Objective To study the expression of aquaporins-4 (AQP4) in the brain tissue of rats with pancreatic encephalopathy (PE) induced by phospholipase A2 and to explore the role of aquaporins-4 in PE.Methods Twenty five healthy Wistar rats were randomized into 3 groups:blank group ( n =5),PE group (n =10 ) and control group (n =10 ).The experimental model was established in rats by injecting phospholipase A2 into carotid artery (0.1 ml/100 g body weight).Same amount of normal saline was used in the control group and no treatment was used in the blank group.One day later,the rats were sacrificed,then the measurement of brain tissue wet/dry (W/D) weight ratio was performed,and brain tissue was routinely pathologically examined,immunohistochemistry and Western blotting were performed in each group to detect the expression of aquaporins-4.Results There was no obvious brain tissue pathological change in the control group and blank group.Neurons in the brain tissue of PE rats presented with significant edema and ballooning degeneration,infiltration of inflammatory cells,leukocyte aggregation around the microvessels.The water contents in the brain tissue in the blank group and control group,PE group were (61.44 ±0.36)％,(63.20±0.32)％ and (78.33 ±0.24)％,and it was significantly higher in PE group than that in the control and blank group (P＜0.05).The expressions of aquaporins-4 in the brain tissue were 0.41 ±0.27,0.49 ±0.13,0.98 ±0.21,respectively,and it was significantly increased in PE group than that in the control and blank group (P ＜ 0.05 ).Conclusions Aquaporins-4 may play important roles in the pathogenesis of pancreatic encephalopathy.

Objective To evaluate the value of contrast-enhanced ultrasound in superficial lymphadenopathy. Methods Ninty-four superficial enlarged lymph nodes were studied by 2-dimensional, color Doppler ultrasound, and contrast-enhanced ultrasound. Then the contrast-enhanced images were analyzed by Philips Q-LAB software. All the results were compared with pathological diagnosis. Results For the 94 superficial lymph nodes examined,44 were benign,33 were metastases and 17 were lymphomas. The sensitivity, specificity,and accuracy of contrast-enhanced images were 84% ,74% and 790//oo respectively. Contrast-enhanced ultrasound examination showed intense homogeneous enhancement in 39 of 44 benign lymph nodes; high or low homogeneous enhancement in 25 of 33 and 7 of 33 in metastases respectively;intense homogeneous, and scarce enhancement in 6 of 17 and 9 of 17 in lymphomas respectively. Time-intensity curves showed that compared with metastasis lymph nodes and lymphomas, benign lymph nodes had higher peak intensity and larger area under the curve (P<0.01). Conclusions The diagnosis accuracy was significant increased when contrast-enhanced ultrasound was test against conventional ultrasound. The character of contrast agent enhancement and Q-LAB time-intensity curves provide valuable diagnosis information for differential diagnosis of benign,metastasis lymph nodes and lymphomas.

This article reports one hepatic echinococcosis patient complicated with systemic sclerosis. His clinical manifesta?tions were the progressive fibrosis of the skin,sour regurgitation,and belching. The blood examination showed that eosinophils was reduced,and antinuclear antibody(ANA)was positive at 1∶100 in cytoplasm particle type. He was given prednisone ace?tate 25 mg,q. d.,aspirin 100 mg,q. d.,centella triterpenes cream 12 mg t. i. d.,esomeprazole 40 mg q. d.,and domperidone 10 mg t. i. d. After one week,the Rodnan skin score reduced from 27 to 17. The liver hydatid cyst resection was performed,and the follow?up showed that his clinical manifestations improved and the Rodnan skin score reduced further.

To investigate the protection effect of DNA vaccine in mammalian and avian systems, the DNA vaccine was inoculated in both BALB/c mice and SPF chickens immunized with DNA vaccines encoding hemagglutinin (HA) from A/Goose/GuangDong/1/96 (H5N1) virus. The mice and chickens were immunized twice, 3 weeks apart, by electroporation into muscles or intramuscular injection. Two weeks after the second immunization, the mice and chickens were challenged with a lethal dose of homologous virus. The mice and chickens immunized by electroporation obtained completely protection against the virus, and could effectively inhibited viruses to replicating in mouse lung and chicken cloaca. At the same time, these protections were companied by high levels specific antibody to H5N1 AIV, while the blank plasmid controls experience 100 percent mortality following challenge. Furthermore, in the experiment of mice by eletroporation,stronger obviously CTL activity were observed after challenge. Thus, the cellular immune responses of the mice immunized by electroporation were exhibited. These results strongly demonstrate that HA DNA vaccines provide effective protection against influenza virus infection in mammalian and avian, and suggest that electroporation is one of the efficient gene delivery systems for the transfer of influenza DNA vaccine in both humoral immunity and cellular immunity.

Objective To explore the association of C20orf54 gene rs3746804 position single nucleotide polymorphism and susceptibility to esophageal squamous cell carcinoma (ESCC).Methods Purification of genomic DNA from whole blood was used the Maxwell(R) 16 System.rs3746804 in C20ort54 was detected by direct sequencing in 434 ESCC patients from Changzhi (Shanxi province) and Linzhou (Henan province) and 554 healthy controls from Changzhi,Linzhou and including immigrators from Linzhou to Changzhi.Results For rs3746804,the genotypic frequencies of CT(37.5％ vs 51.0％,37.5％ vs 52.0％),CC (44.2％ vs 34.8％,44.2％ vs 33.0％) in Changzhi ESCC patients showed significant differences with healthy Changzhi controls and the healthy immigrator controls (all P ＜ 0.05),and the frequencies of TT(18.3％ vs 4.1％) and CC (44.2％ vs 54.6％) in Changzhi ESCC patients showed significant differences with Linzhou ESCC patients (all P ＜0.05).The genotypic frequencies of TT (4.1％ vs 15.0％),CT (41.2％ vs 52.0％) and CC(54.6％ vs 33.0％) showed significant differences between Linzhou ESCC patients and the healthy immigrator controls (all P ＜ 0.05),and the frequencies of TT (4.1％ vs 14.1％) and CC (54.6％ vs 34.8％) showed significant differences between Linzhou ESCC patients and Changzhi healthy controls (all P ＜ 0.01).Meanwhile,there were significant differences between ESCC patients (including Changzhi and Linzhou ESCC patients) and healthy controls (including the healthy Changzhi,Linzhou and immigrator controls) in genotypic frequencies of CT(39.2％ vs 48.7％) and CC (48.8％ vs 38.2％) (all P ＜ 0.01).CT and CT + TT genotype could decrease the risk of ESCC compared with the CC genotype (OR =0.630,95％ CI0.481-0.826 ; OR =0.654,95％ CI 0.507-0.844).Conclusion There is a closed relationship between SNP rs3746804 in C20orf54 and susceptibility to ESCC.

Objective:To investigate the role of peroxisome proliferator-activated receptor γ (PPARγ)/CD36 signaling pathway in macrophage lipid metabolism after Mycobacterium tuberculosis ( Mtb) infection. Methods:THP-1-derived macrophages were infected with Mtb. Four groups were included in this study, which were control group, Mtb infection group, Mtb+ rosiglitazone (ROZ, PPARγ agonist) group and Mtb+ GW9662 (PPARγ antagonist) group. Western blot and RT-PCR were used to detect the expression of PPARγ in macrophages at protein and mRNA levels, respectively. The lipids in cells were detected by oil red O staining. The concentrations of total cholesterol (TC), triglycerides (TG), low density lipoprotein (LDL-C) and high density lipoprotein (HDL-C) in the supernatant of cell culture were detected by automatic biochemical analyzer. The expression of CD36 was detected by immunohistochemistry. CCK-8 was used to detect the proliferation rate of macrophages. Results:Mtb infection significantly increased the expression of PPARγ in macrophages ( P<0.001), promoted intracellular lipid aggregation and CD36 expression and decreased the levels of TC, TG, LDL-C and HDL-C in the supernatant of cell culture ( P<0.001) and cell proliferation rate ( P<0.001). PPARγ agonist significantly enhanced the intracellular lipid accumulation and CD36 expression that were induced by Mtb infection and down-regulated the lipid level in the supernatant of cell culture and cell proliferation rate, while PPARγ antagonist reversed the above effects. Conclusions:PPARγ played a role in lipid metabolism in Mtb-infected macrophages through affecting CD36 expression.

A type of entomopathogenic fungus of soil in Citrus grandis 'tomentosa' production base was isolated and identified with morphological and molecular biological methods, including pathogenesis, spore characteristic and ITS sequence analysis were conducted. The results showed that eighteen entomopathogenic fungi strains were isolated from the Tenebrio molitor infected in the soil samples, which were identified as Metarhizium anisopliae var. anisopliae. Based on results above, we concluded that there was quantity of Metarhizium resources in this area. These provided the useful information for controlling some pests of C. grandis by using these strains of fungus.
Animals ; Citrus ; parasitology ; Metarhizium ; isolation & purification ; physiology ; Pest Control, Biological ; methods ; Soil Microbiology

Objective To investigate the clinicopathological significance of PDC in liver metastases and analyze the correlation of PDC between liver metastases and primary lesions. Methods Retrospective analysis of 72 matched cases of colorectal cancer with liver metastases was performed. The PDC in primary tumor and liver metastatic lesion was interpreted synchronously, and then the relationship between PDC in liver metastasis and clinicopathological parameters was analyzed based on the correlation of PDC between primary and metastatic lesions. In addition, PDC were interpreted in accordance with Uenos' standard. Results Among the 72 cases of liver metastasis of colorectal cancer, the number of G1, G2, and G3 graded by PDC was 28, 24, and 20, respectively. The PDC in liver metastatic lesion was correlated with tumor budding in liver metastatic lesion and PDC grade of primary lesion. No significant correlation with the size and number of liver metastatic lesion, the site, WHO grade, depth of invasion, lymph node metastasis, vascular invasion or tumor budding of the primary lesion was observed. Conclusion A positive correlation is found between liver metastasis of colorectal adenocarcinoma and PDC grade of primary tumor. Evaluating the PDC grade of primary tumor may provide a reference for the risk of liver metastasis.

Objective:To observe the clinical effects of Traditional Chinese Medicine (TCM) Tangnaikang granules, supplementing to conventional treatment methods, on type 2 diabetic foot ulcer.Methods:A total of 67 patients, from Beijing University of Chinese Medicine subsidiary Dongfang Hospital, Tuanjie Lake Community Health Service Center, Qingta Community Health Service Center between August, 2019 and November, 2020 were assigned to treatment group (37 patients) and control group (30 patients) using sealed envelope randomization method. The control group underwent conventional treatment methods that manage blood sugar and treat infections. The treatment group received, in addition to the conventional treatment methods administered to the control group, Tangnaikang granules. Both groups were continuously treated for 90 days. The TCM symptom scores, granulation tissue scores, visual analogue scale (VAS), itching scores and Generic Quality of Life Inventory-74 (GQOL-74) score, wound area were observed pre- and post-treatment. The ELISA kits were used to detect the Vascular Endothelial Growth Factor (VEGF), Epidermal Growth Factor (EGF), Basic Fibroblast Growth Factor (bFGF), fasting blood glucose level, glycated hemoglobin test (HbA1c), fasting insulin level, postprandial 2 hour insulin level, insulin resistance index. And all possible adverse events were noted. The overall clinical treatment effects and TCM symptom treatment effects were assessed.Results:Total effective rate for the treatment group 89.2% (33/37), was significantly different from that of the control group 70.0% (21/30) with χ2=3.90 and P<0.01. The TCM symptom effective rate was 86.5% (32/37) for the treatment group and 63.3% (19/30) for the control group. The difference was statistically different with χ2=4.88 and P<0.01. After treatment, whole blood viscosity, plasma viscosity, fibrinogen and erythrocyte sedimentation rate (ESR) of the treatment group were significantly improved than those of the control group ( t=-23.38, -8.01, 18.10, -18.93,all Ps<0.01). The ulcer closure area (5.43±1.65 cm 2vs. 4.65±1.14 cm 2, t=2.20) and ulcer closure area percentage (59.14%±3.37% vs. 42.42%±3.21%， t=20.63) were statistically different of both groups ( P<0.05 or P<0.01). The VEGF, EGF, and bFGF at 90 day of the treatment group were significantly higher than those of the control group ( t=3.19, 40.59, 28.53, all Ps<0.01). The post-treatment fasting blood glucose level, insulin resistance index of the treatment group were significantly lower than those of the control group ( t=-8.55, -21.38, all Ps<0.01). TCM symptoms of thirsty, feverish sensation in chest, palms and soles in the treatment group were significantly improved than the control group ( χ2=4.38, 4.48, all Ps<0.01). Conclusion:TCM compound Tangnaikang granules can relieve diabetic foot ulcer, reduce wound healing time and improve overall treatment outcome, when it was combined of the conventional treatment.