Objective CD4 +IL-17 +cells are a group of newly discovered effector CD4 +T cells, which may play a key role in the pathogenesis of cancer.This study aims to investigate the expres-sion of CD4 +IL-17 +cells in pancreatic cancer and its correlation with the clinicopathological characteristics and prognosis of the dis-ease as well as the clinical significance of the cells in the microenvironment of pancreatic cancer. Methods We collected tumor tis-sue and tumor-adjacent normal tissue samples from 51 pancreatic cancer patients.We determined the expressions of CD34 and vascular endothelial growth factor ( VEGF) and measured the proportion of IL-17 +cells in the cancer tissue using immunohistochemistry and the fluorescence activated cell sorter, respectively, followed by analysis of their correlation with tumor angiogenesis, clinicopathological pa-rameters, and survival time of the patients. Results The percentage of CD4 +IL-17 +cells in tumor tissue was positively correlated with microvessel density (r =0.534, P<0.05) and the expression of VEGF in the tumor tissue (r=0.356, P<0.05).IL-17 +cells were expressed more highly in the tumorous than in the tumor-adjacent normal tissue (P<0.05), and the expression level was correla-ted with the stage of tumor, node, and metastasis (TNM) and lymph node metastasis (P<0.05), but not with the patients′gender or age, tumor size, tumor location, histological grade, or local invasion (P>0.05).Fifty (98.0%) of the patients were successfully followed up for 2-67 months, which revealed a median survival time of 16.6 ±4.8 months, significantly longer in those with a higher expression of intratumoral IL-17 +cells (P<0.05).Univariate analysis showed an association of the survival rate with the tumor size, TNM stage, lymph node metastasis, and level of intratumoral IL-17 +cells, while multivariate analysis showed the TNM stage to be an independent prognostic factor for the survival of the pancreatic cancer patients. Conclusion The expression of CD4 +IL-17 +cells in the tumor tissue is positively correlated with tumor angiogenesis, while that of IL-17 +cells with the clinicopathological parameters and survival time of the patients and therefore may serve as an important immune indicator for the prognosis of pancreatic cancer.

Objective: To assess the risk of public health emergencies in Zhejiang Province, March 2021. Methods: An expert counsel was conducted to assess the risk of coronavirus disease 2019 ( COVID-19 ) , enteritis due to norovirus, chicken pox and influenza by professionals in Zhejiang CDC, based on the information from infectious disease and public health emergency surveillance in Zhejiang Province, domestic health administrative departments, World Health Organization, and European CDC. Results: In March 2021, the risk of imported COVID-19 epidemic will be high in Zhejiang Province, and the possibility of local spread could not be ruled out. The possibility of a large-scale outbreak of enteritis due to norovirus and a small-scale outbreak of chickenpox in schools and kindergartens could not be ruled out after the new term begins. An increased risk of influenza epidemic is predicted in collective units such as schools and kindergartens, yet the risk of a large-scale one will be low. Conclusion High attention should be paid to COVID-19 and enteritis due to norovirus, and general attention should be paid to chicken pox and influenza outbreak.

To screen differentially expressed genes involved in osteogenic differentiation of human bone marrow stromal cells (BMSCs) at defined stages, subtractive cDNA library was established by means of suppression subtractive hybridization. The BMSCs cultured for 12 and 21 d were used as driver and tester, respectively. A subtract library was successfully constructed and five positive clones were selected from the library. Sequencing analysis and homology comparison showed that the five clones differentially expressed in BMSCs cultured for 21 d were at least 90% homologous with the known genes in human GenBank. It was interestingly found that the osteogenic BMSCs cultured for 21 d differentially expressed decorin and Bax inhibitor 1. RT-PCR was performed to confirm the differentially expressed genes. The results showed that the expression of Bax inhibitor 1 was significantly higher in the cells of 21-day than that of 12-day, while the expression of decorin was only detected in the cells of 21-day.
Apoptosis Regulatory Proteins ; genetics ; metabolism ; Cell Differentiation ; genetics ; Cells, Cultured ; Decorin ; genetics ; metabolism ; Gene Expression Profiling ; Gene Expression Regulation ; Gene Library ; Humans ; Membrane Proteins ; genetics ; metabolism ; Mesenchymal Stromal Cells ; cytology ; Osteoblasts ; cytology

OBJECTIVEThe protection rate of inoculation with BCG vaccine is only 50 percent, and most of patients with tuberculosis had a history of BCG vaccine inoculation. Adenosine (ADO) has an immunomodulating effect; it promotes immune reaction by increasing number of macrophage and enhancing phagocytosis. The present study was designed to investigate if combined use of adenosine with BCG enhances the anti-Mycobacterium tuberculosis effect of macrophage in mice.

METHODSFifty BALB/C mice were divided randomly into 3 groups: BCG group (n = 21), BCG plus ADO group (n = 21) and control group (n = 8). The mice in BCG and BCG plus ADO groups were inoculated with 0.1 ml BCG intradermally and the mice in BCG plus ADO group were injected intraperitoneally with ADO 30 mg/(kg.d) for 5 days. The mice in BCG group and control group were injected with NS 0.1 ml/d for 5 days. Six weeks after the last injection, all mice were challenged with intravenous 1 x 10(6) CFU human Mycobacterium tuberculosis virulent strain. After challenging, lung and spleen specimens were taken at the 10th, 20th and 30th days from the mice of BCG and BCG plus ADO groups and at the 30th day from mice in control group. The pathological examinations of lung and spleen sections were performed after HE staining and acid-fast staining, and detection of cell apoptosis was also performed.

RESULTSConsolidation with neutrophil infiltration was found in most of the lung tissue taken at the day 30; there were a lot of tuberculous granulomas and Mycobacterium tuberculosis in the lungs of control group. The alveolar septum in BCG gradually became wide and in interstitium lymphocyte infiltration dominated, and there were less tuberculous granulomas but there were large number of Mycobacterium tuberculosis in the lungs from 10th to 30th days after challenging. The widening of alveolar septum and consolidation of lung tissue in BCG plus ADO group became milder with monocytes infiltration, and there were few tuberculosis granulomas and Mycobacterium tuberculosis in the lungs from 10th to 30th days after challenging.

CONCLUSIONADO could increase the number of monocyte-macrophages and promoted anti-bacterial effects of these cells.

Adenosine ; administration & dosage ; immunology ; Animals ; BCG Vaccine ; administration & dosage ; immunology ; Disease Models, Animal ; Drug Therapy, Combination ; Injections, Intradermal ; Injections, Intraperitoneal ; Macrophages ; drug effects ; immunology ; Mice ; Mice, Inbred BALB C ; Mycobacterium tuberculosis ; immunology ; Neutrophil Infiltration ; drug effects ; Phagocytosis ; drug effects ; Tuberculosis, Pulmonary ; immunology ; prevention & control

OBJECTIVETo develop a new denaturing high performance liquid chromatograph (DHPLC)-based method to screen patients with EXT gene mutation and to study the gene mutation in three families with multiple exostoses.

METHODSAll the exons of EXT gene, including the intro-exon boundaries, were amplified by PCR. Linkage analysis and DHPLC screening were carried out to identify the mutations. DNA sequencing was used to confirm the mutations.

RESULTSTwo known splice site mutations, IVS2+1 G to A and IVS7+1 G to T, and two SNPs have been detected in EXT2 or EXT1 gene.

CONCLUSIONThe transversions of IVS2+1 G to A and IVS7+1 G to T in EXT2 gene are suggested to be the disease-causing mutations and the DHPLC is a high throughout, sensitive, simple, quick, economical method to screen gene mutation in hereditary multiple exostosis.

Adult ; Chromatography, High Pressure Liquid ; methods ; DNA Mutational Analysis ; Electrophoresis, Polyacrylamide Gel ; Exons ; genetics ; Exostoses, Multiple Hereditary ; genetics ; Female ; Humans ; Male ; Mutation ; N-Acetylglucosaminyltransferases ; genetics

OBJECTIVETo explore the effect of curcumin (CUR) on cycteinyl aspirate specific protease-12 (Caspase-12) and pneumocyte apoptosis in pulmonary ischemia/reperfusion (I/R) injury mice.

METHODSThe in vivo unilateral in situ pulmonary I/R injury mouse model was established in C57BL/6J mice. Sixty experimental mice were randomly divided into six groups by random digit table, i. e., the sham-operation group (Sham), the I/R group, the I/R + dimethyl sulfoxide group (I/R + DMSO), the I/R + low dose CUR pre-treated group (I/R + CUR-100), the I/R + middle dose CUR pre-treated group (I/R + CUR-150), the I/R + high dose CUR pre-treated group (I/R + CUR-200), 10 in each group. Mice were euthanized and their left lungs were excised. Wet lung weight to dry lung weight (W/D) and the total lung water content (TLW) were tested. The morphological changes of the lung tissue were observed and index of quantitative evaluation for alveolar damage (IQA) detected under light microscope. The ultra-microstructure of the lung tissue was observed under electron microscope. The mRNA and protein expression levels of Caspase-12 and glucose regulated protein (GRP78) were detected by reverse transcription-polymerase chain reaction (RT-PCR) and Western blot. Apoptosis index (AI) of the lung tissue was determined by terminal-deoxynucleoitidyl transferase mediated nick end labeling (TUNEL) method.

RESULTSCompared with the Sham group, expression levels of Caspase-12, GRP78 mRNA and protein all significantly increased in the I/R group (P < 0.05); W/D, TLW, IQA, and AI were all notably higher (P < 0.05, P < 0.01); the morphological and ultrastructural injury of the lung tissue were notably observed in I/R group. Compared with the I/R + DMSO group, expression levels of GRP78 mRNA and protein were increasingly higher in the I/R + CUR-100 group, the I/R + CUR-150 group, and the I/R +CUR-200 group (P < 0.05), expression levels of Caspase-12 mRNA and protein were lower (P < 0.05); W/D, TLW, IQA, and AI also decreased (P < 0.05, P < 0.01); the morphological and ultrastructural injury of the lung tissue were gradually alleviated in the I/R + CUR groups.

CONCLUSIONCUR had better effect on the lung protection against I/R injury, which might be related to inhibition for pneumocyte apoptosis associated with Caspase-12 in excessive unfolded protein response (UPR).

Animals ; Apoptosis ; drug effects ; Caspase 12 ; metabolism ; Curcumin ; pharmacology ; Heat-Shock Proteins ; metabolism ; Lung ; blood supply ; Male ; Mice ; Mice, Inbred C57BL ; Reperfusion Injury ; metabolism ; pathology ; prevention & control

Objective To evaluate the diagnostic advantage of the ratio of ligamentum flavum(LF) thickness to oblique canal diameter(TODR)measured on CT images in patients with lumbar canal stenosis. Methods Seventy-one patients underwent CT and MRI examinations respectively,and they were divided into two groups,the positive group and negative group,according to the presence or absence of dural sac notch caused by the LF on bilateral parasagittal MR images.Meanwhile,50 volunteers without any symptom in the lumbar region or legs were examined by CT.TODRs were measured at the L3—S1 levels of the inferior margin of the intervertebral disc on transverse CT images,respectively.The results were further analyzed with the positive findings on MR images,clinical symptoms and physical examination,so as to find out the statistical correlation between them.Results LF thickness was(3.01?0.72)mm and TODR was 0.19?0.04 in the negative group,(3.94?0.84)mm and 0.28+0.06 in the positive group,and(3.16? 0.85)mm and 0.19?0.04 in the control group.There was significant difference between positive group and negative group or control group for LF thickness(P0.24, the sensitivity,specificity and positive predictive value were 74.8%,89.6% and 73.6% respectively. Positive correlation existed between LF thickness or TODR and clinical symptom(r=0.72,0.86,P

Objective:To study the predictive value of systemic immune-inflammation index (SII), alpha-fetoprotein (AFP) and tumor diameter on microvascular invasion (MVI) in patients with resectable hepatocellular carcinoma (HCC), with an aim to establish a preoperative prediction model.Methods:The clinical data of 283 patients who underwent hepatectomy at the First Affiliated Hospital of Nanchang University from September 2017 to September 2020 were retrospectively analyzed. In the 283 patients with HCC who were included into this study, 249 were males and 34 were females, aged (53.7±11.0) years. Using postoperative pathology findings, these patients were divided into two groups: the MVI negative group ( n=140) and the MVI positive group ( n=143). Correlation between MVI and related indicators was analyzed using logistic regression analysis. The prediction model of MVI was then established by selecting independent risk factors. Univariate and multivariate analysis of recurrence-free survival (RFS) were performed using the Cox proportional hazards regression model. Results:Multivariate logistic regression analysis showed that AFP>400 ng/ml ( OR=2.304, 95% CI: 1.329-3.995, P=0.003), SII>376.30×10 9/L ( OR=2.249, 95% CI: 1.299-3.894, P=0.004) and tumor diameter>5 cm ( OR=2.728, 95% CI: 1.587-4.687, P<0.001) were independent risk factors for MVI. The Cox proportional hazards regression model showed that AFP ( HR=1.663, 95% CI: 1.063-2.602, P=0.026) and SII ( HR=1.851, 95% CI: 1.173-2.920, P=0.008) were independent risk factors for RFS in HCC patients. The sensitivity and specificity of the model based on SII, AFP and tumor diameter were 59.4% and 75.7%, respectively. Conclusions:SII, AFP and tumor diameter were closely related to occurrence of MVI in patients with HCC. AFP and SII were independent prognostic factors of RFS. This prediction model has certain predictive values for occurrence of MVI and prognosis of HCC patients.

AIM To investigate the effect and mechanism of total anthraquinone extract of Rhei Radix et Rhizoma on cerebral ischemia-reperfusion injury and to provide relevant data references for its promising use in the management of cerebral ischemia-reperfusion injury.METHODS SD rats randomly assigned to model group,sham operation group,nimodipine group,total anthraquinone extract groups (high,medium and low dose),8 in each group,were orally administered with corresponding drugs daily for a week,with rats of the model group and sham operation group given the same volume of normal saline before the models established by middle cerebral artery occlusion (MCAO).MCAO started thirty minutes after final oral administration,and the induced ischemia went on for 1.5 h for a further reperfusion,24 h after which the neurological function score,brain index,brain water content and cerebral infarct volume were measured.Elisa kits were used to detect superoxide dismutase (SOD),Malondialdehyde (MDA),Nitric oxide (NO),interleukin-1 β (IL-1β),tumor necrosis factor (TNF),interleukin-6 (IL-6).RESULTS The total anthraquinone extract of Rhei Radix et Rhizoma significantly improved the neurological function score,decreased the brain index,brain water content,reduced the cerebral infarct volume (P ＜ 0.05),increased the activity of SOD in brain tissue (P ＜ 0.01),and reduced the levels of MDA and NO in brain tissue (P ＜0.01),and the levels of IL-6,TNF and IL-1β in serum (P ＜0.01) as well.CONCLUSION The obviously protective effect on rats' cerebral ischemia-reperfusion injury by total anthraquinone extract of Rhei Radix et Rhizoma may contribute to its inhibition of inflammatory response,and its existence as an antioxidant as well.

AIMTo investigate the effect of ligustrazine (LGT) on expression of Fas/FasL mRNA during pulmonary ischemia/reperfusion injury (PI/RI) in the rabbits.

METHODSSingle lung ischemia/reperfusion animal model was used in this study. The rabbits were randomly divided into three groups (n = 30, in each): sham operated group (Sham), I/R group (I/R) and I/R + LGT group (I/R + LGT). Changes of several parameters which included apoptotic index (AI), wet to dry ratio of lung tissue weight (W/D) and index of quantitative assessment of histologic lung injury (IQA) were measured at 1h, 3h, 5h after reperfusion in lung tissue. Meanwhile the location and expression of Fas/FasL mRNA were observed. Lung tissue was prepared for light microscopic and electron microscopic ob servation at 1 h, 3 h, 5 h after reperfusion.

RESULTSAs compared with group I/R, Fas/FasL mRNA slightly expressed in intima and extima of small pulmonary artery, alveoli, and bronchiole epithelia in group LGT. The values of AI, W/D and IQA showed significantly lower in group I/R + LGT than that in group I/R at 1 h, 3 h, 5 h after reperfusion in lung tissue (P < 0.01 and P < 0.05). Meanwhile, abnormal changes of the lung tissue in morphologically were lessen markedly in group I/R + LGT.

CONCLUSIONLigustrazine has notable protective effects on PI/RI in rabbits by inhibiting Fas/FasL mRNA express in lung tissue and decreasing apoptosis.

Animals ; Apoptosis ; Fas Ligand Protein ; metabolism ; Lung ; blood supply ; Lung Injury ; metabolism ; pathology ; Pyrazines ; pharmacology ; RNA, Messenger ; genetics ; Rabbits ; Reperfusion Injury ; metabolism ; pathology ; fas Receptor ; metabolism