Beta-tricalcium phosphate ( β-TCP) refers to one ideal bone repair substance with good biocompatibility and osteogenicity. A digital light processing (DLP)-system used in this study creates bioceramic green part by stacking up layers of photocurable tricalcium phosphate-filled slurry with various β-TCP weight fractions. Results show that the sintering shrinkage is anisotropic and the shrinkage vertically reaches over that horizontally. The obtained porous β-TCP parts have both macroporous outer structure and microporous inner structure, the macropore size is 400–600 μm and the micropore size is 500–1500 nm. The mechanical tests show that the porous β-TCP bioceramic’s compressive strength reaches 16.53 MPa. The cell culture confirmed that the porous β-TCP bioceramic is capable of achieving the effective attaching, growing, and proliferating pertained to mouse osteoblast cells. This study identified considerable blood vessels and significant ectopic bone forming obviously based on the histologically-related assessment when implanting to rabbit femoral condyle deficiency for 3 months. Thus, under high bioactive property and osteoinductivity, and large precision and mechanical strength that can be adjusted, the DLP printed porous β-TCP ceramics is capable of being promising for special uses of bones repairing.
Premelanosome protein (
PMEL
) is crucial for the formation of melanosomal fibrils through the transition from stage I to stage II melanosomes. It was used as a target antigen in some adoptive T-cell therapy of melanoma. The correlation of
PMEL
to prognosis and immune cell infiltration level are unknown in melanoma. The
PMEL
expression was evaluated via Tumor Immune Estimation Resource, Oncomine and Gene Expression Profiling Interactive Analysis (GEPIA). We also evaluate the influence of
PMEL
on overall survival via GEPIA, PrognoScan, and immunohistochemistry in human tissue microarray. The correlation between
PMEL
expression level and immune cell or gene markers of immune infiltration level was explored on Tumor Immune Estimation Resource and GEPIA.
PMEL
expression was significantly higher in skin cutaneous melanoma (SKCM) and SKCM-metastasis in comparison with the other cancers. In SKCM,
PMEL
expression in high levels was associated with poor overall survival. In both SKCM and SKCM-metastasis patients,
PMEL
expression is negatively correlated with the infiltration cells of CD8
+
T cells, macrophages, and neutrophils. Programmed cell-death protein 1 just showed response rates ranging from 20% to 40% in patients with melanoma, so it is critical to discover a new therapeutic target.
PMEL
is negatively associated with immune cell infiltration and can be as a negative prognosis marker or new immunotherapy target in SKCM and SKCM-metastasis.
Background: Few studies have focused on the correlation between the clinical variables and the survival in Epithelioid Sarcoma (ES). The aim of this study was to investigate the relevant clinical variables influencing the survival of ES patients. Methods: From March 2000 to April 2018, 36 patients (median age, 38 years, range 22–61 years) with ES were evaluated, treated, and followed up. Results: All 36 patients underwent resection in our hospital. Among them, the 2 and 5 years local recurrence rates were 32.0% and 45.1%, respectively, with a better prognosis in patients with R0 resection margin. Distant metastasis rates for the 33 patients with M0 after 2 and 5 years were 51.5% and 70.8%, respectively. Overall survival rates at 2 and 5 years for 36 patients were 74.8% and 43.3%, respectively. Tumor size (>5 cm) and M1 were significantly associated with a poor overall survival. But the R0 resection margin was the only prognostic factor for influencing the LRFS and DMFS. Conclusions: The R0 resection margin and small tumor size were critical for a better prognosis.
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