Τρίτη 12 Οκτωβρίου 2021

miR‐29a‐3p promotes migration and invasion in ameloblastoma via Wnt/β‐catenin signaling by targeting catenin beta interacting protein 1

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Abstract

Background

Ameloblastoma (AB) is a common epithelial odontogenic tumor. The Wnt/β-catenin pathway has been found to be related to AB invasion.

Methods

The alteration expression of microRNAs (miRNAs) and messenger RNAs (mRNAs) was performed by miRNA and mRNA microarray analysis and validated by quantitative real-time polymerase chain reaction (RT-PCR). The effects of miR-29a-3p on migration and invasion in AB cells were evaluated by a transwell assay. Bioinformatic prediction was conducted using the miRSystem and validated by quantitative RT-PCR, western blot, and a luciferase reporter assay.

Results

miR-29a-3p was overexpressed in AB tissues, which promoted the migration and invasion of AB cells in vitro. Catenin beta interacting protein 1 (CTNNBIP1), a negative regulator of the Wnt/β-catenin pathway, was predicted to be a target of miR-29a-3p. miR-29a-3p inhibited the expression of CTNNBIP1 and promoted the expression of the downstream molecules of the Wnt/β-catenin pathway.

Conclusions

miR-29a-3p promoted migration and invasion in AB via Wnt/β-catenin signaling by targeting CTNNBIP1.

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Δευτέρα 11 Οκτωβρίου 2021

Autologous reconstructions are associated with greater overall medium-term care costs than implant-based reconstructions in the Finnish healthcare system: A retrospective interim case-control cohort study

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J Plast Reconstr Aesthet Surg. 2021 Sep 17:S1748-6815(21)00407-1. doi: 10.1016/j.bjps.2021.08.020. Online ahead of print.

ABSTRACT

PURPOSE: Previous studies have mainly reported the short-term costs of different reconstruction techniques. Revision operations may increase costs in longer follow-up. Authors report medium-term data on different reconstruction methods. We hypothesised that the reconstruction method would affect not only the duration of reconstruction process but also total costs.

METHODS: The reconstruction database was reviewed from 2008 to 2019. Women with autologous (deep inferior epigastric perforator, transverse musculocutaneous gracilis and latissimus dorsi [LD] without implant) and implant-based (implant and LD with implant) reconstructions were included. Variables evaluated included age, body mass index, smoking, comorbidities, radiotherapy, complications and readmissions. Risk factors for multiple revision s urgeries were analysed. Time to definitive reconstruction and related costs were also calculated.

RESULTS: In total, 591 patients with autologous reconstructions and 202 with implant-based reconstructions were included. The median follow-up time was 73 months. Definitive reconstruction was obtained in 443 days in implant-based reconstructions and in 403 days in autologous reconstructions (P = 0.050). Independent risk factors for multiple surgeries were younger age (P < 0.001) and comorbidity (P = 0.008). No statistically significant difference was observed in the rate of overall surgical procedures (P = 0.098), but implant-based reconstructions were more commonly associated with two or more planned operations (P = 0.008). Autologous reconstructions were associated with greater total cost ($22 052 vs. $18 329, P < 0.001).

CONCLUSIONS: This review of reconstructions over a 12-year study period revealed that autologous reconstructions are associated with greater overa ll costs, but there is no statistically significant difference in reconstruction time or rate of surgical procedures. However, a full cost assessment between reconstructive techniques requires a much longer follow-up period.

PMID:34627717 | DOI:10.1016/j.bjps.2021.08.020

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Second dorsal metacarpal artery-based index finger dorsal island flap for the management of thumb defects

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J Plast Reconstr Aesthet Surg. 2021 Sep 17:S1748-6815(21)00403-4. doi: 10.1016/j.bjps.2021.08.016. Online ahead of print.

ABSTRACT

Index finger dorsal island flaps were frequently utilized by hand surgeons to reconstruct thumb defects. However, the blood supply of the traditional index finger dorsal island flap comes from the first dorsal metacarpal artery, which has a smaller diameter, more anatomical variation, and can be injured in conjunction with thumb injuries. Therefore, we design an alternative index finger dorsal island flap based on the second dorsal metacarpal artery to treat thumb skin defects. From August 2015 to October 2018, we used the index finger dorsal island flaps with the second dorsal metacarpal artery to treat 11 patients with thumb skin defects. All the flaps and skin grafts survived completely without complications. At the last follow-up, the mean 2PD of the flap was 6.4 mm (45.5% for excellent, 54.5% for good) , the mean ROM of the injured thumbs was 115.9° (72.7% for excellent, 27.3% for good), and the mean cosmetics score was 8.6. Our results demonstrate that the index finger dorsal island flap with the second dorsal metacarpal artery is suitable for the reconstruction of thumb skin defects. The flap has an excellent survival rate and good coverage with satisfactory results and represents a promising treatment for the selected patients. Level of Evidence: Therapeutic, level IV.

PMID:34627716 | DOI:10.1016/j.bjps.2021.08.016

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Treatment modalities, adverse events, and survival outcomes in older patients with head and neck squamous cell carcinoma

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Abstract

Background

Chemoradiation with curative intent in older adults with locally advanced head and neck squamous cell carcinoma (HNSCC) has been a challenge, because of its potential toxicities.

Methods

We selected primary HNSCC cases from the SEER-Medicare linked database, assessed overall survival (OS) and adverse events and their associations with different treatments, across four age groups including the youngest (66–69 years) and the oldest (≥80 years).

Results

Better OS was associated with chemoradiation compared to radiation alone, not only in all patients (N = 5879) (hazard ratio [HR] = 0.82, p < 0.001), but also in the oldest group (N = 1380) (HR = 0.77, p = 0.006) in whom the adverse events rates were not higher than those in the youngest (N = 1562); more of the latter (26%–30%) than the former (14%–19%) received chemoradiation, regardless of their comorbidity indices.

Conclusions

Our findings provide evidence that patients' characteristics, other than chronological age, should be equally considered in selecting the best therapy for older patients with HNSCC.

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Primary Ewing's sarcoma with orbit involvement: Survival and visual outcomes after eye‐sparing multidisciplinary management in eight patients

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Abstract

Background

To describe the clinical presentation, treatment, and overall prognosis in eight patients with primary Ewing's sarcoma (ES) involving the orbit.

Methods

A retrospective interventional study of all biopsy-proven cases of primary ES involving the orbit was done.

Results

There were seven males and one female with a median age of 14 years. Imaging showed osseous involvement in all eight cases with extraorbital extension in four. Complete tumor resection was done in four, partial resection in three, and biopsy followed by sinus surgery in one. EWSR1 gene rearrangement analysis was done to confirm diagnosis. All patients received multidrug systemic chemotherapy and seven patients received adjuvant radiotherapy. Eye salvage was achieved in all patients. At a mean follow-up duration of 52.63 months, seven patients were doing well with no evidence of disease.

Conclusions

ES involving the orbit is sensitive to chemotherapy and radiation. Aggressive multimodality treatment can help salvage the globe and improve overall survival.

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Renal tumor biomarkers (Review)

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Exp Ther Med. 2021 Nov;22(5):1297. doi: 10.3892/etm.2021.10732. Epub 2021 Sep 14.

ABSTRACT

One of the most common types of cancer worldwide (9th most commonly diagnosed) is renal cell carcinoma (RCC). It is more common in developed countries and it usually develops in individuals between 60 and 70 years of age. The earlier the disease is identified, the lower the morbidity. Therefore molecular markers that exist in blood and urine may be used for earlier detection and diagnosis but also for the follow-up of the patient after treatment, whether surgical or oncological. The trend is to analyze the gene and protein expression as they constitute a source for new biomarkers. These markers are promising but in clinical practice regarding disease management, they are rarely used. Biological markers can be employed in many tumors because they can identify the prognostic value for individual treatment. However, markers for RCC are not validated , and their analysis is currently under investigation. Previous findings have demonstrated that the metastatic potential of RCC can be predicted using the biological features of the tumor cell. It is believed that the transformation from epithelial to mesenchymal phenotype gives the tumor cell the ability to metastasize. The purpose of this review was to identify the most valuable tumor markers that can be clinically used for the prognosis, treatment and follow-up of patients with renal tumors.

PMID:34630652 | PMC:PMC8461509 | DOI:10.3892/etm.2021.10732

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miR-489-3p overexpression inhibits lipopolysaccharide-induced nucleus pulposus cell apoptosis, inflammation and extracellular matrix degradation via targeting Toll-like receptor 4

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Exp Ther Med. 2021 Nov;22(5):1323. doi: 10.3892/etm.2021.10758. Epub 2021 Sep 20.

ABSTRACT

Intervertebral disc degeneration (IDD) is a common disease with a high morbidity rate, which results in a significant deterioration in the quality of life of patients. MicroRNAs (miRNAs/miRs) are a class of endogenous small non-coding RNAs that influence target genes and serve critical roles in numerous biological processes. However, the role of miR-489-3p in lumbar disc degeneration is yet to be elucidated. In the present study, human NP cells were treated with 10 ng/ml lipopolysaccharide (LPS) for 24 h to investigate the role of miR-489-3p in IDD in an in vitro model. Reverse transcription-quantitative (RT-q)PCR was performed to determine the expression levels of miR-489-3p. Then, the TargetScan database was used to predict the potential binding sites between miR-489-3p and Toll-like receptor (TLR)4, and a dual-luciferase reporter assay was performed to verify the findings. Subsequently, RT-qPCR and western blotting were used to analyze the expression levels of TLR4. In addition, human nucleus pulposus (NP) cells were transfected with a miR-489-3p mimic and TLR4 overexpression plasmid to study the effects of miR-489-3p on LPS-induced human NP cells. Cell apoptosis and cell viability were also determined using flow cytometry and MTT assays, respectively. Finally, ELISAs were performed to analyze the levels of inflammatory factors. The expression levels of miR-489-3p were discovered to be downregulated in LPS-treated human NP cells. In addition, TLR4 was revealed to be a direct target gene of miR-489-3p, and its expression levels were upregulated in LPS-treated human NP cells. miR-489-3p was found to inhibit the LPS-induced decreases in cell viability and increases in apoptosis, and the concentration of inflammatory cytokines. Furthermore, miR-489-3p suppressed the LPS-induced decreases in extracellular matrix deposi tion via decreasing the expression levels of aggrecan and collagen type II in human NP cells. Finally, the results revealed that miR-489-3p inhibited the LPS-induced activation of the NF-κB signaling pathway in human NP cells. Conversely, all of the effects of miR-489-3p on LPS-induced human NP cells were reversed by the TLR4 overexpression plasmid. These findings suggested that miR-489-3p may represent a novel therapeutic target for the treatment of IDD.

PMID:34630677 | PMC:PMC8495590 | DOI:10.3892/etm.2021.10758

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