A field diagnostic method for rapid and sensitive detection of mpox virus.

The mpox outbreak has subdued with fewer reported cases at the present in high-income countries. It is known that mpox virus (MPXV) infection has been epidemic for more than 50 years in African countries. The ancestral MPXV strain has changed into multiple clades, indicating the ongoing evolution of MPXV, which reflects the historical neglect of mpox in Africa, especially after smallpox eradication, and bestows the danger of more severe mpox epidemics in the future. It is thus imperative to continue the development of mpox diagnostics and treatments so we can be prepared in the event of a new mpox epidemic. In this study, we have developed an MPXV detection tool that leverages the recombinase-aid amplification assay by integrating lateral flow strips (RAA-LF) and one-step sample DNA preparation, with visible readout, no need of laboratory instrument, and ready for field deployment. The detection limit reaches 10 copies per reaction. The performance of our RAA-FL assay in diagnosing mpox clinical samples is on par with that of the quantitative polymerase chain reaction (PCR) assay. Taken together, we have developed a point-of-care RAA-LF method of high accuracy and sensitivity, readily deployable for field detection of MPXV. This diagnostic tool is expected to improve and accelerate field- and self-diagnosis, allow timely isolation and treatment, reduce the spread of MPXV, thus effectively mitigate MPXV outbreak in the future.

Correlation Between the Ultrasonic Size Lesions and the Risk of Central Lymph Node Metastasis in Patients with Papillary Thyroid Microcarcinoma.

Objective: This study aimed to analyze the correlation between the ultrasonic measured size (ULMS) and actual pathological measured size (APMS) of papillary thyroid microcarcinoma (PTMC), and to investigate the association of tumor size with metastatic central lymph nodes (CLNM)." Methods: A total of 500 cases with PTMC (APMS) who underwent surgery between August 2009 and May 2016 were reviewed. Paired t test, multivariable logistic regression and ROC curve were used for analyzing the data. The difference and correlation between the APMS and the ULMS were detected by paired t test. The multivariable logistic regression model and Receiver Operating Characteristic curve (ROC) curve area were used to predict the impact of lesion size of PTMC on the risk of CLNM. Results: The overall actual pathological measured value of specimens was smaller than the ultrasonic measured value (among ULMS PTMC, the average value of difference D was -0.775 mm, 95%CI: -0.839 mm~ -0.712 mm, P = .000). The ultrasonic tumor size (P = .000, OR=1.129, 95%CI: 1.084-1.175) was the risk factor for CLNM. The central lymph node metastasis rate in 500 cases (APMS with ≤ 10 mm) was 37.2%, while 32.6% in 396 cases with ULMS. The CLNM rates of s3 mm-10 mm PTMC single lesions were 20%, 18.18%, 14.89%, 18.18%, 36.73%, 36.36%, 35.29%, and 38.71%, respectively. The metastasis rate of a single lesion≤ 6 mm was significantly lower than that of> 6 mm, which was lower than 20%. The ROC curve indicated that the ULMS was a risk factor for CLNM (optimal threshold of 6.5 mm), 5 or more CLNM (optimal threshold of 6.5 mm), and bilateral CLNM (optimal threshold of 8.5 mm). Conclusion: Ultrasound size is a predictive factor for CLNM in thyroid cancer and that PTMC with a diameter < 6 mm still poses a risk for central metastasis. Prophylactic central dissection is still recommended for PTMC patients, except for those with a single lesion of less than 6 mm in maximum diameter.

Non-intestinal-type adenocarcinoma of the nasal cavity and paranasal sinuses: an analysis of clinical characteristics and prognosis.

BACKGROUND: Non­intestinal adenocarcinoma of the nasal cavity and paranasal sinuses (non­ITAC) is a heterogeneous tumour that has rarely been reported in previous studies. We compared and analysed the symptoms, radiographic and pathological features, treatment methods, and prognosis of patients with low-grade (G1) and high-grade (G3) tumours. METHODS: This was a retrospective study included 22 patients with pathologically confirmed non-ITAC of the nasal cavity and paranasal sinuses who were treated between January 2008 and December 2021 at a single centre. Of these, 11 patients had G1 tumours, and 11 patients had G3 tumours. Clinicopathological features, treatment methods, and survival outcomes were analysed. RESULTS: The median follow-up period was 48.5 months. Nasal congestion was the most common initial symptom, and the nasal cavity was the most frequently involved site. For G1 tumours, the main treatment was simple surgery, 1 and 3­year overall survival (OS) rates were 100 and 88.9%, while the 1 and 3­year local control (LC) rates were 100 and 100%, respectively. For G3 tumours, the main treatments were surgery combined with radiotherapy and/or chemotherapy,1 and 3­year OS rates were 72.7 and 72.7%, while the 1 and 3­year LC rates were 100 and 90.91%, respectively. G3 tumours was associated with significantly shorter overall survival than G1 tumours (P = 0.035). Patients with stage III-IV showed shorter overall survival compared to stage I-II patients (P = 0.035). CONCLUSIONS: Non-ITAC of the nasal cavity and paranasal sinuses may frequently occur in the nasal cavity. The main treatment modality is surgery, supplemented by radiotherapy and chemotherapy. Pathological grade and tumour stage were poor prognostic factors for the disease.

Elucidating the role of FOS in modulating the immune microenvironment through fibroblast and myeloid cell regulation in locoregional recurrent HNSCC.

BACKGROUND: Head and neck squamous cell carcinoma (HNSCC) presents a significant clinical challenge, particularly due to its high propensity for locoregional recurrence. Current research underscores the need to unravel the complex interactions within the tumor microenvironment. This study addresses the critical gap in understanding how FOS modulates the immune landscape in HNSCC, with a focus on its influence on fibroblast and myeloid cell dynamics. METHODS: Employing a comprehensive approach, we analyzed tissue samples from HNSCC patients and adjacent non-cancerous tissues using bulk RNA sequencing complemented by in-depth bioinformatics analyses, including gene ontology (GO), Kyoto encyclopedia of genes and genomes (KEGG) pathway analysis, and immune infiltration assessment. A pivotal aspect of our research involved dissecting single-cell RNA-seq data from GSE234933 to elucidate the cell-type-specific expression of FOS. RESULTS: We found that FOS expression varies significantly in different cell populations in the HNSCC tumor microenvironment, especially in fibroblasts and myeloid cells. This expression difference may reflect the different roles of these cells in tumor progression and their impact on the tumor microenvironment. CONCLUSION: Our results uncover a significant correlation between FOS expression and key immune and hypoxia-related pathways, suggesting its integral role in the tumor microenvironment. These findings not only enhance our understanding of HNSCC pathogenesis but also highlight FOS as a potential therapeutic target. This study marks a significant step towards addressing the urgent need for targeted interventions in HNSCC, particularly in the context of locoregional recurrence.

Risk stratification for radioactive iodine refractoriness using molecular alterations in distant metastatic differentiated thyroid cancer.

Objective: Patients with radioactive iodine-refractory differentiated thyroid cancer (RAIR-DTC) are often diagnosed with delay and constrained to limited treatment options. The correlation between RAI refractoriness and the underlying genetic characteristics has not been extensively studied. Methods: Adult patients with distant metastatic DTC were enrolled and assigned to undergo next-generation sequencing of a customized 26-gene panel (ThyroLead). Patients were classified into RAIR-DTC or non-RAIR groups to determine the differences in clinicopathological and molecular characteristics. Molecular risk stratification (MRS) was constructed based on the association between molecular alterations identified and RAI refractoriness, and the results were classified as high, intermediate or low MRS. Results: A total of 220 patients with distant metastases were included, 63.2% of whom were identified as RAIR-DTC. Genetic alterations were identified in 90% of all the patients, with BRAF (59.7% vs. 17.3%), TERT promoter (43.9% vs. 7.4%), and TP53 mutations (11.5% vs. 3.7%) being more prevalent in the RAIR-DTC group than in the non-RAIR group, except for RET fusions (15.8% vs. 39.5%), which had the opposite pattern. BRAF and TERT promoter are independent predictors of RAIR-DTC, accounting for 67.6% of patients with RAIR-DTC. MRS was strongly associated with RAI refractoriness (P<0.001), with an odds ratio (OR) of high to low MRS of 7.52 [95% confidence interval (95% CI), 3.96-14.28; P<0.001] and an OR of intermediate to low MRS of 3.20 (95% CI, 1.01-10.14; P=0.041). Conclusions: Molecular alterations were associated with RAI refractoriness, with BRAF and TERT promoter mutations being the predominant contributors, followed by TP53 and DICER1 mutations. MRS might serve as a valuable tool for both prognosticating clinical outcomes and directing precision-based therapeutic interventions.

Preoperative prediction of central neck metastasis in patients with clinical T1-2N0 papillary thyroid carcinoma.

BACKGROUND: Central neck metastasis (CNM) is common in patients with papillary thyroid carcinoma (PTC). However, the prediction of CNM risk remains poorly defined, especially for patients with clinically negative lymph nodes. We developed a preoperative clinical nomogram to predict CNM risk in patients with clinical T1-2N0 (cT1-2N0) PTC. METHODS: Data from 436 patients with unifocal cT1-2N0 PTC were available. We analyzed the association between preoperative variables and CNM using univariate and multivariate logistic regression and developed a clinical nomogram based on the multivariate regression model. The nomogram was validated externally using an independent dataset. RESULTS: The CNM rate was 25.5%. Three clinical variables were associated with CNM, including age, gender, and tumor size. We built a CNM nomogram integrating these three variables. It had a poor index of internal discrimination (C-index, 0.655; 95% CI 0.596-0.715) and a poor index of external discrimination (C-index, 0.690; 95% CI 0.611-0.769). CONCLUSIONS: We developed a preoperative nomogram to quantify the risk of CNM in unifocal cT1-2N0 PTC patients. However, our data showed that preoperative clinical parameters were not able to accurately predict the likelihood of CNM. Other variables need to be investigated to improve the prediction capability of this nomogram.

Application of prolonged submental perforator flap to repair the postoperative defect of upper airway malignancy.

OBJECTIVES: To explore the feasibility of making a submental perforator flap distal to the connecting line between the mastoid and the sternoclavicular joint under the guidance of neck-enhanced CT and repairing the postoperative defect of upper airway malignancy. MATERIALS AND METHODS: This study retrospectively analysed 19 cases of upper airway malignant tumours treated in our department from January 2021 to September 2022, including 17 males and 2 females, aged 43-70 years. SITE OF LESIONS: 15 cases were in the laryngopharynx, 2 cases in the nasal cavity and paranasal sinus and 2 cases on the soft palate. All the lesions were malignant and at stages T2-4N0-2M0. SURGICAL METHOD: The extended submental perforator flap (size 22-15 × 6-7 cm) was prefabricated distal to the connecting line between the mastoid and the sternoclavicular joint. After tumour resection, the flap was used to repair the postoperative defect. Fifteen cases of laryngopharyngeal malignant tumours were repaired using the extended submental perforator flap with the vascular pedicle located on the opposite side of the tumour body. Two cases of nasal cavity and paranasal sinus tumours were repaired using the extended submental perforator flap combined with the temporalis muscle flap. The soft palate was completely removed in two patients with soft palate cancer and repaired using the folded extended submental perforator flap. RESULTS: Before the surgery, the reflux vein was observed by neck-enhanced CT, including 12 cases returning to the internal jugular vein and 7 cases to the external jugular vein. All 19 cases in which flaps were used survived, and 1 case had a postoperative infection. All the patients had nasal feeding removed after surgery. The tracheal cannula was removed from the patients with laryngeal preservation, and the pronunciation was satisfactory. Among them, patients with soft palate cancer repair had mild nasal reflux symptoms with smooth breathing. During the follow-up period of 4-24 months, 18 patients had no tumour recurrence or metastasis, and 1 patient had cervical lymph node metastasis. CONCLUSIONS: This study highlights the use of a submental perforator flap distal to the connecting line between the mastoid and the sternoclavicular joint to repair postoperative defects for upper airway malignancy as an innovative surgical approach that provides more tissue and good arteriovenous blood supply to adjacent sites. This method has high clinical value and provides an effective option for repairing postoperative defects of upper airway malignancy.

miR-211-3p enhances induction chemotherapy insensitivity by upregulating CSF2/CCL20/TNF signaling in hypopharyngeal squamous cell carcinoma.

PURPOSE: To investigate the potential mechanisms of miR-211-3p on induction chemotherapy (IC) sensitivity in hypopharyngeal squamous cell carcinoma (HSCC). METHODS: qRT-PCR was assessed to compare the miR-211-3p expression between IC sensitive and insensitive tumor tissues. The MTT assay was performed to analyze cell proliferation and viability to paclitaxel after alteration of miR-211-3p. Flow cytometry assay was conducted to explore cell apoptosis. Transwell assay was used to explore the effect of miR-211-3p on cell migration. Transcriptome sequencing was then performed to select differentially expressed genes (DEGs) after over-expression of miR-211-3p. GO and KEGG enrichment analyses were conducted to annotate DEGs. PPI analysis was conducted to screen candidate genes. The differential expression and survival status of candidate genes were further validated in TCGA-HNSCC data. The single sample GSEA method was used to investigate the association between downstream genes and immune cell infiltration. RESULTS: miR-211-3p was up-regulated in IC insensitive larynx-hypopharyngeal tumor tissues. Over-expression of miR-211-3p promoted cell proliferation and migration, and inhibited apoptosis. The IC50 value of miR-211-3p overexpression (OE) group was significantly higher than negative control (NC) group treated with paclitaxel, suggesting miR-211-3p enhanced IC insensitivity in HSCC. We found 778 DEG after over-expression of miR-211-3p and 11 significant genes were then identified. Finally, colony stimulating factor 2 (CSF2) and C-C motif chemokine ligand 20 (CCL20) were validated to be significantly high expressed and associated with poorer overall survival in head and neck squamous cell carcinoma, which were involved in TNF signaling pathway and then regulated immune cell infiltration. CONCLUSION: The miR-211-3p could promote HSCC progression and upregulate CSF2/CCL20/TNF signaling to promote IC insensitivity in HSCC, which may provide new ideas for HSCC therapy.

Hyper-expression and hypomethylation of TM4SF1 are associated with lymph node metastases in papillary thyroid carcinoma patients.

Lymph node metastases (LNM) are an indicator for recurrence in papillary thyroid carcinoma (PTC) patients. However, prophylactic neck dissection (ND) cannot improve survival or recurrence rate because of increased surgical complications and occult LNM. Biomarkers are needed for the prediction of high-risk of LNM to avoid unnecessary operation and reduce the missed malignant lymph nodules. GEO database was searched for the differentially expressed genes (DEGs) between PTC patients with LNM (N1) and those without LNM (N0), transcriptional and methylation data of DEGs in THCA were examined from databases. The expression and methylation of TM4SF1 in fresh and paraffin tissues of PTC patients were examined by qRT-PCR, IHC, and MSP. TM4SF1 was the only one significantly associated with LNM. UALCAN revealed that TM4SF1 was overexpressed and hypomethylated in LNM patients. MEXPRESS presented a negative correlation between gene expression and promoter methylation of TM4SF1. DEGs were enriched in multiple pathways and the Extracellular Matrix (ECM)-receptor interaction pathway showed the greatest correlation with LNM. IHC and qRT-PCR of tissues demonstrated that the expression of TM4SF1 in the N1 group was 4.5-fold higher than that in the N0 group (p<0.05). MSP exhibited that the positive rate of aberrant promoter methylation of TM4SF1 was 8.38% in N1 and 66.7% in N0 group (p<0.05). Hyper-expression and hypomethylation of TM4SF1 are associated with lymph node metastases in PTC patients.

Transcriptome Analysis Identified 2 New lncRNAs Associated with the Metastasis of Papillary Thyroid Carcinoma.

INTRODUCTION: Papillary thyroid microcarcinoma (PTMC) is a specific subgroup of papillary thyroid carcinoma and defined with the dimension ≤1 cm by the WHO. Although it shows a relatively high 10-year livability, the metastasis of PTMC into other tissues and organs seriously affects the daily life of patients with relatively high mortality. Therefore, the genetic basis for the metastasis of PTMC needs to be explored for effective therapeutic targets. Here, we conducted a series of comparative analysis of the transcriptional expression profile between PTMC patients with and without lymph node metastasis. METHODS: Gene expression profile and gene function were analyzed using RNA extracted from pathological tissues of 12 patients with PTMC, and the core biomarkers closely related to its metastasis were identified. RESULTS: Our results showed that 7,507 genes and 42 RNAs showed remarkably different expression patterns. More sophisticated analysis showed that the high expression of 2 lncRNAs (T077499 and T004533) resulted in the metastasis of PTMC, which suggests that the expression pattern of the 2 lncRNAs may act as a potential biomarker for pathogenesis and prognosis of PTMC metastasis. CONCLUSION: Our findings preliminarily reveal the molecular mechanisms for PTMC metastasis, which will provide vital reference for subsequent studies about the genetic basis and molecular targeted therapy for PTMC metastasis.

Silencing long non-coding RNA DLX6-AS1 or restoring microRNA-193b-3p enhances thyroid carcinoma cell autophagy and apoptosis via depressing HOXA1.

Long non-coding RNA DLX6 antisense RNA 1 (DLX6-AS1) lists a critical position in thyroid carcinoma (TC) development. However, the overall comprehension about DLX6-AS1, microRNA (miR)-193b-3p and homeobox A1 (HOXA1) in TC is not thoroughly enough. Concerning to this, this work is pivoted on DLX6-AS1/miR-193b-3p/HOXA1 axis in TC cell growth and autophagy. TC tissues and adjacent normal thyroid tissues were collected, in which expression of DLX6-AS1, miR-193b-3p and HOXA1 was tested, together with their interactions. TC cells were transfected with DLX6-AS1/miR-193b-3p-related oligonucleotides or plasmids to test cell growth and autophagy. Tumorigenesis in nude mice was observed. DLX6-AS1 and HOXA1 were up-regulated, and miR-193b-3p was down-regulated in TC. Depleted DLX6-AS1 or restored miR-193b-3p disturbed cell growth and promoted autophagy. DLX6-AS1 targeted miR-193b-3p and positively regulated HOXA1. miR-193b-3p inhibition mitigated the impaired tumorigenesis induced by down-regulated DLX6-AS1. Tumorigenesis in nude mice was consistent with that in cells. It is clear that DLX6-AS1 depletion hinders TC cell growth and promotes autophagy via up-regulating miR-193b-3p and down-regulating HOXA1.

High expression of novel biomarker KRT16P3 promotes the progression of tongue squamous cell carcinoma and predicts poor prognosis.

BACKGROUND: Overexpression of long non-coding RNAs (lncRNAs) reveals the abnormal pathological processes in many human cancers. KRT16P3, a novel overexpressed lncRNA in tongue squamous cell carcinoma (TSCC), was identified by previous lncRNA microarrays. However, the role of KRT16P3 in TSCC is not clear. METHODS: Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the expression of KRT16P3 in TSCC tissues and cells. Next, the relationships between KRT16P3 and the clinical significance of TSCC patients were analyzed. Additionally, Cell Counting Kit-8, 5-Bromo-2-deoxyuridine (BrdU) incorporation assay, cell colony formation assay, flow cytometry cell apoptosis analysis, scratch wound healing assay, transwell invasion assay were used to explore the biological function of KRT16P3. Western blot and qRT-PCR were used to determine the expression of epithelial-mesenchymal transition (EMT) markers. The pathway changes after KRT16P3 knockdown were detected by Western blot. RESULTS: We found KRT16P3 expression is significantly upregulated in TSCC tissues and positively associated with advanced clinicopathological features of TSCC patients, and it may serve as a poor prognostic factor. Functionally, KRT16P3 knockdown inhibits proliferation, migration, invasion and promotes apoptosis of TSCC cells. Furthermore, we also revealed that KRT16P3 knockdown suppresses EMT and JAK2/STAT3 signaling pathway. CONCLUSION: Our results validated that KRT16P3 can modulate the malignant progression, EMT process, and JAK2/STAT3 signaling pathway of TSCC, which might also serve as a novel prognostic biomarker and an attractive target for TSCC patients.

Regional pedicled flaps in prevention and repair of pharyngocutaneous fistulas.

BACKGROUND: Pharyngocutaneous fistula (PCF) is a common complication after laryngopharyngeal surgery. It presents incredible difficulties to both doctors and patients and can lead to prolonged hospitalization. OBJECTIVE: To analyze the pros and cons of the pedicled skin flap in the prevention and repair of PCF and put forward the authors' views and experience about the selection and application of flaps for the treatment of PCF. METHODS: A literature review of pedicled flap application in PCF was carried out. RESULTS: Based on the analysis of the characteristics of the pedicled flap in PCF treatment, the advantages and disadvantages are compared. RESULTS: In the literature, the pectoralis major myocutaneous flap is the most widely used regional pedicled flap for PCF. Many other flaps can be used to prevent and treat PCF. Each kind of pedicled flap has advantages and limitations. This plays a role in the individualized selection and design of PCF to maximize the benefits of patients. CONCLUSIONS: Taking unity of function, aesthetics, and proficiency of operators into account, choosing the appropriate flap to repair PCF can reduce the occurrence rate of PCF and improve the patient's quality of life.

A novel seven-gene panel predicts the sensitivity and prognosis of head and neck squamous cell carcinoma treated with platinum-based radio(chemo)therapy.

PURPOSE: The aim of the study is to identify a reliable gene panel to predict the prognosis of HNSCC patients by integrated genomic analysis. METHODS: Co-expression gene networks were constructed by WGCNA using GSE113282 gene expression profile. The biological functional investigation was performed by GO and KEGG function enrichment analysis. The hub gene module was screened by PPI. The prognostic gene panel was established by Lasso regression analysis, and further progression-free survival (PFS) analysis was validated by Kaplan-Meier survival analysis using GSE102995 data. RESULTS: We identified 195 genes associated with the overall survival (OS) status (correlation coefficients: - 0.42, and p value: 2e-05) by WGCNA. These genes were enriched in immune-related cytokines and pathways analyzed by GO and KEGG. Among the 195 genes, the module (42 genes) with the highest score was screened by PPI. A novel seven-gene predictive panel (CD19, CD40LG, CD5, CXCR6, FPR2, NCAM1, and SELL) was established by Lasso regression analysis, and the area under ROC curve (AUC) for 3-year OS status was 0.8298 and 0.7571, respectively, in the training set and the test set. The PFS time of the low-risk patients was significantly longer than the high-risk patients (p < 0.0001; log-rank test) by further validation using GSE102995 data. CONCLUSION: The seven-gene panel may serve as a reliable predictive tool for HNSCC patients treated with platinum-based radio (chemo) therapy, and may be potential therapeutic targets for HNSCC patients.

Induction chemotherapy for the individualised treatment of hypopharyngeal carcinoma with cervical oesophageal invasion: a retrospective cohort study.

BACKGROUND: This study aimed to evaluate the potential of induction chemotherapy as an indicator of the management of advanced hypopharyngeal carcinoma with cervical oesophageal invasion. METHODS: Sixty-eight patients admitted to our hospital between February 2003 and November 2016 with stage IVB hypopharyngeal carcinoma with cervical oesophageal invasion were retrospectively analysed. Patients were divided into two groups according to the treatment they selected following an explanation of the different treatments available. Patients in group A received induction chemotherapy and had (1) complete/partial remission following chemotherapy and radiotherapy/concurrent chemoradiotherapy or (2) stable disease following chemotherapy and surgery. Patients in group B underwent surgery followed by adjuvant radiotherapy/concurrent chemoradiotherapy. Survival analyses were performed using the Kaplan-Meier method, and differences between the groups were evaluated using the log-rank test. Laryngeal and oesophageal retention rates were compared using the cross-tabulation test. RESULTS: The 3- and 5-year overall survival rates were 22.86% and 11.43% in group A and 24.25% and 6.06% in group B, respectively (all P > 0.05). The laryngeal and oesophageal retention rates were 40.0% and 74.3% in group A and 0.0% and 27.3% in group B, respectively (all P < 0.01). There was no statistically significant difference in the incidence of post-operative complications between the two groups (group A 8.6%, group B 12.1%; P > 0.05). CONCLUSIONS: Induction chemotherapy may be an appropriate first choice to ensure laryngeal and oesophageal preservation in the individualised treatment of advanced hypopharyngeal carcinoma with cervical oesophageal invasion.

Study of the Ultrasound Appearance of the Normal Parathyroid Using an Intraoperative Procedure.

OBJECTIVES: This study was designed to confirm the echogenicity of normal parathyroid glands using intraoperative ultrasound (US). METHODS: Between October 2015 and January 2016, normal parathyroid glands were examined with an intraoperative US transducer during thyroidectomy procedures in 13 patients with thyroid disease. According to the findings from intraoperative US, routine percutaneous US of normal parathyroid glands was performed in a group of adults. On the basis of previous information on normal parathyroid echogenicity, a series of parathyroid diseases that were proved by surgery and histopathologic analyses were retrospectively reviewed. The presence of residual normal parathyroid in the lesion on US imaging, which was defined as the residual parathyroid sign in this study, was reviewed and correlated with histopathologic results. RESULTS: In the intraoperative US group, 23 parathyroid glands were scanned intraoperatively, and 21 (91.3%) were hyperechoic, homogeneous in texture, and oval. In the routine percutaneous US group, 106 parathyroid glands were found in total, and 96 (90.5%) of the glands had hyperechoic and homogeneous echogenicity, with 75 (70.8%) being oval. In the review of parathyroid diseases, 33 parathyroid glands in 30 cases were reviewed, with a positive residual parathyroid sign in 7 (21.2%) parathyroid glands, presenting with a hyperechoic rim in the margin, and 4 of them (12.1%) were confirmed by histopathologic results. CONCLUSIONS: The normal parathyroid had hyperechoic echogenicity on both intraoperative and percutaneous US imaging. Residual tissue of parathyroid glands can also be observed in some parathyroid abnormalities with an echogenic appearance on US imaging and confirmed by histopathologic results.

LncRNA MIR31HG targets HIF1A and P21 to facilitate head and neck cancer cell proliferation and tumorigenesis by promoting cell-cycle progression.

LncRNAs are involved in the initiation and progression of cancer. However, the molecular mechanism and diverse clinical prognosis of MIR31HG in head and neck squamous cell carcinoma (HNSCC) are still unclear. Our previous microarray analysis showed that lncRNA MIR31HG interacted with HIF1A may play an oncogenic role in laryngeal squamous cell cancer (LSCC). To determine whether lncRNA MIR31HG served as a poor prognosis factor and targeted HIF1A to facilitate cell proliferation and tumorigenesis in human HNSCC, we found MIR31HG and HIF1A were overexpressed in LSCC, MIR31HG overexpression or co-expression of HIF1A-positive and p21-negative could serve as a poor prognostic factor for LSCC patients. We further confirmed that MIR31HG promoted cell proliferation, cell cycle progression, and inhibited cell apoptosis in vitro and in vivo. The ingenuity pathway analysis and Western blot indicated that MIR31HG regulated cell cycle progression via HIF1A and p21 in HNSCC. The current results provide evidences for the role of MIR31HG in promoting HNSCC progression and identify MIR31HG as a prognostic biomarker and putative therapeutic target in HNSCC.

The identification of induction chemo-sensitivity genes of laryngeal squamous cell carcinoma and their clinical utilization.

PURPOSE: To identify potential molecular markers for induction chemotherapy of Laryngeal squamous cell carcinoma (LSCC). METHODS: Differently expressed genes between chemo-sensitive group (seven cases) and chemo-insensitive (five cases) group after induction chemotherapy by TPF were identified by microarrays. Bayes network and Random forest analyses were employed to identify core genes for induction chemotherapy. The diagnostic value of these core genes was also evaluated by ROC analysis. RESULTS: Six genes (SPP1, FOLR3, KYNU, LOC653219, ADH7 and XAGE1A) are highly expressed, while seven gene (CADM1, NDUFA4L2, CCND2, RARRES3, ERAP2, LYD6 and CNTNAP2) present significantly low expression. Among these genes, genes CADM1, FOLR3, KYNU, and CNTNAP2 are core candidates for LSCC chemo-sensitivity. And that the low expression of CADM1 may result in chemo-sensitivity, which leads to high expression of gene FOLR3 and KYNU, and low expression of gene CNTNAP2. Besides, ROC analysis shows that these four genes exhibit effective diagnostic value for induction chemo-sensitivity. CONCLUSIONS: CADM1 may be a potential molecular marker for LSCC induction chemotherapy, while CADM1, FOLR3, KYNU, and CNTNAP2 may provide essential guidance for LSCC diagnosis and follow-up treatment strategies.

Clinicopathologic and prognostic factors in adenoid cystic carcinoma of head and neck minor salivary glands: A clinical analysis of 130 cases.

PURPOSE: This study was to investigate clinicopathologic characteristics and prognostic factors in adenoid cystic carcinoma of head and neck minor salivary glands. MATERIALS AND METHODS: We conducted a retrospective review of 130 patients with adenoid cystic carcinoma of head and neck minor salivary glands that were evaluated between 2000 and 2013 in Beijng Tongren Hospital. RESULTS: Five-year overall survival and disease-free survival rates were 80.8% and 55.6%. Local recurrence rate was 40%, regional recurrence 3.8%, and distant metastasis was 28.5%. On univariate analysis, solid histological subtype, perineural invasion, positive surgical margins and advanced stages were found to be poor prognostic indicators. On multivariate analysis, solid histological subtype and positive surgical margins were significant prognostic factors of worse overall survival. CONCLUSIONS: Solid histological subtype and positive surgical margins were the most important predictors of poor outcome in adenoid cystic carcinoma of minor salivary glands. Surgery with postoperative radiation were recommended treatment and offered durable local control.

Minichromosome maintenance (MCM) protein 4 overexpression is a potential prognostic marker for laryngeal squamous cell carcinoma.

PURPOSE: The minichromosomal maintenance (MCM) proteins are involved in the initiation and DNA replication. The role of MCM4 remains to be elucidated. The purpose of this study was to investigate the effects of MCM4 in laryngeal squamous cell carcinoma (LSCC) cell growth and apoptosis. METHODS: LSCC cell line UMSCC 5 was used in this study. The small interfering RNA (siRNA) of MCM 4 gene was used to identify the effects of MCM4 on the proliferation and apoptosis using methylimidazole tetrazolium (MTT) assay and flow-cytometry, respectively. Confirmed LSCC and adjacent non-tumor tissues were collected from 34 patients who were willing to participate in the study, from 2010 through 2015, from 163 patients undergoing treatment in the Department of Otorhinolaryngology/Head and Neck Surgery of Beijing Tongren Hospital in Capital Medical University of P.R. China. Immunohistochemical staining of MCM4 expression in the resected tissues was performed to analyze the correlation between its expression and the clinicopathological characteristics. RESULTS: The results showed that siRNA of MCM4 could significantly inhibit LSCC cell line UMSCC 5 proliferation and induce apoptosis. MCM4 mRNA was higher expressed in carcinoma tissues than in adjacent normal tissues. MCM4 expression was correlated with male gender, smoking history and poor differentiation. CONCLUSIONS: We noticed a significant role for MCM4 overexpression in human LSCC tissues and their corresponding adjacent non-neoplastic tissues and found that siRNA of MCM4 can significantly decrease the proliferation of cancer cells. It is suggested that MCM4 profiling could potentially be used to predict response to treatment and prognosis in LSCC.