[Clinical analysis of 12 cases of laryngeal neuroendocrine carcinoma].

Objective: To investigate the clinical and pathological features, treatments and prognosis of laryngeal neuroendocrine carcinoma (LNEC). Methods: We conducted the retrospective analysis of the clinical data of 12 patients with LNEC admitted to the Department of Otorhinolaryngology Head and Neck Surgery, Second Hospital of Shanxi Medical University from May 2014 to December 2021, including 9 males and 3 females, aged 50-77 years. There were 4 cases of typical carcinoid tumour (highly differentiated), 5 cases of atypical carcinoid tumour (moderately differentiated) and 3 cases of neuroendocrine small cell carcinoma (hypofractionated). The clinical features, diagnosis, treatment and prognosis of LNEC were analysed. Results: The clinical manifestations of LNEC varied according to the tumour type but did not correlate with the pathological types. The supraglottic type was characterized by sore throat, foreign body sensation in the pharynx, coughing, obstructive sensation when eating and choking on water. The treatments were determined according to the pathological types, lesion location and invasion scope. Of 12 patients 4 underwent horizontal partial laryngectomy plus elective lymphatic dissection plus postoperative radiotherapy/chemotherapy, 4 underwent vertical partial laryngectomy (3 of them with cervical lymphatic dissection), 3 underwent supported laryngoscopic plasma laryngectomy for laryngeal cancer, and 1 abandoned for treatment. With the follow-up of 8 -78 months, 5 patients were alive, 1 died from chemotherapy reactions, 3 died from other diseases, 1 died from lung metastasis, 1 died from lung infection and 1 was lost to follow-up. Conclusion: LNEC is clinically rare, the clinical manifestations are less specificity, diagnosis relies on pathological and immunohistochemical examinations, and treatment modalities and prognoses are closely related to the pathological subtypes of LNEC.

LncRNA DSCAM-AS1 promoted cell proliferation and invasion in osteosarcoma by sponging miR-101.

OBJECTIVE: Long noncoding RNAs (lncRNAs) play critical roles in osteosarcoma (OS) progression. LncRNA DSCAM-AS1 has been reported to function as a tumor promoter in various cancers. However, the potential mechanism of DSCAM-AS1 in OS remains rarely know. PATIENTS AND METHODS: The expression levels of DSCAM-AS1 and miR-101 were detected by RT-qPCR. The correlation between DSCAM-AS1 and miR-101 expression was analyzed by Pearson's correlation. Kaplan-Meier analysis was used to assess the overall survival rate. Cell viability and invasion were assessed by MTT assay and transwell assays, respectively. A Luciferase reporter assay was used to identify the relationship between DSCAM-AS1 and miR-101. RESULTS: In the present study, it was demonstrated that DSCAM-AS1 expression was significantly upregulated in OS tissues and cells and high expression of DSCAM-AS1 predicted poor prognosis in OS patients. In addition, the silencing of DSCAM-AS1 suppressed the viability and invasion of OS cells, while DSCAM-AS1 overexpression promoted cell viability and invasion. Furthermore, we found that DSCAM-AS1 inhibited miR-101 expression by direct interaction and DSCAM-AS1 promoted OS progression by sponging miR-101. In addition, miR-101 expression was negatively correlated with DSCAM-AS1 expression. Patients with low miR-101 expression had a shorter overall survival time compared with those with high miR-101 expression. CONCLUSIONS: The present study demonstrated that DSCAM-AS1 accelerated OS cell progression by sponging miR-101, which might provide a new sight in the treatment of OS.

SPARCL1 suppresses osteosarcoma metastasis and recruits macrophages by activation of canonical WNT/ß-catenin signaling through stabilization of the WNT-receptor complex.

Metastasis significantly reduces the survival rate of osteosarcoma (OS) patients. Therefore, identification of novel targets remains extremely important to prevent metastasis and treat OS. In this report, we show that SPARCL1 is downregulated in OS by epigenetic methylation of promoter DNA. In vitro and in vivo experiments revealed that SPARCL1 inhibits OS metastasis. We further demonstrated that SPARCL1-activated WNT/ß-catenin signaling by physical interaction with various frizzled receptors and lipoprotein receptor-related protein 5/6, leading to WNT-receptor complex stabilization. Activation of WNT/ß-catenin signaling contributes to the SPARCL1-mediated inhibitory effects on OS metastasis. Furthermore, we uncovered a paracrine effect of SPARCL1 on macrophage recruitment through activated WNT/ß-catenin signaling-mediated secretion of chemokine ligand5 from OS cells. These findings suggest that the targeting of SPARCL1 as a new anti-metastatic strategy for OS patients.

Research on the correlation of diabetes mellitus complicated with osteoporosis with lipid metabolism, adipokines and inflammatory factors and its regression analysis.

OBJECTIVE: To investigate the correlation of type 2 diabetes mellitus (DM) complicated with osteoporosis with lipid metabolism, adipokines and inflammatory factors, and to define the risk factors via the multivariate regression analysis. PATIENTS AND METHODS: A total of 80 patients with DM admitted into our hospital from November 2015 to November 2016 were enrolled, including 40 patients complicated with osteoporosis and 40 patients not complicated with osteoporosis. The levels of blood lipid, adipokines and inflammatory factors were compared; the correlations between bone mineral density (BMD) and total cholesterol (TC), adiponectin and tumor necrosis factor-α (TNF-α) were analyzed; and multivariate Logistic regression analysis was performed for osteoporosis, hyperlipidemia, abnormal adipokine levels and body's inflammatory response. RESULTS: The levels of serum lipid indexes, total cholesterol (TC), triglyceride (TG) and low-density lipoprotein cholesterol (LDL-C), in patients without complicating osteoporosis were significantly lower than those in patients complicated with osteoporosis. The level of high-density lipoprotein cholesterol (HDL-C) was significantly higher than that in patients complicated with osteoporosis. The levels of adipokines, adiponectin and visfatin, in patients without complicating osteoporosis were significantly lower than those in patients complicated with osteoporosis. The levels of inflammatory factors, TNF-α, interleukin-6 (IL-6) and C-reactive protein (CRP), in patients without complicating osteoporosis were significantly lower than those in patients complicated with osteoporosis. There were negative correlations between BMD and TC, adiponectin and TNF-α. Abnormal blood lipid, abnormal adipokine levels and elevated inflammatory factor levels were independent risk factors for osteoporosis. CONCLUSIONS: Enhanced inflammatory response, abnormal blood lipid metabolism and abnormal changes in adipokines may increase the risk of osteoporosis in patients with diabetes mellitus.

Comparison of lumbar pedicular dynamic stabilisation systems versus fusion for the treatment of lumbar degenerative disc disease: A meta-analysis.

This study aimed to systematically compare the safety, effectiveness and radiological changes after lumbar pedicular dynamic stabilisation systems and fusion to treat lumbar degenerative disc disease . All studies that were performed to compare various lumbar pedicular dynamic stabilisation systems with any lumbar fusion to treat lumbar degenerative disc disease and were published until April 30, 2015 were acquired through a comprehensive search in various databases. A meta-analysis was performed after the methodological qualities of trials were assessed and after data were extracted. Sixteen trials with 881 patients with a short-term follow-up (within 2 years) and a middle-term follow-up (2 to 4 years) were identified. Patients treated with lumbar pedicular dynamic stabilisation systems experienced more significant advantages in terms of operation time, intra-operative blood loss, complications and adjacent segment degeneration/disease development than those treated with lumbar fusion. The two groups did not significantly differ in terms of improvement in Oswestry Disability Index, visual analogue scale scores, satisfaction rate of operation and range of motion of adjacent segments. Lumbar pedicular dynamic stabilisation systems is superior to lumbar fusion to some extent, although some of its advantages have yet to be verified and compared with those of lumbar fusion. However, the two interventions were not significantly different in terms of relief in symptoms, functional recovery and motion preservation. Thus, lumbar pedicular dynamic stabilisation systems is recommended for its safety. A prudent attitude is necessary to choose between these interventions on the basis of effectiveness and changes in adjacent segments before a large-scale and long-term follow-up study can be performed.