Objective　The age-related changes of calcitonin gene-related peptide （CGRP）immunoreactive nerve fibers in dental pulp-dentine complex were studied to explore the clinical signs of dental disease and their mechanism of aging.　Methods　Human premolars were collected and divided into 4 groups according to age. All samples were embedded in paraffin and cut into slices. These slices were treated by immunohistochemical reaction of CGRP. The image analysis was used for quantitative analysis and SAS software was used for statistics. 　Results　By aging, the bundle of CGRP-immunoreactive nerve became thin gradually, the numbers of CGRP-immunoreactive nerve branch decreased, the staining density of CGRP-immunoreactive nerve also descended and the distribution of CGRP-immunoreactive nerve fibers into predine was shorter. Image analysis showed that the intergral optical density, volume density, length density and line length of CGRP-immunoreactive nerve were all decreased by aging. The differences in volume density, length density and line length of CGRP-immunoreactive nerve were significant among different groups, but this significance was not found in parameter of integral optical density of CGRP-immunoreactive nerve.　Conclusions　The numbers, branches and extent of distribution of CGRP-immunoreactive nerve fibers decreased by age. The sensitivity of CGRP-immunoreactive nerve may also be lower by age.

Biopsy ; Endopeptidase K ; Fluorescent Antibody Technique ; Glomerulonephritis, IGA ; pathology ; Glomerulonephritis, Membranous ; pathology ; Humans ; Kidney ; pathology ; Lupus Nephritis ; pathology ; Paraffin Embedding ; Staining and Labeling

Objective To observe the effect of allogenic bone marrow mononuclear cells(BM-MNCs) transplantation on myocardial apoptosis after acute myocardial infarction(AMI) in rats.Methods 40 Wistar rats were randomly divided into control group(n=20) and transplantation group(n=20).Myocardium around the infarcted left ventricular area of the rats in transplantation group were injected with BM-MNCs suspension beneath the epicardium.Myocardium the area of control group was injected with culture solution.Results After 4 weeks of the operation,the myocardial apoptosis index,the TNF-? content and the PDCD5 mRNA of transplantation group were all notably less than those of control group(P

Objective To determine the steam distillation processing of Elsholtzia and to optimize different parts volatile oil of the anti-bacterial activity and anti-oxidation activityfrom Elsholtzia. Methods The volatile oil of different parts from Elsholtzia was extracted by steam distillation. The anti-oxidationactivity was texted by DPPH. The antibacterial activity was detected by disk diffusion test. Results Watering 14 times, soaking 6 hours, extracting 3 hours by steam distillation to extracte different parts of volatile oil. It is effective that volatile oil inhibit Escherichia coli, Staphylococcus aureus, Dysentery bacillus＇s blessing. The sequential of antibacterial activity was that Escherichia coli ＞ Dysentery bacillus＇s blessing ＞ Staphylococcus aureus ＞Pseudomonas aeruginosa. The anti-oxidation activity increased the concentration of volatile oil, and was konwn to be the best when the content of the volatile oil is 10%. The anti-oxidation activity of VC was stonger than volatile oil. Conclusions It is effective that volatile oil inhibit Escherichia coli, Staphylococcus aureus, Dysentery bacillus＇s blessing and the volatile oil from inflorescence have a stronger antibacterial activity than the volatile oil from leaf.

The aim of the study was to construct a recombinant adenovirus overexpression vector for Sterol Regulatory Element Binding Protein-1 (SREBP-1) of Xinong Saanen dairy goat, and to detect its effect on genes related to fatty acid metabolism in goat mammary epithelial cells, to establish foundation for further study of its roles in metabolism of fatty acid synthesis and lactation. First, we designed primers based on the SREBP-1 gene sequence in GenBank for PCR amplification and inserted the sequence into shuttle vector pAdTrack-CMV. The recombinant plasmid pAdTrack-CMV-SREBP-1 linearized by Pme I was transformed into E. coli BJ5183 competence cell containing the backbone vector pAdEasy-1 to obtain recombinant vector pAd-SREBP-1 by homologous recombination. pAd-SREBP-1 was linearized by Pac I and transfected into HEK 293 cell. Then we infected goat mammary epithelial cells with recombinant adenovirus which was packaged in HEK 293 cell line. The results showed that the recombinant adenovirus vector containing SREBP-1 was successfully constructed, and the titer of virus was 10(9) U/mL. Compared with the control group, mRNA level of SREBP-1 increased by about 15 times after infected for 48 h and 30 times after infected for 72 h. Fatty acid synthase (FASN) and Acetyl-CoA carboxylase (ACC) was upregulated by almost 2 times. The expression level of Peroxisome proliferator activated receptorgamma (PPARgamma) increased by 1.5 times. Liver X receptoralpha (LXRalpha) and Adipose triglyceride lipase (ATGL) upregulated by 1.2 times compared with that of control. But Stearoyl-coenzyme A desaturase (SCD) had no obvious change. In conclusion, SREBP-1 can activate the expression of genes related to fatty acid synthesis in mammary epithelial cells of Xinong Saanen dairy goat, demonstrated a regulatory function on the fatty acid metabolism in goat mammary gland.
Adenoviridae ; genetics ; metabolism ; Animals ; Epithelial Cells ; cytology ; metabolism ; Fatty Acids ; metabolism ; Female ; Gene Expression Regulation ; Goats ; genetics ; HEK293 Cells ; Humans ; Lipid Metabolism ; genetics ; Mammary Glands, Animal ; cytology ; Sterol Regulatory Element Binding Protein 1 ; genetics ; metabolism ; Transfection

Objective To study CD10 expression in cancer-associated fibroblasts ( CAF ) and related effect on colorectal cancer initiation and progression .Methods A total of 226 surgical removed colorectal cancer specimens were collected with patient follow-up data.A panel of immunohistochemical markers(CD10, Ki-67, p53, cyclin D1 and β-catenin) were evaluated in carcinomas, adjacent adenomas and paired normal colorectal mucosa with correlation of clinicopathological parameters .Results CD10 expression was not detected in the normal colorectal mucosa by immunohistochemistry .The percentages of CD10 expression in CAF were 80.1%(181/226) in carcinoma tissue and 58.4%(132/226) in adjacent adenomas, respectively.SMA was positive and desmin was negative .The proliferation index of Ki-67 was 84.1%(190/226) in tumor tissue, 63.7%(144/226) in adenoma zone, and 7.1% (16/226) in the normal mucosa.The rate of p53 mutation was 50.4% (114/226) in tumor tissue, 53.1%(120/226) in adenoma and 8.8%( 20/226 ) in the normal mucosa. The expression rate of cyclin D1 was 83.6%(189/226) in tumor tissue, 48.7%(110/226)in adenoma zone, but negative in the normal mucosa.For normal tissue , the percentages of β-catenin expression was 53.1%( 120/226 ) , 95.6%( 216/226 ) and 10.6%(24/226) in the cell membrane, cytoplasm and nucleus, respectively.The β-catenin expression in cell membrane, cytoplasm and nucleus was 17.7% ( 40/226 ), 100.0% ( 226/226 ) and 49.1%(111/226), respectively, in the tumor cells.The expression of Ki-67, p53, cyclin D1 andβ-catenin in the tumor cells was positively associated with CD 10 in CAF (P<0.05).The CD10 expression was different in patients with different gender , age and differentiation degree ( P<0.05 ) , whereas the depth of invasion , lymph node metastasis and tumor emboli did not relate to it .Overall survival rates in CD10 negative group were higher than that in CD10 positive group.Conclusions CD10 is only expressed in CAF.Significant correlation is found between CAF with high CD 10 expression and neighboring tumor cells with p 53, Ki-67 and cyclin D1 expression and nuclear β-catenin expression.CD10-positive CAF and p53, β-catenin, cyclin D1 and Ki-67-labelled colorectal cancer cells together with nuclear β-catenin expression may provide helps for diagnosis of colorectal carcinoma from an angle of tumor interstitial microenvironment .CAF with CD10 expression may promote the initiation and progression of colon cancer cells by activating Wnt signaling pathway.

To investigate the expression of CD10 in tumor-associated fibroblasts (TAF) in colorectal adenomas and its relation to cancerization and recurrence of adenoma.Tissue samples of low-grade adenoma (=50), high-grade adenoma (=50) and colorectal adenocarcinoma (=50) were collected, and tissue samples at the distal margin of corresponding colorectal lesions were taken as controls. The expression of CD10 in the stromal TAFs, and the expressions of β-catenin, Ki-67, p53 and CyclinD1 in tumor cells were detected by immunohistochemistry (Envision). The correlation of CD10 expression in stromal TAFs with the expressions of β-catenin, Ki-67, p53 and CyclinD1 in tumor cells was analyzed by Spearmen. One hundred samples of low-grade colorectal adenoma were collected, including 57 non-recurrent cases and 43 recurrent cases (16 cases of recurrent adenoma and 27 cases of recurrent adenocarcinoma); the expression of stromal TAF CD10 were determined and compared among groups.There was no TAF in normal colorectal mucosa. The expression rates of TAF CD10 in low-grade adenoma, high-grade adenoma and colorectal adenocarcinoma were 22%, 50% and 78%, respectively (all<0.05). The expression of Ki-67 and β-catenin in low-grade adenoma, high-grade adenoma, colorectal adenocarcinoma was on a rising trend (all<0.01). The expression of CyclinD1 in high-grade adenoma was higher than that in colorectal adenocarcinoma and low-grade adenoma (all>0.05). The expression of p53 in colorectal adenocarcinoma and high-grade adenoma was higher than that in low grade adenoma (all<0.01). The expression of TAF CD10 was correlated with the expression of p53, Ki-67 and β-catenin-nucleus(=0.264、0.307、0.320, all<0.01),but not correlated with CyclinD1 and β-catenin-membrane (=0.012、-0.073, all>0.05). The TAF CD10 level was significantly higher in low-grade adenoma with recurrence than that in those without recurrence (<0.05).The expression of CD10 in recurrent colorectal adenocarcinoma was higher than that in recurrent adenoma (<0.05).The expression of TAF CD10 is increased gradually in the process of adenoma-cancer, indicating that it may play an important role in the canceration of adenoma. Adenomas with high expression of CD10 TAF are likely to be recurrent and cancerized, and detection of TAF CD10 combined with p53, Ki-67 and β-catenin may be of value in predicting canceration or recurrence of colorectal adenoma.
Adenocarcinoma ; chemistry ; genetics ; Adenoma ; chemistry ; genetics ; Biomarkers, Tumor ; analysis ; Cancer-Associated Fibroblasts ; chemistry ; Carcinogenesis ; chemistry ; Colorectal Neoplasms ; chemistry ; genetics ; Cyclin D1 ; analysis ; Disease Progression ; Humans ; Immunohistochemistry ; Ki-67 Antigen ; analysis ; Neoplasm Grading ; Neoplasm Recurrence, Local ; chemistry ; Neprilysin ; analysis ; Predictive Value of Tests ; Tumor Suppressor Protein p53 ; analysis ; beta Catenin ; analysis