The regulatory mechanism of CCR7 gene expression and its involvement in the metastasis and progression of gastric cancer.

Gastric cancer is the second leading cause of cancer mortality, but the molecular mechanisms underlying its progression and metastasis remain unclear. CCR7 and Dicer 1 protein expression in 80 gastric adenocarcinomas and 40 peritumoral tissues were measured by immunohistochemical staining. The expression of let-7a miRNA in serum, tumor tissues, and peritumoral tissues was measured by real-time PCR.

Calcification resistance for photooxidatively crosslinked acellular bovine jugular vein conduits in right-side heart implantation.

This study aimed to investigate the effect of decellularization plus photooxidative crosslinking and ethanol pretreatment on bioprosthetic tissue calcification. Photooxidatively crosslinked acellular (PCA) bovine jugular vein conduits (BJVCs) and their photooxidized controls (n = 5 each) were sterilized in a graded concentration of ethanol solutions for 4 h, and used to reconstruct dog right ventricular outflow tracts. At 1-year implantation, echocardiography showed similar hemodynamic performance, but obvious calcification for the photooxidized BJVC walls.

The performance of photooxidatively crosslinked acellular bovine jugular vein conduits in the reconstruction of connections between pulmonary arteries and right ventricles.

In this study, valved photooxidatively crosslinked acellular bovine jugular vein conduits (BJVCs) were implanted in young dogs to reconstruct the connections of pulmonary arteries and right ventricles, with acellular conduits used as controls. All acellular conduits had moderate to severe valvular dysfunction and were explanted at 1-month implantation (n = 5). Histological examination showed inflammatory cell infiltration and intimal hyperplasia in the walls, and severe inflammatory cell infiltration and thrombosis in the valves.

Decellularized and photooxidatively crosslinked bovine jugular veins as potential tissue engineering scaffolds.

Decellularization means and altering crosslinking approaches were two promising alternatives for glutaraldehyde fixation to biological tissues. Bovine jugular veins (BJVs) were decellularized by a multi-step detergent-enzymatic extraction method, then photooxidatively crosslinked. Gross and histological integrity of which was retained.

[Relation of tumor associated macrophages and mast cells of tumor interstitial and angiogenesis in non-small cell lung cancer].

Objective: To detect tumor microvessel count (MVC), tumor associated macrophage (TAM) and Mast cell (MC) counts, and to explore their correlation and the clinical significance in non-small cell lung cancer (NSCLC).

Methods: Immunohistochemical staining (ABC method) was used to measure MVC and TAM and MC counts in 40 cases of NSCLC tissues and 10 cases of normal pulmonary tissues as contrast.

Results: The counts of microvessel, TAMs, and MCs in the NSCLC tissues were apparently higher than those of the normal tissues, and these counts increased with the development of T stage and clinical stage, metastasis of the tumor, and the reduction of the patient survival time.

[Effect of decellular treatment on the framework of extracellular matrix in bovine jugular vein conduit].

Objective: To investigate the effect of decellular treatment on the framework constituents of extracellular matrix and tissue stability in bovine jugular vein conduit (BJVC), and to provide an evidence for tissue engineering of vascular prosthesis.

Methods: Bovine jugular veins were obtained fresh from a local slaughterhouse and were stored in chilled PBS. In the laboratory, any fat and loose connective tissue on the outer surface of the vessel was trimmed.

[Effect of chemokine interleukin-8, monocyte chemoattractant protein-1 and macrophage inflammatory protein-1 on the angiogenesis of non-small cell lung cancer].

Objective: To detect the expressions of chemokines interleukin-8 (IL-8), monocyte chemoattractant protein-1 (MCP-1), and macrophage inflammatory protein-1 (MIP-1) mRNA in non-small cell lung cancer (NSCLC) tissues, to analyze their relationship with microvessel counts (MVC), and their significance in clinic pathologic features of NSCLC.

Methods: In situ hybridization was used to measure the expressions of chemokine IL-8, MCP-1, and MIP-1 mRNA in 40 NSCLC tissues and 10 normal pulmonary tissues, and immunohistochemical staining was carried out to measure the MVC in the above tissues.

Results: The positive ratios of IL-8, MCP-1, and MIP-1 mRNA in the 40 NSCLC tissues were apparently higher than those in the 10 normal contrast tissues and the difference was statistically significant.

[Bovine jugular venous conduit treated with the polyepoxy compound].

Objective: To determine the feasibility whether the bovine jugular venous conduit (BJVC) can be fixed with polyepoxy compound (PC).

Methods: Twenty-four BJVCs were divided into 3 groups and fixed with polyepoxy compound (PC group, n = 8), glutaraldehyde (GA group, n = 8), and unfixed group (Control group, n = 8), respectively. The morphologic and mechanical properties of BJVCs in the 3 groups, including thickness, diameter, moisture content, denaturation temperature, tensile strength, elongation at break, and fixation index were measured.

[Lymphangiogenes and location of tumor lymphatic vessels induced by VEGF-C in primary breast carcer].

Objective: To investigate the lymphangiogenesis and location of tumor lymphatic vessels induced by vascular endothelial growth factor C (VEGF-C) in primary breast cancer.

Methods: The expression of VEGF-C mRNA in 89 cases of primary breast cancer was detected by in situ hybridization, and lymphatic vessels with vascular endothelial growth factor receptor-3 (VEGFR-3) were labeled by immunohistochemistry SP method.

Results: VEGF-C mRNA expressed in 49 of all 89 cases of primary breast cancer, and the expression rate was 55.

[Morphologic and physiochemical properties of bovine jugular conduit stabilized by dye-mediated poto-oxidation].

Objective: To determine the morphologic and physiochemical properties of bovine jugular conduit with valves stabilized by dye-mediated photo-oxidation.

Methods: Twenty-four bovine jugular conduits with valves were divided into 3 groups and treated with dye-mediated photo-oxidation (Group I), glutaraldehyde (Group II) and untreated group (Group II), respectively. Morphologic and physiochemical properties of the 3 groups, including wall thickness, diameter, tissue water content, heat shrinking temperature, breaching strength, and tissue protein extraction assay were studied.