ABSTRACT
BACKGROUND@#Lung cancer is a malignant with high incidence and mortality and adenocarcinoma is among the most popular subtypes. Epidermal growth factor receptor (EGFR) mutation is one of the most important driver mutations for lung adenocarcinoma and EGFR-tyrosine kinase inhibitor (TKI) will benefit those patients with sensitive EGFR mutations. Recently, immune checkpoint inhibitor (ICI) therapy, provide a new breakthrough treatment for lung cancer patients. Whereas immunotherapy as an emerging treatment does not benefit patients with EGFR mutations, for which mechanistic studies are poorly defined and focused on the link of EGFR mutations and programmed cell death-ligand 1 (PD-L1) expression, we speculate that the different immune microenvironment associated with the two classes of patients.@*METHODS@#Lung adenocarcinoma datasets were collected from the Cancer Genome Atlas (TCGA) database, and clinical information and gene expression profiles were downloaded. The immune related lymphocyte infiltration in TCGA database were generated through timer 2.0 GSEA was used to analyze the difference of pathway expression between EGFR mutant patients and wild type patients.@*RESULTS@#EGFR mutation was more frequently among women and never smokers. Immunoinfiltration analysis showed that patients with EGFR mutation tends to have more tumor associated fibroblasts, common myeloid progenitor cells, hematopoietic stem cells, effector CD4⁺ T cells and natural killer T cells infiltration, and less memory B cells, naïve B cells, plasma B cells, plasmacytoid dendritic cells, memory CD4⁺ T cells, CD4⁺ helper T cells 2, naive CD8⁺ T cells, CD8⁺ T cells and central memory CD8⁺ T cells infiltration. Moreover, patients with more infiltration of CD8⁺ T cells, natural killer T cells, memory B cells and hematopoietic stem cells, tends have better prognosis (Log-rank test, P=0.017, 0.0093, 0.018, 0.016). However, the patients with more CD4⁺ T th2 infiltration in the tumor tends to have worse prognosis (Log-rank test, P=0.016). Furthermore, the results of gene set enrichment analysis showed that compared with the lung adenocarcinoma patients with EGFR wild type, the three pathways positive regulation of natural killer (NK) cell-mediated immune response to tumor cells, NK cell activation involved in immune response, and NK cell-mediated immune response to tumor cells related to natural killer cells in patients with EGFR mutation were down regulated, while the pathway the positive regulation of cytokine secretion involved in immune response was up-regulated in EGFR mutation patients.@*CONCLUSIONS@#The tumour microenvironment of patients with EGFR mutations lacks potent tumour killing effector cells and appears dysfunctional with effector cells. This may be a potential reason for the poor efficacy of immunotherapy in patients with EGFR mutations.
ABSTRACT
BACKGROUND@#Lung cancer is the most common malignancy world-wide. Small cell lung cancer is the deadliest subtype of lung cancer, which features such as rapid growth, early metastasis, and high vascularization. Apatinib is a vascular endothelial growth factor receptor 2 inhibitor independently developed in China, which has a significant inhibition in a variety of solid tumors. The purpose of this study is to investigate the effects of Apatinib alone or Apatinib combined with mammalian target of rapamycin (mTOR) inhibitor, CCI-779, on small cell lung cancer cell line NCI-H446 in vitro.@*METHODS@#The small cell lung cancer cell line NCI-H446 was grew in vitro. The effects of Apatinib alone or Apatinib combined with CCI-779 on proliferation, apoptosis, cell cycle and migration of NCI-H446 small cell lung cancer cells were detected by CCK8; FACS and transwell assays were also carried out; Western blot assays were used to detect vascular endothelial growth factor and cell cycle related protein expression.@*RESULTS@#CCK8 assays showed that high concentration of Apatinib could inhibit the proliferation of NCI-H446 cells. Apoptosis assays showed that high concentration of Apatinib could induce NCI-H446 cell apoptosis. Transwell assays showed that high concentration of Apatinib could inhibit NCI-H446 cell migration. After combined with mTOR inhibitor CCI-779, low concentration of Apatinib could inhibit the proliferation and migration of NCI-H446 small cell lung cancer cells and induce apoptosis.@*CONCLUSIONS@#Apatinib has a concentration-dependent effect on the small cell lung cancer cell line NCI-H446. High concentration of Apatinib can inhibit the proliferation and migration of NCI-H446 small cell lung cancer cells, induce apoptosis. Apatinib combined with the mTOR inhibitor CCI-779 can sensitize the NCI-H446 cells to Apatinib.
ABSTRACT
Patients with Ⅲa staging have a large proportion in non-small cell lung cancer(NSCLC). These patients often lost the opportunity to complete excision of the tumor because the tumor have invaded adja-cent vital organs when diagnosed. Besides,Ⅲa staging contains a lot of complicated clinical TNM stages,so, the opinions of experts at home and abroad are various about treatment of NSCLC with Ⅲa staging. Neoadjuvant therapy, surgery, radiation therapy and chemotherapy play important roles under different conditions. Especially surgery is occupying a pivotal position in comprehensive therapy of Ⅲa NSCLC.
ABSTRACT
Objective: We aimed to evaluate the immune status of children with obstructive sleep apnea/hypopnea syndrome [OSAHS]
Methods: Fifty children with OSAHS having the symptoms of "snoring, mouth breathing and suffocating during sleep", who were admitted in our hospital from May 2014 to May 2016, were randomly selected. Another 52 healthy, age- and gender-matched children were enrolled as control subjects after taking informed consent. After admission, the peripheral venous blood was collected. T cell subsets and cytokines were analyzed by flow cytometry. Immunoglobulin and complement levels were detected by immunoassay analyzer
Results: The percentage of CD8+ T lymphocytes in children with OSAHS was [26.47 +/- 1.52]% which was significantly higher than that of control group [[21.94 +/- 1.92]%] [P<0.05]. OSAHS group had a significantly lower CD4+/CD8+ ratio [1.24 +/- 0.12] than that of control group [1.45 +/- 0.11] [P<0.05]. The two groups had similar percentages of CD3+ and CD4+ T lymphocytes [P>0.05]. OSAHS group had significantly higher serum levels of IL-4, IL-6, IL-10 and IFN-gamma than those of control group [P<0.05], but their IL-2 and TNF-alpha levels were similar [P>0.05]. The serum IgA and C3 levels of OSAHS group significantly exceeded those of control group [P<0.05], but their IgG, IgM and C4 levels were similar [P>0.05]
Conclusion: Children with OSAHS had increased percentage of CD8+ T lymphocytes and decreased CD4+/CD8+ ratio, suggesting this group had poor immune function. Increase in humoral immune-related indices IL-4, IL-6, IL-10 and IFN-gamma indicated the occurrence of oxidative stress and systemic inflammatory status
ABSTRACT
Objective To observe the nasal flush combined budesonide suspension liquid atomizing inhaled treatment of allergic rhinitis in infants,explore the allergic rhinitis treatments in infants. Methods 137 cases diagnosed as allergic rhinitis were collected and randomly divided into 70 cases as the treatment group and 67 patients as the control group. The patients in control group were washed the nasal cavity with 2.8% warm sodium chloride solution using 50ml and 0.5% metronidazole injection 30ml by turn. At the first week, 1 time/d, then one time every other day,while according to age,body mass the patients were given to loratadine, 1 time/d. Treatment group were used budesonide nasal inhalation of 1 ml at the base of treatment of the control group. Before and after the treatment , nasal congestion,sneezing, flow clear nose, sleep snoring and sleep quality score index were observed and compared.Results 70%of the treatment group the nasal congestion,sneezing,flow clear in 3 times after treatment with ease.The children sleep quality improved and the snoring fewer over night,only 56.7% of the control group of these symptoms improved. After the treatment the efficiency evaluation of treatment group and control group respectively was 95.1% and 77.7% ,there was statistically significant difference( x2 =9.83 ,P ＜0. 01 ). 137 cases of patients without a side effects. Conclusion curative effect of nasal flush combined budesonide suspension liquid nasal spray inhaled treatment of allergic rhinitis was distinct,infant effect-acting quickly,without side effects,easy to use.
ABSTRACT
OBJECTIVE@#To observe the inner ear structure with volume rendering (VR) reconstruction and to evaluate the role of high-resolution computed tomography (HRCT) in congenital inner ear malformations.@*METHOD@#HRCT scanning was performed in 10 patients (20 ears) without ear disease (control group) and 7 patients (11 ears) with inner ear malformations (IEM group) and the original data was processed with VR reconstruction. The inner ear osseous labyrinth structure in the images generated by these techniques was observed respectively in the normal ears and malformation ears.@*RESULT@#The inner ear osseous labyrinth structure and the relationship was displayed clearly in VR imaging in the control group,meanwhile, characters and degree of malformed structure were also displayed clearly in the IEA group. Of seven patients (11 ears) with congenital inner ear malformations, the axial, MPR and VR images can display the site and degree in 9 ears. VR images were superior to the axial images in displaying the malformations in 2 ears with the small lateral semicircular canal malformations. The malformations included Mondini deformity (7 ears), vestibular and semicircular canal malformations (3 ears), vestibular aqueduct dilate (7 ears, of which 6 ears accompanied by other malformations) , the internal auditory canal malformation (2 ears, all accompanied by other malformations).@*CONCLUSION@#HRCT can display the normal structure of bone inner ear through high quality VR reconstructions. VR images can also display the site and degree of the malformations three-dimensionally and intuitively. HRCT is valuable in diagnosing the inner ear malformation.