10) resuspended in 200 µl PBS were inoculated subcutaneously and intravenously into BALB/c mice, so as to establish aggressive or non-aggressive myeloma-bearing mouse models respectively. On day 3 after modeling, mice received SAHA or vehicle control treatment by intraperitoneal injection. The dose of SAHA was 60 mg/kg·d, 5 times a week for 3 weeks.

RESULTSIn SAHA-treated SP2/0 cells, the proliferation inhibition rate and apoptotic cells increased in a dose dependent manner. Also, SAHA significantly increased the ratio of cells in G phase and decreased in S phase. Molecular mechanisms of apoptosis and cell cycle arrest of SP2/0 induced by SAHA partly correlated with up-regulating the expression level of Caspase-3 and p53. In the non-aggressive myeloma-bearing mice, SP2/0 cells disappeared in peripheral blood after SAHA treatment. In the aggressive myeloma-bearing mice, inhibition of tumor growth and prolongation of the cell survival were observed after SAHA treatment.

CONCLUSIONSAHA inhibited SP2/0 cell proliferation, this effect associates with inducing apoptosis and cell cycle arrest, the mechanism of SAHA ralates partly with activating Caspase-3 and p53 pathway.

Animals ; Antineoplastic Agents ; Apoptosis ; Cell Line, Tumor ; Cell Proliferation ; Histone Deacetylase Inhibitors ; Hydroxamic Acids ; Mice ; Mice, Inbred BALB C ; Multiple Myeloma

Objective To explore the ef fi cacy and safety of long-term use of low dose glucocorticoids in acute respiratory distress syndrome (ARDS). Methods Fifty ARDS patients were randomly divided into two groups. The control group(25 patients)received non-invasive or invasive mechanical ventilation,antibiotics and support treatments. The glucocorticoids group(25 patients)received the same treatments plus long-term use of low dose glucocorticoids. Results The mortality in glucocorticoids group(32％(8/25))was much lower than that in the control group(60％(15/25))(P < 0.05). The ventilator-free days and organ failure-free days within 28d in glucocorticoids group were significantly higher than those in the control group (P < 0.05). The oxygenation index and the serum IL-8 levels in glucocorticoids group at 14d and 28d were higher than those in the control group(P<0.05). Compared to the control group ,long-term use of low dose glucocorticoids in ARDS did not increase fasting blood-glucose at 7d,gastrointestinal bleeding and hospital infections within 28d. Conclusions Long-term use of low dose glucocorticoids in ARDS could reduce the serum IL-8 levels and improve the prognosis.

Objective To explore the expression and significance of COX-2 ,MMP-9 and PTEN in colonic adenocarcinoma tissues .Methods Seventy-two cases of pathologically archived paraffin specimens after colonic adenocarcinoma radical operation in the hospital from March 2014 to May 2016 were collected ,30 cases of colonic adenoma tissues and 30 cases of normal mucosal mem-brane tissues served as the controls .The expressions of COX-2 ,MMP-9 and PTEN were detected by adopting the immunohisto-chemical SP method .Then the correlation between COX-2 ,MMP-9 and PTEN with clinicopathological features of colonic adenocar-cinoma was analyzed .Results The positive expression rate of COX-2 and MMP-9 in colonic adenocarcinoma tissues was significant-ly higher than that in colonic adenoma tissues and normal colon mucosal membrane tissues (P<0 .05);the positive expression rate of PTEN was significantly lower than that in colonic adenoma tissues and normal colon mucosal membrane tissues (P<0 .05) .The expression of COX-2 ,MMP-9 and PTEN in colonic adenocarcinoma was correlated with the tumor invasive depth ,lymph node me-tastasis and TNM staging(P<0 .05) ,while had no correlation with sex ,age ,tumor morphology ,tumor size and differentiation de-gree(P>0 .05) .COX-2 ,MMP-9 and PTEN expressions showed negative correlation (r= -0 .260 ,-0 .282 ,P<0 .05) ,COX-2 and MMP-9 expression showed a positive correlation (r=0 .335 ,P=0 .004) .Conclusion The abnormal expression and interaction of COX-2 ,MMP-9 and PTEN are closely correlated with the occurrence ,invasion and metastasis of colonic adenocarcinoma .Their combined detection has an important significance for early diagnosis and prognosis assessment of colonic adenocarcinoma .

Objective To explore expressions and clinical significance of CDX2,COX-2 and VEGF in colon carcinoma tissues.Methods The expressions of CDX2,COX-2 and VEGF in colon carcinoma tissues of 62 cases and normal colon tissuesof 20 cases were detected by immunohistochemical SP methods.Relationships between clinical pathological features and CDX2,COX-2 andVEGF were analyzed.Results The positive expression rates of CDX2 in colon carcinoma tissues and normal colon tissues were 54.8％ and 95.0％ respectively,the positive expression rates of COX-2 in colon carcinoma tissues and normal colon tissues were 75.8％ and 20.0％,and the positive expression rates of VEGF in colon carcinoma tissues and normal colon tissues were 80.6％ and 25.0％.The positive expression rate of CDX2 in colon carcinoma tissues was significantly lower than that in normal colon tissues(P ＜ 0.05),the positive expression rates of COX-2 and VEGF in colon carcinoma tissues were significantly higher than those in normal colon tissues (P ＜ 0.05).The positive expressions of CDX2,COX-2 and VEGF in colon carcinoma tissues were related with invasive depth and lymph node metastasis (P ＜ 0.05).Spearman correlation analysis results showed that expression of CDX2 was negatively correlated with COX-2 and VEGF in colon carcinoma tissues (P ＜ 0.05),and COX-2 was positively correlated with VEGF in colon carcinoma tissues (P ＜ 0.05).Conclusion The expressions of CDX2,COX-2 and VEGF are closely related with the occurrence,development and prognosis of colon carcinoma.

Objective To explore expressions and clinical significance of CDX2,COX-2 and VEGF in colon carcinoma tissues.Methods The expressions of CDX2,COX-2 and VEGF in colon carcinoma tissues of 62 cases and normal colon tissuesof 20 cases were detected by immunohistochemical SP methods.Relationships between clinical pathological features and CDX2,COX-2 andVEGF were analyzed.Results The positive expression rates of CDX2 in colon carcinoma tissues and normal colon tissues were 54.8％ and 95.0％ respectively,the positive expression rates of COX-2 in colon carcinoma tissues and normal colon tissues were 75.8％ and 20.0％,and the positive expression rates of VEGF in colon carcinoma tissues and normal colon tissues were 80.6％ and 25.0％.The positive expression rate of CDX2 in colon carcinoma tissues was significantly lower than that in normal colon tissues(P ＜ 0.05),the positive expression rates of COX-2 and VEGF in colon carcinoma tissues were significantly higher than those in normal colon tissues (P ＜ 0.05).The positive expressions of CDX2,COX-2 and VEGF in colon carcinoma tissues were related with invasive depth and lymph node metastasis (P ＜ 0.05).Spearman correlation analysis results showed that expression of CDX2 was negatively correlated with COX-2 and VEGF in colon carcinoma tissues (P ＜ 0.05),and COX-2 was positively correlated with VEGF in colon carcinoma tissues (P ＜ 0.05).Conclusion The expressions of CDX2,COX-2 and VEGF are closely related with the occurrence,development and prognosis of colon carcinoma.

Objective To investigate the expression of AR and its relationship with clinicopathological features in human epidermal growth factor receptor-2(Her-2) enrich breast cancer. Mehtods The expression of AR was detected by immunohistochemical staining in 102 patients with Her-2 enrich breast cancer. The relationship between AR expression and its clinicopathological characteristics was analyzed. Results The positive rate of AR expression was 75.5%. Patients in the positive group had a lower level of lymph nodes and Ki-67 value (P < 0.05). However, no significant differences of AR expression were observed in age, menopausal status, tumor size, histological grade, vessel invasion, P53 and PCNA (P > 0.05). Conclusion AR was highly expressed in Her-2 enrich breast cancer, which may be a potential target for treatment of Her-2 enrich breast cancer.

A quantitative HPLC-DAD method was developed for simultaneous determination of N-trans-p-coumaroyloctopamine and N-trans-p-coumaroyltyramine in Solani Melongenae Radix from different cultivation regions in China The separation was performed on an Agilent Eclipse XDB C18 column (4.6 mm x 250 mm, 5 microm) at 30 degrees C with a gradient elution of methanol and 0.1% formic acid in water as mobile phase. The flow rate was set at 1.0 mL x min(-1) and the detection wavelength was 300 nm. The calibration curves of N-trans-p-coumaroyloctopamine and N-trans-p-coumaroyltyramine were linear over the ranges of 2.84-68.16, 3.10-74.40 mg x L(-1), and the average recoveries (n = 9) were 99.30% and 102.8%, respectively. The developed method was successfully applied for the analysis of sixteen samples from different cultivation regions in China, which indicated that the method is simple, rapid, accurate, and reliable for quality evaluation of Solani Melongenae Radix.
Amides ; analysis ; China ; Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; analysis ; Plant Roots ; chemistry ; Solanaceae ; chemistry ; classification