OBJECTIVE: To investigate the myeloid differentiation factor 88 (MyD88) expression in laryngeal carcinoma and its clinical significance. METHOD: Fifty-one patients with laryngeal carcinoma were collected, and all patients were confirmed by pathological diagnosis results. The expression of MyD88 protein was detected by immunohistochemical method in laryngeal cancer and its adjacent tissues to investigate the correlation among MyD88 expression, clinicopathological characteristics and prognosis of patients. RESULT: The positive expression rate of MyD88 in laryngeal cancer tissues was 68.6%, significantly higher than that in normal tissues adjacent to carcinoma of which positive expression rate was 11.8%; MyD88 positive rate had nothing to do with laryngeal cancer patients age, sex, differentiation and tumour location (all P > 0.05), but correlated with clinical stage (P < 0.01) and lymph node metastasis (P < 0.05). In addition, the study also found that the expression of MyD88 quantity was inversely proportional with the five-year survival rate. The survival rate of patients with higher expression of MyD88 was significantly lower than that of patients with lower expression (P < 0.05). CONCLUSION MyD88 may be an important participant in the pathogenesis of laryngeal carcinoma, MyD88 targeted therapy may improve the prognosis of patients with laryngeal cancer.
Humans ; Laryngeal Neoplasms ; metabolism ; pathology ; Lymphatic Metastasis ; Myeloid Differentiation Factor 88 ; metabolism ; Prognosis ; Survival Rate

OBJECTIVE: To investigate the diagnosis applying effects of ocular vestibular evoked myogenic potentials(oVEMP) in peripheral BPPV disease. METHOD: During September 2012 to January 2015, we selected 80 healthy people in our hospital medical center as the control group, choose the same period of primary benign paroxysmal positional vertigo as the observation group of 80 patients. Two groups were carried out fully functional auditory evoked potential analysis, determination of oVEMP and cervical vestibular evoked myogenic potentials (cVEMP) anomaly amplitude threshold, P1 latencies, N1 incubation period. RESULT: The cVEMP abnormal rate in the observation group was 28.8%, the oVEMP abnormal rate was 38.8%, while cVEMP and oVEMP abnormal rates in the control group was 1.3% and 2.5% respectively that compared to significant differences between the two groups (P < 0.05). The oVEMP test amplitude in the observation group was (5.98 ± 2.15) µv, the N1 incubation period was (10.03 ± 0.76)ms, while the control group were (4.09 ± 2.11)µv and (11.67 ± 0.78) ms that compared difference were statistically significant (P < 0.05). The cVEMP test amplitude in the observation group was (154.8 ± 43.9)2 µv, while the control group was (180.49 ± 45.34)µv, compared the difference was statistically significant (P < 0.05). CONCLUSION Paroxysmal positional vertigo patients ocular vestibular evoked myogenic potentials abnormal rate is relatively high, the utricle dysfunction for more severe than the balloon can be the subject of an objective function of the ear stone judgment, judgment in favor of the disease.
Benign Paroxysmal Positional Vertigo ; diagnosis ; Case-Control Studies ; Humans ; Saccule and Utricle ; physiopathology ; Vestibular Evoked Myogenic Potentials

Objective To compare the efficacy and safety of intravenous infusion and intratympanic injection of dexamethasone in the treatment of sudden deafness (SD) in middle-aged and elderly patients. Methods A total of 115 middle-aged and elderly SD patients in the hospital from July 2018 to November 2023 were randomly divided into group A (n=57) and group B (n=58). Group A received intravenous infusion of dexamethasone, while group B received intratympanic injection of dexamethasone. The symptom improvement time (tinnitus disappearance time, vomiting disappearance time, vertigo disappearance time, and hearing recovery time), hearing thresholds (high and low frequencies), sleep quality[the Pittsburgh Sleep Quality Index (PSQI)], vascular endothelial function [nitric oxide (NO), lipid peroxide (LPO) and superoxide dismutase (SOD)], clinical efficacy, and adverse reactions (transient vertigo, mild ear pain, rash) were compared between the two groups. Results The tinnitus disappearance time, vomiting disappearance time, vertigo disappearance time, and hearing recovery time in group B were significantly shorter than those in group A (P < 0.05). The hearing thresholds at high and low frequencies after treatment in both groups were significantly lower than those before treatment, and the hearing thresholds in group B were significantly lower than those in group A after treatment (P < 0.05). The PSQI scores after treatment in both groups were significantly lower than those before treatment, and the PSQI score in group B was significantly lower than that in group A after treatment (P < 0.05). After treatment, NO and SOD in group B were significantly higher than those in group A, while LPO was significantly lower than that in group A (P < 0.05). The total effective rate in the group B was 93.10%, which was significantly higher than 78.95% in the group A (P < 0.05). The incidence of adverse reactions was 12.07% in group B and 10.53% in group A, with no significant between-group difference (P>0.05). Conclusion Intratympanic injection of dexamethasone is more effective than intravenous infusion in the treatment of SD in middle-aged and elderly patients, with faster symptom relief, improved hearing thresholds, better sleep quality, and endothelial function, without increasing adverse reactions, demonstrating high efficacy and safety.

Objective To observe the effect of hypoxia on the expression of epithelial growth factor receptor (EGFR) and cell apoptosis of breast and cervical cancer xenografts in nude mouse models.Methods The nude mouse models with MCF-7 and HeLa xenografts were established.The degree of hypoxia and EGFR expression were observed by confocal microscopy.The influence of EGFR expression on cell apoptosis under hypoxia was observed by TUNEL assay.Results EGFR expression was either up-regulated or down-regulated in the MCF-7 and HeLa cells with high degree of hypoxia.Furthermore,the degree of apoptosis was reduced in tumor tissues with high EGFR expression compared with that in those with low expression of EGFR.Conclusion The hypoxia in MCF-7 and HeLa cells exerts heterogeneous effect on EGFR expression.Under hypoxic conditions,EGFR exoression is negatively correlated with cell apoptosis.

Objective To observe effect of laryngeal function reconstruction of sternohyoid muscle inversion for treatment of glottic carcinoma. Methods A total of 106 patients with glottic carcinoma admitted to the Department of Otolaryngology in our hospital from January 2020 to December 2023 were selected and randomly divided into control group and observation group, with 53 patients in each group. The control group underwent vertical partial laryngectomy, while the observation group received vertical partial laryngectomy combined with thyrohyoid muscle inversion laryngeal reconstruction. Both groups were assessed for voice-related parameters[normalized noise energy (NNE), harmonic-to-noise ratio (HNR), jitter, shimmer], swallowing function[videofluoroscopic swallowing study (VFSS) score], quality of life[voice handicap index (VHI) score], improvement in phonation function, and incidence of complications (irritative cough, pharyngeal pain, dyspnea, laryngeal stenosis, local adhesion). Results Three months postoperatively, both groups showed significant decrease in NNE, jitter, and shimmer, and an increase in HNR compared to preoperative levels (P < 0.05). The observation group demonstrated lower NNE, jitter, and shimmer, and higher HNR than the control group at 3 months postoperatively (P < 0.05). Both groups had improved VFSS scores and reduced VHI scores at 3 months compared to preoperation (P < 0.05). The observation group showed higher VFSS scores and lower VHI scores than the control group at 3 months after operation (P < 0.05). The control group achieved an excellent or good rate of phonation function improvement was significantly lower than the observation group (88.68% versus 71.70%, P < 0.05). The incidence of complications in the observation group was significantly lower than that in the control group (9.43%versus 24.53%, P < 0.05). Conclusion The combination of vertical partial laryngectomy and laryngeal function reconstruction of sternohyoid muscle inversion for glottic carcinoma effectively improves voice-related parameters, swallowing function, quality of life, and phonation function, with a lower incidence of complications.

Uncovering the functionally essential variations related to tumorigenesis and tumor pro-gression from cancer genomics data is still challenging due to the genetic diversity among patients, and extensive inter-and intra-tumoral heterogeneity at different levels of gene expression regulation, including but not limited to the genomic, epigenomic, and transcriptional levels. To minimize the impact of germline genetic heterogeneities, in this study, we establish multiple primary cultures from the primary and recurrent tumors of a single patient with hepatocellular carcinoma (HCC). Multi-omics sequencing was performed for these cultures that encompass the diversity of tumor cells from the same patient. Variations in the genome sequence, epigenetic modification, and gene expression are used to infer the phylogenetic relationships of these cell cultures. We find the discrepancy among the relationships revealed by single nucleotide variations (SNVs) and transcriptional/epigenomic pro-files from the cell cultures. We fail to find overlap between sample-specific mutated genes and differ-entially expressed genes (DEGs), suggesting that most of the heterogeneous SNVs among tumor stages or lineages of the patient are functionally insignificant. Moreover, copy number alterations (CNAs) and DNA methylation variation within gene bodies, rather than promoters, are significantly correlated with gene expression variability among these cell cultures. Pathway analysis of CNA/DNA methylation-related genes indicates that a single cell clone from the recurrent tumor exhibits distinct cellular characteristics and tumorigenicity, and such an observation is further confirmed by cellular experiments both in vitro and in vivo. Our systematic analysis reveals that CNAs and epigenomic changes, rather than SNVs, are more likely to contribute to the phenotypic diversity among subpop-ulations in the tumor. These findings suggest that new therapeutic strategies targeting gene dosage and epigenetic modification should be considered in personalized cancer medicine. This culture model may be applied to the further identification of plausible determinants of cancer metastasis and relapse.

Objective    To analyze the clinical efficacy of right minithoracotomy approach in the treatment of patients with regurgitation after left-sided valve surgery (LSVS). Methods    The clinical data of 77 patients who suffered tricuspid regurgitation (TR) after LSVS and received surgical treatment in the Heart Center of Henan Provincial People's Hospital from 2012 to 2019 were selected. According to the operation method, the patients were divided into a right minithoracotomy group (n=32), including 13 (40.6%) males, aged 57.3±5.3 years and a median sternotomy group (n=45), including 17 (37.8%) males, aged 55.7±6.6 years. Preoperative and postoperative clinical data of the two groups were compared and analyzed. Results    There was no significant difference in preoperative data between the two groups. There were 24 patients of tricuspid valvuloplasty (TVP) and 8 patients of tricuspid valve replacement (TVR) in the right minithoracotomy group. There were 29 patients of TVP and 16 patients of TVR in the median sternotomy group. The operation time, postoperative hospitalization time, intubation time and ICU stay time of the right minithoracotomy group were shorter than those of the median sternotomy group (P<0.001). The operative bleeding, postoperative drainage in 24 hours, postoperative blood transfusion rate and incision poor healing of the right minithoracotomy group were significantly decreased compared with those of the median sternotomy group (P<0.05). The extracorporeal circulation time between the two groups was not significantly different (P=0.382). The postoperative complications and mortality of the righ minithoracotomy group were significantly lower than those of the median sternotomy group (P<0.05). Conclusion    The procedure of right minithoracotomy access can reduce perioperative morbidity and mortality compared with the median sternotomy, and results in satisfied clinical efficacy.