Objective To explore the folate receptor mediated (FRD) check and multi-function acetic acid white solution liquid based cervical cytology (TCT) application value in cervical cancer screening.Methods A total of 602 cases of patients was tested with FRD multi-function acetic acid white solution check,and TCT and cervical biopsy pathology examination.With the used of histopathological results as the gold standard,FRD multi-function acetic acid white analysis was compared with the TCT screening inspection results.Results For a total 602 patients with TCT screening,the positive rate was 21.8％ (131/602),including 36 cases of CIN Ⅰ level,41 cases of CIN Ⅱ level,24 cases of CIN Ⅲ level,and 30 cases of cervical invasive carcinoma.For the FRD multifunction white acetate solution screening,its positive rate was 23.8％ (143/602).No statistically significant difference was found between TCT and FRD screening (P ＞ 0.05).The missed diagnosis rate of FRD multi-function white acetate solution screening was 2.6％ in inflammation,and 21.1％ in cervical invasive cancer,and 3.8 ％ in CIN.The missed diagnosis rate of TCT screening was 7.2％ in inflammation,5.3％ in CIN Ⅰ,4.9％ in CIN Ⅱ,and 58.6％ in CIN Ⅲ]; whereas,its detection coincidence rate was 100％ in squamous cells carcinoma (SCC) and adenocarcinoma (AC).FRD multi-function acetic acid white solution screening had a sensitivity 80.92％,specificity 92.14％,positive predictive value 74.13％,and negative predictive value 95.59％.TCT examination had a sensitivity 90.84％,specificity 90.23％,positive predictive value 72.12％,and negative predictive value 97.25％.No significant difference was found between FRD and TCT methods (P ＞ 0.05).Conclusions FRD and TCT methods were both efficient in screening and evaluation for cervical lesions and cervical cancer.Because FRD method is limited in the deep tube for examination of cervical lesions; it cannot completely replace the TCT examination.However,FRD method is reliable,economic,and simple operation; it is suitable for primary hospitals census of cervical cancer

Objective To study the pathologic characteristics of eutopic endometrium in patients with endometriosis.Methods Pathologic characteristics of eutopic endometrium were studied in 176 patients with endometriosis in Peking Union Medical College Hospital from January 2007 to December 2008 retrospectively.Results About 72.2％(127/176)of eutopic endometrium were in proliferative phase,19.9％(35/176)of were observed as endometrial polyp,including 32 cases with simple endometrial polyp and 3 cases with abnormal hyperplasia combined with endometrial polyp.And 4.0％(7/176)showed abnormal hyperplasia.The incidence of pathologic changes in eutopic endometrium was 22.2％(39/176).Among 53 endometriosis patients combined with infertility,the incidence of pathologic changes of eutopic endometrium was 35.9％(19/53),which was significantly higher than 16.3％ in non-infertile patients (x2 =8.24,P =0.004).Among 65 cases with irregular menstruation,the incidence of endometrial polypus and endometrial hyperplasia were 20.0％(13/65)and 10.8％(7/65),which were significantly higher than 17.1％(19/111)and 0 in normal menstruation patients(x2 =13.839,P =0.003).Conclusions The eutopic endometrium of endometriosis were in proliferative phase state.The pathologic changes of eutopic endometrium were more in patients combined with infertility and irregular menstruation.

BACKGROUND:Traditional 3D dental segmentation methods usually utilize predefined spatial geometric features,such as curvature and normal vectors,as the reference information for tooth segmentation. OBJECTIVE:To propose an algorithm for complex 3D dental segmentation and deeply explore the correlation between segmentation results and application scenarios. METHODS:A 3D dental segmentation algorithm based on dual stream extraction of structural features and spatial features was established,and the modular design of split flow was used to avoid feature confusion.Among them,the attention mechanism on the structural feature flow was used to capture the fine-grained semantic information required for tooth segmentation,and the Tran Net based on the spatial feature flow was used to ensure the robustness of the model to complex tooth and jaw segmentation.This algorithm verified its effectiveness and reliability based on clinical datasets including healthy dental jaws and complex dental jaws such as missing teeth,malocclusion and dentition crowding.The segmentation performance of the model was measured in terms of overall accuracy,mean intersection over union,and directional cut discrepancy. RESULTS AND CONCLUSION:The overall segmentation accuracy of this algorithm in the clinical data set is 97.08%,and the segmentation effect is superior to that of other competitive methods from the qualitative and quantitative perspectives.It is verified that the structural feature flow designed in this paper can extract more precise local details of tooth shape from coordinate and normal information by constructing an attention aggregation mechanism,and the spatial feature flow designed in this paper can ensure the robustness of the model to complex teeth such as missing teeth,dislocated teeth,and crowded dentition by constructing a transformation network(Tran Net).Therefore,this tooth segmentation algorithm is highly reliable for clinicians'practical reference.

Based on the development requirements of the Clinical Skills Teaching Center of modern hospitals and the needs of clinical practice teaching, the innovative human resource management model is applied to the management of the clinical skills teaching team of Bengbu Medical College, thereby promoting the fine teaching of the business in the new era.The construction of an excellent teaching team has achieved obvious initial results.This research analyzes specific management measures in combination with the actual situation, and aims to provide a reference for improving the quality of clinical skills teaching teams in Bengbu Medical College, and even promoting the reform and management of clinical skills teaching teams in the country.

Various studies have shown that the high expression of matrix metalloproteinase-3 (MMP-3) is involved and play an important role in the degradation of the extracellular matrix of synovium, cartilage and subchondral bone of rheumatoid arthritis(RA). Tissue inhibitor of metalloproteinase 1 (TIMP-1) binds specifically to MMP-3 and inhibits the activity of MMP-3. The balance of MMP-3 / TIMP-1 plays an important role in the clinical outcome of RA. New research found that inhibiting Th17 cell differentiation, maintaining Treg (regulatory T cell) activity and regulating Th17/ Treg balance may provide novel targets for the treatment of RA. Further study found that the expression of MMP-3 and Interleukin 17(IL-17) in the peripheral blood of RA patients was significantly increased, the two were positively correlated, and the decrease of Treg could affect the balance of MMP-3/TIMP-1. This article will review the mechanism of MMP-3/TIMP-1 and Th17 /Treg in RA and its clinical significance.

BACKGROUND AND PURPOSE: Encephalitis caused by Listeria monocytogenes (L. monocytogenes) is rare but sometimes fatal. Early diagnosis is difficult using routine cerebrospinal fluid (CSF) tests, while next-generation sequencing (NGS) is increasingly being used for the detection and characterization of pathogens. METHODS: This study set up and applied unbiased NGS to detect L. monocytogenes in CSF collected from three cases of clinically suspected listeria meningoencephalitis. RESULTS: Three cases of patients with acute/subacute meningoencephalitis are reported. Magnetic resonance imaging and blood cultures led to a suspected diagnosis of L. monocytogenes, while the CSF cultures were negative. Unbiased NGS of CSF identified and sequenced reads corresponding to L. monocytogenes in all three cases. CONCLUSIONS: This is the first report highlighting the feasibility of applying NGS of CSF as a diagnostic method for central nervous system (CNS) L. monocytogenes infection. Routine application of this technology in clinical microbiology will significantly improve diagnostic methods for CNS infectious diseases.
Central Nervous System ; Cerebrospinal Fluid ; Communicable Diseases ; Diagnosis ; Early Diagnosis ; Encephalitis ; Humans ; Listeria monocytogenes* ; Listeria* ; Magnetic Resonance Imaging ; Meningitis, Listeria ; Meningoencephalitis* ; Methods

Objective:To study the effect of emulsifier Tween-80 on radiation-induced bile acid enterohepatic circulation disturbance and the treatment strategy.Methods:Male C57BL/6 J mice were randomly divided into healthy control group, radiation-only group, radiation + Tween-80 group and radiation + Tween-80 + butyric acid group. The mice were exposed to total abdominal irradiation (TAI) using a specific steel lead chamber and γ-ray irradiator was used throughout the experiments. Mice in radiation+ Tween-80 group and radiation+ Tween-80+ butyric acid group were intragastrically administrated with Tween-80 for 7 d before irradiation, while healthy control group and radiation-only group were treated with sterile water. After irradiation, butyric acid was administrated to mice in radiation+ Tween-80+ butyric acid group until euthanasia, while healthy control group, radiation-only group and radiation+ Tween-80 group were treated with sterile water until euthanasia. Small intestine and fecal particles were collected 21 d after irradiation. The concentrations of bile acid in small intestinal and fecal samples were measured using enzyme linked immunosorbent assay (ELISA), the expression of TGR5 and JAM-A, as well as the ratio of IL-10/IL-12 in intestine were detected by quantitative real-time PCR (qRT-PCR). The expression levels of GPR43 in the colon were compared using immunohistochemistry (IHC).Results:Tween-80 pretreated mice exhibited lower concentration of bile acid in small intestine and higher level of bile acid in fecal sample after irradiation (7.92%, 7.99%, t=3.93, 2.94, P<0.05), the expression of TGR5, which mediating the biological function of bile acid, and it′s downstream JAM-A gene were down-regulated (20.93%, 9.91%, t=4.85, 5.14, P<0.05), the ratio of IL-10/IL-12 (indicator related to inhibition of inflammation) (4.59%, t=3.39, P<0.05) as well as the expression of GPR43 protein, a G-protein-coupled receptor for butyric acid, decreased in the colon of Tween-80-pretreated mice compared with the radiation-only group. ELISA assay revealed that butyric acid administration elevated bile acid level in small intestines (8.06%, t=9.25, P<0.05), but reduced that in feces (14.41%, t=4.71, P<0.05). In addition, TGR5 and JAM-A showed higher expression in the intestine of butyric acid-treated mice (19.35%, 32.71%, t=7.69, 19.23, P<0.05), as well as the ratio of IL-10/IL-12 (2.39%, 4.05%, t=3.38, 5.92, P<0.05) and the content of GPR43 protein in colon. Conclusions:Tween-80 deteriorates the disturbance of bile acid enterohepatic circulation induced by ionizing radiation in mice. Butyric acid administration erases the adverse effects of Tween-80.

Objective:To investigate the effect of ionizing radiation on the N 6-methyladenine (m 6A) modification profile of circular RNA (circRNA) in mouse bone marrow cells and provide scientific basis for revealing the relationship between RNA epigenetic modification and hematopoietic radiation injury. Methods:A total of twenty four C57BL/6 J mice were randomly divided into two groups: the healthy control group ( n=12), and ionizing radiation group ( n=12) irradiated in total body with 4 Gy of 137Cs γ-rays. At 5 min after irradiation, mice were killed and bone marrow cells were collected from the femur. Total RNAs were extracted and the changes in circRNA m6A modification profiles were investigated by RNA immunoprecipitation-high-throughput sequencing (MeRIP-Seq) technology and bioinformatics analysis. The representative alterations of m 6A peaks were validated by MeRIP-PCR assay. Results:325 and 455 m 6A sites were identified on circRNAs in the healthy control group and ionizing radiation group (178 common sites, 147 specific sites in the healthy control group and 277 specific sites in ionizing radiation group), respectively. 1 275 and 1 017 deriving genes of m 6A-circRNAs were identified in the healthy control group and ionizing radiation group (767 common genes, 508 specific genes in the healthy control group and 250 specific genes in ionizing radiation group), respectively. Compared with the control healthy group, 414 (178) m 6A peaks was significantly up- (down-) regulated in the ionizing radiation group( P < 10 -10; fold-change cut-off > 5). Moreover, Gene Ontology (GO) assay revealed that the deriving genes of circRNAs with differentially methylated m 6A sites between two groups involves various functions including chromatin regulation, ciliary transition fiber and poly (A)-specific ribonuclease activity. Kyoto Encyclopedia of Genes and Genomes (KEGG) assay revealed that the deriving genes of circRNAs with differentially methylated m 6A sites between two groups included numerous pathways such as platelet activation, Fc γ R-mediated phagocytosis and B cell receptor signaling pathway. Conclusions:Ionizing radiation triggers rapid alterations in the m 6A modification profile of circRNA in mouse bone marrow cells. The deriving genes of differentially methylated circRNAs are associated with a variety of functions and signaling pathways of hematopoietic radiobiology.

Hyperthermic intraperitoneal chemotherapy (HIPEC) has a unique effect on the prevention and treatment of peritoneal metastasis from malignancies. Recently, the first prospective, multicenter, randomized controlled clinical trial of HIPEC to prevent the development of peritoneal metastasis after curative surgery for patients with locally advanced colon cancer was published in the "Lancet Gastroenterol Hepatol" (COLOPEC). Regrettably, no significant difference was observed in 18-month peritoneal metastasis-free survival between postoperative adjuvant HIPEC and standard systemic chemotherapy for patients with T4 stage or perforated colon cancer. However, we wonder whether we might achieve better outcomes by further optimizing the following issues: (1) We propose that the inclusion criteria for that trial may not be entirely reasonable, which included pT4N0-2M0 and perforation. Additionally, we found that 91% of patients underwent HIPEC 5-8 weeks after primary tumor resection. (2) The imbalance in starting time of postoperative systemic chemotherapy between the two groups may have a negative impact.(3) Nine patients with peritoneal metastasis preceding HIPEC might weaken the potential efficacy of HIPEC. (4) We wonder whether HIPEC using high-dese oxaliplatin (460 mg/m²) perfusing 30 minutes for one cycle is the optimal regimen. Therefore, we are planning to conduct a randomized controlled trial (HIPEC-06) in accordcance with the characteristics of Chinese patients, to explore the clinical efficacy of curative surgery combined with HIPEC in the treatment of cT4 colorectal cancer.

Epidermal growth factor receptor (EGFR) is one of the most common targeted oncogenes in non-small cell lung cancer (NSCLC). The third-generation EGFR tyrosine kinase inhibitors (TKIs) have become the standard treatment for metastatic or recurrent NSCLC patients harboring EGFR positive or concomitant T790M mutations. However, the inevitable emergence of acquired resistance markedly limits their prolonged clinical benefits, although the third-generation EGFR TKIs have shown potent clinical outcomes in initial several months. This paper firstly reviews the characEpidermal growth factor receptor (EGFR) is one of the most common targeted oncogenes in non-small cell lung cancer (NSCLC). The third-generation EGFR tyrosine kinase inhibitors (TKIs) have become the standard treatment for metastatic or recurrent NSCLC patients harboring EGFR positive or concomitant T790M mutations. However, the inevitable emergence of acquired resistance markedly limits their prolonged clinical benefits, although the third-generation EGFR TKIs have shown potent clinical outcomes in initial several months. This paper firstly reviews the characteristics and clinical efficacy of the third-generation EGFR TKIs in the market or in the clinical development. Then this article summarizes the detailed mechanisms behind the acquired drug resistance of third-generation EGFR TKIs，and further expounds the current treatment strategies to overcome the resistance. Collectively, this review could provide more information for the development and clinical application of drugs targeting EGFR.