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Anteromedial coronoid fractures (AMCFs) are associated with persistent elbow instability and post-traumatic arthritis if managed incorrectly. It is unclear exactly which AMCFs require surgical intervention and how to make this decision. The aims of this study were to report outcomes of AMCFs managed using a protocol based on reproduction of instability using radiographic and clinical testingand to ascertain a threshold size of AMCF associated with instability.

Forty-three AMCFs were studied. Thirty-two patientsformed the primary study group (group A). All were treated using a protocol in which the decision to perform coronoid fixation was based on the presence of radiographic or clinical evidence of instability. Functional outcomes (Oxford Elbow Score), radiographic outcomes, complications, and reoperations were collected, and a receiver operating characteristic curve analysis was performed to assess the optimal coronoid fracture height to recommend coronoid fixation. The results were compared with a histup B and none in group A. The receiver operating characteristic curve analysis demonstrated 6.5 mm to be the optimal AMCF size for surgery to prevent persistent instability.

Patients treated according to a protocol in which preoperative reproduction of instability determined the degree of surgical intervention had good clinical and radiographic outcomes. Our study demonstrated that AMCFs > 6.5 mm are likely to be more unstable and require intervention. If these principles are followed, a specifically defined subset of AMCFs can be treated nonsurgically without adverse outcomes.

6.5 mm are likely to be more unstable and require intervention. If these principles are followed, a specifically defined subset of AMCFs can be treated nonsurgically without adverse outcomes.

Glenoid component loosening is a common cause of failure after anatomic total shoulder arthroplasty. Prior studies of all-polyethyleneglenoid implants with hybrid fixation did not show early glenoid radiolucency to be clinically significant. The purpose of this study was to determine the clinical significance of progression of radiolucency around the central peg of the glenoid component.

We identified 73 shoulders that underwent primary anatomic total shoulder arthroplasty between January 1995 and May 2015 for osteoarthritis with an all-polyethylene pegged glenoid, with a minimum follow-up interval of 2 years between early and late follow-up. Demographic, radiographic (central-peg osteolysis [CPO] and central-peg grading [CPG]), and outcome variables comprising the Penn Shoulder Score (PSS) and revision surgery were collected. Clinical failure was defined as a PSS decrease >11.4 points (ie, PSS failure) or revision surgery.

The average patient age at surgery was 65 ± 7 years, and 63% of patients were men. The median initial follow-up period was 14 months (interquartile range, 12-25 months), and the final median follow-up period was 56 months (interquartile range, 47-69 months). Revision surgical procedures were performed in 4 patients, and 17 PSS failures occurred. We found that CPO at final follow-up, CPGprogression, and worse PSS at follow-up were associated with revision surgery (P < .05). We also found younger age at surgery, CPO at final follow-up, CPG progression, and greater glenoid component retroversion at final follow-up to be associated with clinical failure (PSS failure or revision surgery) (P < .05). Multivariate analysis found only CPG progression to be associated with clinical failure (P < .001).

CPO and CPG progression were associated with clinical failure, defined as decreasing clinical outcome scores or revision surgery.

CPO and CPG progression were associated with clinical failure, defined as decreasing clinical outcome scores or revision surgery.This study explored the regulatory role of microRNA-1271 (miR-1271) in glioblastoma multiforme (GBM) proliferation and invasion via calcium/calmodulin-dependent protein kinase 2 (CaMKK2). MiR-1271 and CaMKK2 expression were quantified in normal human astrocyte cells, GBM cell lines, and low- and high-grade glioma tissues. MKI67 expression in GBM cells was measured using quantitative real-time polymerase chain reaction. The target relationship between miR-1271 and the CAMKK2 gene was confirmed using the luciferase reporter assay. MTT and Transwell assays were used to analyze the role of miR-1271 and CAMKK2 in cell proliferation and invasion. Finally, CaMKK2 expression and AKT phosphorylation were detected by western blotting. MiR-1271 was significantly downregulated in high-grade glioma tissues and GBM cell lines. Conversely, CAMKK2 mRNA expression was upregulated in high-grade glioma tissues and GBM cell lines. check details We observed that miR-1271 directly targeted the 3′-untranslated region of CAMKK2, indicating an inverse relationship with miR-1271. Overexpressing miR-1271 inhibited GBM cell proliferation and invasion, whereas inhibiting miR-1271 increased cell proliferation and invasion. Silencing CAMKK2 expression also inhibited GBM cell proliferation and invasion. Furthermore, overexpressing miR-1271 inhibited AKT phosphorylation and MKI67 mRNA expression by targeting CAMKK2. These results indicate that miR-1271 regulates GBM cell proliferation and invasion, and that these effects involve directly targeting the CAMKK2 gene. Therefore, miR-1271 may serve as a new therapeutic target for developing GBM treatments.The Penaeus stylirostris densovirus (PstDNV) is a major virus of shrimps that severely harms the shrimp farming industry. Peritrophin is a peritrophic membrane protein with chitin binding activity. To examine the roles of peritrophin in viral infection, we used yeast two-hybrid to analyze the interaction between the Pacific white shrimp (Litopenaeus vannamei) peritrophin and PstDNV proteins (CP, NS1 and NS2). The yeast two-hybrid results showed that NS1 and peritrophin had an interaction, CP and peritrophin had an interaction as well, and NS2 had no interaction with peritrophin. We validated the interactions with GST pull-down assays. We then conducted RNA interference and qRT-PCR. The results showed that when pre-injection of dsRNA-peritrophin, the quantity of PstDNV in the shrimps injected with viruses was significantly lower than in the control group (P less then 0.01), indicating the viral infection was decreased when the peritrophin gene expression was inhibited. The results indicated that peritrophin of L.