[Application of totally extraperitoneal renal autotransplantation with Boari flap-pelvis anastomosis in upper urinary tract urothelial carcinomas treatment].

OBJECTIVE: To evaluate the feasibility and effectiveness of the totally extraperitoneal renal autotransplantation with boari flap-pelvis anastomosis in the treatment of upper urinary tract urothelial carcinoma (UTUC), and to review the experience of renal autotransplantation for UTUC treatment. METHODS: One case of applying the totally extraperitoneal renal autotransplantation with boari flap-pelvis anastomosis to the UTUC treatment was reported, and related literature was reviewed. The patient was a sixty-four-year old man who received right radical nephroureterectomy for right ureteral carcinoma 1 year before and diagnosed as left ureteral carcinoma(G2, high grade) this time. In order to preserve his renal function and avoid the shortness of common kidney-sparing surgery, a totally extraperitoneal procedure, including retroperitoneoscopic nephrectomy, ureterectomy, renal autotransplantation and Boari flap-pelvis anastomosis, was performed to the patient. RESULTS: The operation was completed successfully without perioperative complications. The renal function recovered to preoperative level within 1 week. No deterioration of renal function during the follow-up and no tumor recurrence was observed under cystoscopy at the 3-month postoperative consult. CONCLUSION: The totally extraperitoneal renal autotransplantation with Boari flap-pelvis anastomosis is a feasible and effective treatment for UTUC. The innovative procedure has several advantages compared to the former ones. The extraperitoneal procedure results in significantly less pain, shorter hospital stay, decreased overall time to recovery and lower bowel complications risk without warm ischemia time extension. Meanwhile, the Boari flap-pelvis anastomosis simplifies the follow -up protocols and creates an easy route for cystoscopy and topical therapy. From the systematic clinical analysis, as well as the related literature review, it's been concluded that the renal autotransplantation can be a reasonable option for the patients who have UTUC in solitary kidney or have bilateral UTUC. This type of treatment possesses advantages of preservation of renal function and total resection of malignant lesions. But long-term data and large cohort study on renal function or tumor recurrence are still absent which will be necessary to confirm the advantages of this approach.

Long noncoding RNA LINC00473 indicates a poor prognosis of breast cancer and accelerates tumor carcinogenesis by competing endogenous sponging miR-497.

OBJECTIVE: Long noncoding RNA LINC00473 (LINC00473) has been reported to be involved in the progression of several tumors. Our present study was conducted to study the potential roles and mechanism of long noncoding RNA LINC00473 (LINC00473) on cells proliferation, migration, invasion, and apoptosis of breast cancer (BC). PATIENTS AND METHODS: RT-PCR was applied for the analysis of LINC00473 in BC cell lines and tissues samples. The correlations between the LINC00473 levels and clinicopathological parameters were investigated. Kaplan-Meier methods and Cox proportional hazards regression models were explored to reveal potential associations of LINC00473 levels with overall survival of BC patients. The effect of LINC00473 on tumor behavior was evaluated by colony formation, Cell Counting Kit-8, EdU assays, flow-cytometric analysis, wound healing assays and transwell assays. Interactions between LINC00473 and miR-497 were determined using a luciferase reporter assay and RT-PCR assays. RESULTS: Upregulation of the expression of LINC00473 was found in BC samples and cell lines, in comparison with non-tumor breast tissues and human breast epithelial cells. High expression of LINC00473 was correlated with lymph node metastasis, clinical stage, and poorer outcome in BC patients. Multivariate logistic regression assays further showed LINC00473 as an independent prognostic factor in BC. Lost-of-function assays revealed that knockdown of LINC00473 resulted in the suppression of tumor cell proliferation, promotion of cells apoptosis, inhibition of cells metastasis. Bioinformatics analysis and luciferase reporter assays revealed LINC00473 bonds to miR-497. Further RT-PCR revealed that knockdown of LINC00473 suppressed the expressions of miR-497 in BC cells. CONCLUSIONS: Our data revealed that LINC00473 acted as a tumor promoter in BC and LINC00473/miR-497 axis may be a novel therapeutic strategy for this tumor.