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Objective@#To investigate the relationship between urinary monohydroxylated metabolites of hydroxyl polycyclic aromatic hydrocarbons (OH-PAHs) and lung function, as well as the role of oxidative stress in these associations, so as to provide a scientific basis for air pollution control and policy formulation.@*Methods@#A panel study was carried out among 45 young healthy adults. Four follow up surveys and health examinations were conducted from November 2017 to October 2018 to measure lung function parameters [forced vital capacity (FVC), second forced expiratory volume in one second (FEV1), peak expiratory flow (PEF), FEV1/FVC, and forced expiratory flow between 25% and 75% vital capacity (FEF 25%~75% )], markers of exposure to 7OHPAHs [∑ 7OH PAHs], and markers of oxidative stress[8 hydroxy 2 deoxyguanosine (8 OHdG) and 8 isoprostaglandin F 2α (8 iso PGF 2α )]. The relationship between urinary PAH metabolites and lung function was quantified by linear mixed effects models. Mediation analysis was performed to assess the role of oxidative stress in the relationship between OH PAHs and lung function.@*Results@#The median values of FVC, FEV1, FEVI/FVC, PEF, and FEF 25%-75% were 4.37 L, 3.58 L, 83.00%, 4.38 L/s, and 3.32 L/s, respectively. The results showed that each 1 unit increase in log transformed value of 2 Hydroxyfluorene (2 OHFlu) was associated with a 5.05% decrease ( β %=-5.05%，95% CI =-8.85%--1.09%) in FVC, 4.15% decrease ( β %=-4.15%，95% CI =-7.94%- -0.22% ) in FEV1 and 5.87% decrease ( β %=-5.87%，95% CI =-11.35%--0.05%) in FEF 25%-75% , respectively. Each 1 unit increase in log transformed values of 2 OHFlu and 9 Phenanthrol (9 OHPhe) was associated with a 7.03% decrease ( β %=-7.03%，95% CI =-12.60%--1.11%) and a 7.08% decrease ( β%=-7.08%，95% CI =-13.50%--0.17%) in PEF, respectively. Additionally, urinary ∑ 7OH PAHs had a positive correlation with the levels of urinary 8 OHdG and 8 iso PGF 2α ( r =0.64, 0.69, P <0.01). Meanwhile, the levels of 8 OHdG mediated 17.06% and 15.71% of the association between 2 OHFlu with FVC and FEV1.@*Conclusion@#The finding reveales a negative relationship between urinary OH PAHs and lung function among young healthy adults. The 8 OHdG plays a mediated role in the correlation of 2 OHFlu with FVC and FEV1. Active relevant policies are needed to control air pollution and maintain the healthy living conditions of young people.
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Objective:To investigate the effects of sustained low-efficiency hemodialysis combined with hemoperfusion on routine blood indicators and inflammatory factors in patients with sepsis-induced acute kidney injury.Methods:Eighty-six patients with sepsis-induced acute kidney injury who received treatment in Yantai Laiyang Central Hospital from April 2018 to April 2021 were included in this study. They were randomly divided into an observation group and a control group, with 43 cases in each group. All patients received conventional supportive treatment. The control group received continuous renal replacement therapy and the observation group received sustained low-efficiency dialysis combined with hemoperfusion. Before and after treatment, routine blood indicators [hemoglobin (Hb), white blood cell (WBC) count, platelet (PLT) count, albumin (Alb)], inflammatory factors [interleukin-6 (IL-6), C-reactive protein (CRP), tumor necrosis factor-α (TNF-α), procalcitonin PCT)], renal function indicators [serum creatinine (Scr), blood urea nitrogen (BUN)], The Acute Physiology and Chronic Health Evaluation (APACHE) II score, length of hospital stay, and 28-day mortality rate were compared between the two groups.Results:Before treatment, there were no significant differences in Hb, WBC count, PLT count, Alb, IL-6, CRP, TNF-α, PCT, Scr, BUN, and APACHE II score between the two groups ( t = 0.04, 0.95, 0.23, 0.67, 1.54, 0.75, 0.98, 0.23, 1.04, 0.44, 0.07, all P > 0.05). After treatment, serum levels of Hb and Alb in each group were significantly increased compared with those before treatment. After treatment, serum levels of Hb and Alb in the observation group were (105.29 ± 15.80) g/L, (39.25 ± 7.87) g/L, respectively, which were significantly higher than (98.55 ± 12.93) g/L and (33.38 ± 7.29) g/L in the control group ( t = 2.16, 3.58, both P < 0.05). After treatment, WBC count, PLT count, IL-6, CRP, TNF-α, PCT, Scr, and BUN levels, and APACHE II score in each group were significantly decreased compared with those before treatment. After treatment, WBC count, PLT count, IL-6, CRP, TNF-α, PCT, Scr, and BUN levels, and APACHE II score in the observation group were (10.28 ± 1.87) × 10 9/L, (129.32 ± 14.79) × 10 9/L, (59.00 ± 12.77) μg/L, (22.41 ± 5.01) mg/L, (28.41 ± 4.77) μg/L, (18.41 ± 2.78) μg/L, (162.01 ± 21.04) μmol/L, (7.38 ± 1.17) mmol/L, (11.28 ± 3.60) points, respectively, which were significantly lower than (12.32 ± 2.27) × 10 9/L, (137.39 ± 18.30) × 10 9/L, (79.35 ± 14.36) μg/L, (29.31 ± 6.37) mg/L, (34.33 ± 5.38) μg/L, (22.32 ± 3.35) μg/L, (184.06 ± 24.03) μmol/L, (9.87 ± 1.66) mmol/L, (14.65 ± 3.38) points in the control group ( t = 4.54, 2.24, 6.94, 5.58, 5.39, 5.89, 4.52, 8.03, 4.47, all P < 0.05). The length of intensive care unit stay in the observation group was significantly shorter than that in the control group [(11.63 ± 2.18) days vs. (14.07 ± 2.71) days, t = 4.60, P < 0.05]. There was no significant difference in 28-day mortality rate between the two groups ( χ2 = 1.36, P > 0.05). Conclusion:Sustained low-efficiency dialysis combined with hemoperfusion is effective on sepsis-induced acute kidney injury. The combined therapy can improve routine blood indicators, inhibit inflammatory reactions, promote renal function recovery, and decrease the mortality rate to a certain degree.
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@#Objective To investigate the relationship between cerebral microbleeds and cerebral artery stenosis in patients with large atherosclerotic cerebral infarction.Methods We retrospectively enrolled 512 patients with large atherosclerotic cerebral infarction who were the first time admitted to the Department of Neurology of our hospital from October 2018 to June 2021.According to the results from the craniocerebral magnetic sensitive weighted imaging,patients were divided into non-CMBs group and CMBs group.The purpose of this study was to investigate the risk factors and incidence rate of CMBs，the relationship between cerebral microbleeds and cerebral artery stenosis in patients with large atherosclerotic cerebral infarction.Results The incidence rate of CMBs was 39.3% in this study.Factors including age,hypertension,hyperhomocysteinemia,history of antiplatelet drug use,WMH,intracranial and extracranial artery stenosis coexisted independently with CMBs.The degree of CMBs is positively correlated with cerebral artery stenosis.Conclusion Age,hypertension,high-profile cysteinemia,anti-platelet drug application history,WMH and intracranial artery or both of extracranial vessels stenosis are independent risk factors of CMBs.The degree of CMBs is positively correlated with cerebral artery stenosis.Triacylglycerol may be a protective factor for CMBs.
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Objective:To investigate the relations between enlarged perivascular spaces (EPVS) and cognitive impairment in patients with acute mild ischemic stroke.Methods:A total of 234 patients with acute mild ischemic stroke admitted to our hospital from October 2019 to June 2021 were chosen in our study. According to the Montreal Cognitive Assessment (MoCA) scores 7 d after admission, these patients were divided into normal cognitive function group (MoCA scores≥26) and cognitive impairment group (MoCA scores<26). The clinical data and imaging data of patients from the 2 groups were compared. Multivariate Logistic regression analysis was used to determine the independent influencing factors for post-stroke cognitive impairment (PSCI). Spearman correlation analysis was performed to analyze the correlations of severity degrees of EPVS of basal ganglia with MoCA total scores and each cognitive domain scores in patients from cognitive impairment group.Results:Among the 234 patients, 73 (31.2%) had normal cognitive function and 161 (68.8%) had cognitive impairment. As compared with normal cognitive function group, patients from cognitive impairment group had significantly older age, significantly less years of education, statistically higher fasting blood glucose level, significantly higher proportion of patients with moderate and severe basal ganglia EPVS, and significantly higher proportion of patients with white matter lesion (WML) grading 2 and 3 ( P<0.05). Multivariate Logistic regression analysis showed that age, years of education, basal ganglia EPVS and WML grading were independent influencing factors for PSCI ( OR=1.049, 95%CI: 1.007-1.093, P=0.021; OR=0.910, 95%CI: 0.832-0.995, P=0.039; OR=0.760, 95%CI: 1.176-2.637, P=0.006; OR=2.270, 95%CI: 1.219-4.228, P=0.010). Correlation analysis showed that the severity degrees of basal ganglia EPVS were negatively correlated with MoCA scores, and scores of visual space and executive ability scale, attention scale, language scale and delayed recall scale ( P<0.05). Conclusion:Acute mild ischemic stroke patients with older age, less years of education, severer basal ganglia EPVS and higher WML grading trends to have cognitive impairment; basal ganglia EPVS mainly affects the cognitive domains of visual space and executive ability, attention, language, and delayed recall.
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Enlarged perivascular spaces (EPVS) are one of the early characteristic imaging manifestations of cerebral small vessel disease. Studies have shown that EPVS may be an early independent risk factor for post-stroke cognitive impairment (PSCI), and it plays an important role in the occurrence and development of cognitive impairment. This article reviews the correlation between EPVS and PSCI.
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Objective To study the influence of cell-extracellular matrix (ECM) adhesion on migration of tumor cells regulated by ECM stiffness. Methods The cellular Potts model (CPM) was established to simulate tumor cell growth and cellular immune feedback system. The effects from mechanical behavior of cells on cell-ECM adhesion were observed, and the migration of tumor cells under different ECM was analyzed. Results The ECM stiffness could influence the migration rate of tumor cells. The change of ECM stiffness regulated the adhesion force between cells and ECM, and the change of adhesion force would influence the migration rate of cells. Conclusions The migration and distribution patterns of cells are closely related to the adhesion and stiffness of ECM. The increase in ECM stiffness can effectively promote the migration rate of tumor cells, and the further increase in ECM stiffness inhibits the migration of tumor cells. These findings may further reveal dynamic changes of ECM, adhesion and mechanical performance of tumor cell migration.
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Fibroblast growth factor receptors (FGFRs) have emerged as promising targets for anticancer therapy. In this study, we synthesized and evaluated the biological activity of 66 pyrazolo[3,4-
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Objective:To evaluate the association between the use of emergency medical services (EMS) and the severity of disease among patients admitted to the emergency room, to analyze the characteristics of the patients, and to build prediction model providing evidence-based use of EMS resources.Methods:The data of patients admitted to the Emergency Room of the First Affiliated Hospital of University of Science and Technology of China from January 2020 to July 2021 were extracted from the Chinese Emergency Triage Assessment and Treatment (CETAT) database. Patients were divided into the EMS use group (AB+ group) and self-seeing group (AB-group) according to whether they used EMS. The patients’ general condition, vital signs and laboratory tests results were recorded. The severity of patients’ condition was judged based on whether the patient was admitted to the department of critical medicine, specialized care unit, emergency operation and/or emergency percutaneous intervention. A 9-variable model that did not require laboratory inspection and 22-variable model that required laboratory inspection were established to correct the propensity score to analyze the correlation between the severity of disease and the EMS use. In the subgroup analysis, the correlation between the EMS use and severity of the patients was analyzed according to the reason of the patient’s visit.Results:During the study period, 16 489 patients were admitted to the emergency room, and 6975 patients were finally enrolled in this study. There were 2768 patients (39.7%) in the AB+ group and 4207 patients (60.3%) in the AB-group. In the AB+ group 522 patients (18.9%) were in high risk, and in the AB-group 563 patients (13.4%) were in high risk. Compared with the AB-group, patients in the AB+ group were older and had a higher proportion of coma, a faster autonomic heart rate, and a lower diastolic blood pressure and peripheral oxygen saturation (SpO 2). In the 9-variable model, sex, consciousness, temperature, heart rate and diastolic blood pressure were associated with the EMS use. In the 22-variable model, consciousness, SpO 2, neutrophils, and albumin were the relevant factors for patients using EMS. Before the correction of propensity score, the EMS use was an independent risk factor for critically ill patients ( OR=1.5, 95% CI 1.32-1.72, P<0.001). After adjusted using 9-variable propensity score, the EMS use ratio decreased significantly compared with that without correction ( OR=1.24,95% CI 1.08-1.42, P<0.001). Interestingly, after adjusted with propensity score match with 22-variable model, there was no association between the severity of disease and t the EMS use ( OR=1.10,95% CI 0.95-1.28, P=0.195). In subgroup analysis, patients’ chief complaint of central nervous system, cardiovascular system, and trauma were the top three reasons at admission. Before the propensity score correction, the EMS calling patients with chief complaint of central nervous system, digestive system, and trauma were related to the severity of the patients. After adjusted with 9-variable model the EMS use was associated with the severity of the disease only in trauma patients, and after adjusted with 22-variable model there was no statistical difference considering the severity of the disease in all subgroups. Conclusions:The EMS use is common. However, the association of the EMS use with the severity of disease is decreased with variable models using propensity score. These findings indicate that the EMS use should be based on multivariable models, which may be important in detecting critically ill patients, optimizing the EMS use, and avoiding unnecessary call in the future.
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Objective:To study the ability of the Retinal Health Assessment (RHA) system to obtain fundus images in patients with different types and degrees of cataracts.Methods:A cross-sectional study was performed.Forty-five eyes of 41 patients with cataract were enrolled in First People's Hospital, Shanghai Jiaotong University from December 2016 to January 2017.Lens opacity grading and RHA fundus imaging were performed after pupil dilation.Forty-five eyes were divided into 4 groups according to the degree of lens opacity: cortical cataract group 18 eyes, nucleus cataract group 21 eyes, posterior subcapsular cataract group 2 eyes, hybrid cataract group 4 eyes.Fundus images were obtained by FullSpectrum mode of RHA2020, and the clearness of fundus images was evaluated.Scores of fundus images clarity were compared between the cortical cataract group and nucleus cataract group.This study was approved by the Ethics Committee of First People's Hospital, Shanghai Jiaotong University.Written informed consent was obtained from each patient prior to any medical examination.Results:In all 45 eyes, the phacoscotasmus classification ranged from mildest (C0N2P0, 1 eye) to very serious (C2N5P2 and C4N2P4, 2 eyes). The grade Ⅳ nuclear opacity, grade Ⅲ cortical opacity, and grade Ⅲ posterior subcapsular opacity reduced the quality of RHA images significantly, especially for images with red and green light.In cortical cataract group, images showed peripapillary vessels and retinal vessels at 580 nm and 590 nm, while retinal and choroidal vessels, as well as choroidal pigmentation, were visible at 810 nm.The clarity scores at 580, 590 and 810 nm were 2.0 (1.0, 3.0), 2.0 (2.0, 3.0) and 2.0 (2.0, 3.0), which were lower than that with red and green light (620 nm + 550 nm) (3.0[2.0, 3.0]), with statistically significant differences (all at P<0.05). In nucleus cataract group, the quality of fundus images from the eyes with grade Ⅲ nucleus cataracts was good, the image quality decreased when the nucleus opacity was grade Ⅳ, retinal vessels were occasionally observed at 580 nm and 590 nm.Additionally, retinal and choroidal vessels and choroidal pigment were visible at 810 nm and 850 nm.The clarity scores at 580, 590, 810 and 850 nm were 1.0 (1.0, 3.0), 2.0 (1.0, 3.0) and 2.0 (1.0, 3.0), which were lower than that with red and green light (620 nm + 550 nm) (3.0[1.5, 3.0]), with statistically significant differences (all at P<0.05). In posterior subcapsular cataract group, the retinal vessels were visible at 580 nm, meanwhile retinal and choroidal vessels and choroidal pigment could be observed at 810 nm and 850 nm.In hybrid cataract group, running lines of retinal vessels could be seen at 850 nm, while the central reflection was absent.Focal choroidal vessels were observed. Conclusions:Except for severe cases, RHA system can produce good quality fundus images in cataract eyes at 580, 590, 810 and 850 nm, facilitating the evaluation of fundus disease before surgery and prediction of visual outcomes after surgery.
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Platelet-rich fibrin (PRF) has been widely used owing to its ability to stimulate tissue regeneration. To date, few studies have described the antibacterial properties of PRF. Previously, PRF prepared by horizontal centrifugation (H-PRF) was shown to contain more immune cells than leukocyte- and platelet-rich fibrin (L-PRF). This study aimed to compare the antimicrobial effects of PRFs against Staphylococcus aureus and Escherichia coli in vitro and to determine whether the antibacterial effects correlated with the number of immune cells. Blood samples were obtained from eight healthy donors to prepare L-PRF and H-PRF. The sizes and weights of L-PRF and H-PRF were first evaluated, and their antibacterial effects against S. aureus and E. coli were then tested in vitro using the inhibition ring and plate-counting test methods. Flow-cytometric analysis of the cell components of L-PRF and H-PRF was also performed. No significant differences in size or weight were observed between the L-PRF and H-PRF groups. The H-PRF group contained more leukocytes than the L-PRF group. While both PRFs had notable antimicrobial activity against S. aureus and E. coli, H-PRF demonstrated a significantly better antibacterial effect than L-PRF. Furthermore, the antimicrobial ability of the PRF solid was less efficient than that of wet PRF. In conclusion, H-PRF exhibited better antibacterial activity than L-PRF, which might have been attributed to having more immune cells.
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Antibactériens/pharmacologie , Anti-infectieux , Centrifugation , Escherichia coli , Leucocytes , Fibrine riche en plaquettes , Staphylococcus aureusRÉSUMÉ
Objective To investigate maternal zinc metabolism and the changes of zinc-related factors as metallothionein-1 (MT1) and zinc transporter-1 (ZnT1) in certain types of congenital heart diseases (CHD).Methods Fifteen infants with interventricular septal defect,12 infants with atrial septal defect and 7 infants with tetralogy of Fallot,together with their mothers were enrolled,and normal infants and their mothers were enrolled by a ratio of 1 ∶ 1 with the above three types of CHD diseases.General conditions of the mothers,along with their diets and zinc-containing drug supplementation during the pregnancy,were surveyed.Maternal blood zinc levels and serum alkaline phosphatase activities at gestation week 32 and delivery or induced abortion,and the protein and mRNA expressions of MT1 and ZnT1 in maternal serum and placental tissue at delivery or induced abortion were assayed.Results The general conditions were comparable between the CHD group and control group.The ratio of the mothers taking more zinc-rich food was significantly lower in the CHD group than in the control group.Circulating zinc levels in interventricular septal defect (73.55±5.79 μmol/L),atrial septal defect (72.66±5.82 μmol/L) and tetralogy of Fallot (68.72±6.72 μmol/L) groups were significantly lower than those in the control groups (82.77± 7.88,84.58 ± 7.55 and 85.66 ± 7.30 μmol/L) at delivery (P all ＜ 0.05).Similar change patterns were seen for serum alkaline phosphatase activities.The relative quantities of serum MT1 and ZnT1 proteins in interventricular septal defect (73.22±36.54 and 68.55± 27.82),atrial septal defect (64.29± 38.26 and 74.55 ± 29.67) and tetralogy of Fallot (67.88± 30.50 and 70.13±29.65) groups were significantly lower than those in their corresponding control groups (166.31±67.43and 97.67±30.22,182.56±71.40 and 111.65±32.70,and 173.81±62.36 and 108.27±28.52,P＜0.01 or P＜0.05).The relative quantities of placental MT1 and ZnT1 proteins and mRNA expressions in interventricular septal defect (protein quantities 0.438±0.096 and 0.384±0.061,mRNA expressions 1.23±0.82 and 0.96±0.39),atrial septal defect (0.427±0.093 and 0.377±0.059,1.17±0.70 and 0.85±0.40) and tetralogy of Fallot (0.414±0.111 and 0.336±0.066,1.31±0.97 and 0.90±0.38) groups were significantly lower than those in their corresponding control groups (protein quantities 0.565±0.083 and 0.541±0.090,mRNA expressions 2.78± 1.06 and 1.67±0.33;protein quantities 0.622±0.136 and 0.493±0.079,mRNA expressions 2.85±0.89 and 1.72±0.38;protein quantities 0.637±0.125 and 0.521±0.089,mRNA expressions 3.21 ± 0.99 and 1.61±0.29;P＜0.01 or P＜0.05).Conclusion Mothers with their fetus of certain types of CHD are found zinc deficiency,and down-regulation of MT1 and ZnT1 expressions in the serum and placenta may involve in the pathogenesis of CHD when maternal zinc deficiency.
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To report a case of imported furuncular cutaneous myiasis,and to analyze the sequence of the mitochondrial cytochrome C oxidase subunit Ⅰ (CO Ⅰ) gene of the pathogenic Cordylobia anthropophaga.A 33-year-old female patient had a travel history to Ghana and Cameroon in Africa 1 month prior to the presentation.No anti-mosquito measures were taken during her stay,and she hung up the laundries outside to dry for several times.Skin examination showed furuncular protuberances with diameters of 1-2 cm on the inner side of the left upper arm as well as on the outer side of the left chest,which were bright red and hard on palpation with irregular borders and a small hole on their central surface.Morphological identification revealed that the larva squeezed from the lesion was suspected as myiasis.After PCR amplification of the CO Ⅰ gene of the larva,an about 650-bp PCR product was acquired.Sequencing and BLAST analysis showed that this product was most closely related to the CO Ⅰ gene (GenBank accession number:FR719158.1) of Cordylobia anthropophaga isolated in Cameroon in 2010 with the sequence similarity being 99.84％,and they were grouped together on the phylogenetic tree.According to the clinical features and travel history of the patient and the sequencing results of the pathogenic Cordylobia anthropophaga,this case was confirmed as imported furuncular cutaneous myiasis caused by Cordylobia anthropophaga.
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Cystic echinococcosis (CE), a zoonotic disease caused by Echinococcus granulosus at the larval stage, predominantly develops in the liver and lungs of intermediate hosts and eventually results in organ malfunction or even death. The interaction between E. granulosus and human body is incompletely understood. Exosomes are nanosized particles ubiquitously present in human body fluids. Exosomes carry biomolecules that facilitate communication between cells. To the best of our knowledge, the role of exosomes in patients with CE is not reported. Here, we isolated exosomes from the sera of patients with CE (CE-exo) and healthy donors and subjected them to liquid chromatography-tandem mass spectrometry analysis. Proteomic analysis identified 49 proteins specifically expressed in CE-exo, including 4 proteins of parasitic origin. The most valuable parasitic proteins included tubulin alpha-1C chain and histone H4. And 8 proteins were differentially regulated in CE-exo (fold change>1.5), as analyzed with bioinformatic methods such as annotation and functional enrichment analyses. These findings may improve our understanding about the interaction between E. granulosus and human body, and may contribute to the diagnosis and prevention of CE.
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Humains , Biologie informatique , Diagnostic , Échinococcose , Echinococcus granulosus , Echinococcus , Exosomes , Gene Ontology , Histone , Corps humain , Foie , Poumon , Spectrométrie de masse , Donneurs de tissus , Tubuline , ZoonosesRÉSUMÉ
Objective To investigate the effects of maternal exposure to ambient fine particles (PM2.5) in Fuzhou during pregnancy on immune responses to ovalbumin (OVA) in neonatal rats and the possible mechanisms.Methods Pregnant Sprague-Dawley rats were randomly assigned into four groups (ten in each):filtered air (FA) plus normal saline (NS),airborne PM2.5 plus NS (PM2.5-NS),FA plus OVA (FA-OVA) and PM2.5 plus OVA (PM2.5-OVA) groups.Pregnant dams in the PM2.5 exposure groups were placed in a PM2.5 exposure chamber in which the PM2.5 concentration was equal to the ambient air from the beginning of gestation till delivery,whereas the other dams inhaling air without particulate matters were put into a clean chamber.OVA sensitization was conducted through intraperitoneal injection of OVA at 50 μ g per dam at 4 and 9 days of gestation,followed by inhalation of atomized 1％ OVA for 30 min at 18,19 and 20 days of gestation.Dams without OVA sensitization were given NS in the same way.Levels of interleukin (IL)-4,IL-5 and interferon-γ (IFN-γ) in neonatal rats' plasma were measured by enzyme-linked immunosorbent assay just after birth.Protein levels of transcription factors GATA-3 and T-bet in lung were analyzed by Western-blotting.Changes in microRNA(miR)-146a and miR-146b in spleen were detected by real-time polymerase chain reaction.Histological changes in lung were observed under light microscope.One-way analysis of variance and LSD test were used as statistical methods.Results (1) IL-4 level in plasma was significantly increased in PM2.5-NS [(18.56±7.04) ng/L],FA-OVA [(34.04±7.06) ng/L] and PM2.5-OVA groups [(45.67±8.18) ng/L] as compared with that in FA-NS group [(10.51 ±2.88) ng/L],and the level of IL-4 in PM2.5-OVA group was higher than that in PM2.5-NS and FA-OVA groups (F=54.667,P＜0.001).Significantly increased IL-5 level in plasma was found in FA-OVA and PM2.5-OVA groups as compared with that in FA-NS group (F=6.253,P=0.023).Among the four groups,FA-OVA group showed significantly increased IFN-γ level in plasma (F=28.604,P＜0.001).(2) GATA-3 level in lung tissues was significantly increased in PM2.5-NS (31.09 + 3.54),FA-OVA (35.24± 5.00) and PM2.5-OVA groups (47.81 ±3.63) as compared with that in FA-NS group (24.19±3.12),and higher in PM2.5-OVA group than in PM2.5-NS and FA-OVA groups (F=96.581,P＜0.001).T-bet level was significantly lower in FA-OVA and PM2.5-OVA groups than in FA-NS group.Moreover,PM2.5-OVA group showed decreased T-bet level as compared with that in PM2.5-NS and FA-OVA groups (F=30.852,P＜0.001).(3) Expression of miR-146a in spleen was significantly enhanced in PM2.5-NS (1.72±0.27),FA-OVA (1.56±0.37) and PM2.5-OVA groups (3.06± 0.52) than in FA-NS group (1.05 ±0.25).Moreover,PM2.5-OVA group showed enhanced expression of miR-146a as compared with that in PM2.5-NS and FA-OVA groups (F=42.276,P＜0.001).Changes in the expressions of miR-146b were similar to those in miR-146a (F=28.776,P＜0.001).(4) Stenosis or disappearance of alveolar spaces,accompanied with infiltration of inflammatory cells in interstitial substance and congestion in alveolar septum,was seen in FA-OVA and PM2.5-OVA groups and conditions in the latter group were more severe.Conclusions Intrauterine exposure to ambient PM2.5 negatively affects fetal lung development and immunological function in rats,especially when the dams are sensitized with OVA during pregnancy.
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Objective@#To investigate the effects of maternal exposure to ambient fine particles (PM2.5) in Fuzhou during pregnancy on immune responses to ovalbumin (OVA) in neonatal rats and the possible mechanisms.@*Methods@#Pregnant Sprague-Dawley rats were randomly assigned into four groups (ten in each): filtered air (FA) plus normal saline (NS), airborne PM2.5 plus NS (PM2.5-NS), FA plus OVA (FA-OVA) and PM2.5 plus OVA (PM2.5-OVA) groups. Pregnant dams in the PM2.5 exposure groups were placed in a PM2.5 exposure chamber in which the PM2.5 concentration was equal to the ambient air from the beginning of gestation till delivery, whereas the other dams inhaling air without particulate matters were put into a clean chamber. OVA sensitization was conducted through intraperitoneal injection of OVA at 50 μg per dam at 4 and 9 days of gestation, followed by inhalation of atomized 1% OVA for 30 min at 18, 19 and 20 days of gestation. Dams without OVA sensitization were given NS in the same way. Levels of interleukin (IL)-4, IL-5 and interferon-γ (IFN-γ) in neonatal rats' plasma were measured by enzyme-linked immunosorbent assay just after birth. Protein levels of transcription factors GATA-3 and T-bet in lung were analyzed by Western-blotting. Changes in microRNA(miR)-146a and miR-146b in spleen were detected by real-time polymerase chain reaction. Histological changes in lung were observed under light microscope. One-way analysis of variance and LSD test were used as statistical methods.@*Results@#(1) IL-4 level in plasma was significantly increased in PM2.5-NS [(18.56±7.04) ng/L], FA-OVA [(34.04±7.06) ng/L] and PM2.5-OVA groups [(45.67±8.18) ng/L] as compared with that in FA-NS group [(10.51±2.88) ng/L], and the level of IL-4 in PM2.5-OVA group was higher than that in PM2.5-NS and FA-OVA groups (F=54.667, P<0.001). Significantly increased IL-5 level in plasma was found in FA-OVA and PM2.5-OVA groups as compared with that in FA-NS group (F=6.253, P=0.023). Among the four groups, FA-OVA group showed significantly increased IFN-γ level in plasma (F=28.604, P<0.001). (2) GATA-3 level in lung tissues was significantly increased in PM2.5-NS (31.09±3.54), FA-OVA (35.24±5.00) and PM2.5-OVA groups (47.81±3.63) as compared with that in FA-NS group (24.19±3.12), and higher in PM2.5-OVA group than in PM2.5-NS and FA-OVA groups (F=96.581, P<0.001). T-bet level was significantly lower in FA-OVA and PM2.5-OVA groups than in FA-NS group. Moreover, PM2.5-OVA group showed decreased T-bet level as compared with that in PM2.5-NS and FA-OVA groups (F=30.852, P<0.001). (3) Expression of miR-146a in spleen was significantly enhanced in PM2.5-NS (1.72±0.27), FA-OVA (1.56±0.37) and PM2.5-OVA groups (3.06±0.52) than in FA-NS group (1.05±0.25). Moreover, PM2.5-OVA group showed enhanced expression of miR-146a as compared with that in PM2.5-NS and FA-OVA groups (F=42.276, P<0.001). Changes in the expressions of miR-146b were similar to those in miR-146a (F=28.776, P<0.001). (4) Stenosis or disappearance of alveolar spaces, accompanied with infiltration of inflammatory cells in interstitial substance and congestion in alveolar septum, was seen in FA-OVA and PM2.5-OVA groups and conditions in the latter group were more severe.@*Conclusions@#Intrauterine exposure to ambient PM2.5 negatively affects fetal lung development and immunological function in rats, especially when the dams are sensitized with OVA during pregnancy.
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Objective To establish a new method for the verification of the interior quality control products of Medical Laborato ry by using the quality control data of the two groups to check the quality of the interior quality control products during the verification.Methods Take use of quality control data of HBsAg,HCV-Ab,Syphilis antibody and HIV antibody of two time periods before and after during the period of validity to analyze difference in the two groups before and after data and judge the stability of interior quality control products between the before and after.Results There was no significant difference between the two groups in the data of before and after(P＞0.05),indicating that the control products maintained stability during the process.The difference of the two groups of HBsAg was statistically significant(P＜0.05),indicating that the control product did not maintain good stability during this period,and measures should be taken.Conclusion Make statistical analysis of the mean((x)) and standard deviation(s) calculated from the quality control data obtained from the laboratory quality control,analyzing data whether the differences between the two time periods was statistically significant,so as to achieve internal quality control during product verification purposes
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Objective To establish a new method for the verification of the interior quality control products of Medical Laborato ry by using the quality control data of the two groups to check the quality of the interior quality control products during the verification.Methods Take use of quality control data of HBsAg,HCV-Ab,Syphilis antibody and HIV antibody of two time periods before and after during the period of validity to analyze difference in the two groups before and after data and judge the stability of interior quality control products between the before and after.Results There was no significant difference between the two groups in the data of before and after(P＞0.05),indicating that the control products maintained stability during the process.The difference of the two groups of HBsAg was statistically significant(P＜0.05),indicating that the control product did not maintain good stability during this period,and measures should be taken.Conclusion Make statistical analysis of the mean((x)) and standard deviation(s) calculated from the quality control data obtained from the laboratory quality control,analyzing data whether the differences between the two time periods was statistically significant,so as to achieve internal quality control during product verification purposes
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Background:Inflammatory bowel disease (IBD)is a group of chronic gastrointestinal inflammatory disease and its diagnosis depends on analysis of clinical,endoscopic and pathological characteristics. Aims:To analyze the clinical, endoscopic and pathological characteristics of IBD. Methods:Clinical,endoscopic and pathological characteristics of 99 patients with IBD [including 61 ulcerative colitis (UC)and 38 Crohn's disease (CD)]from January 2010 to April 2017 at Yijishan Hospital were retrospectively analyzed. Results:Compared with CD patients,age in UC patients was significantly increased,incidences of diarrhea,bloody stool were significantly increased while incidence of abdominal mass was significantly decreased (P < 0. 05). Extensive type UC and ileocolonic type CD were common. Proportion of patients received 5-aminosalicylic acid (5-ASA)was significantly higher in UC than in CD (90. 2% vs. 71. 1%,P = 0. 014). Two UC patients achieved remission shown by endoscopy,and endoscopic remission achieved in 3 CD patients. The main pathological features of UC were cryptic branching (57. 1%),cryptic twisting (76. 2%),cryptic atrophy (54. 8%)and cryptic irregularity (28. 6%). Ulcer was seen in 78. 9% of CD patients with active chronic inflammation (mainly lymphocyte and plasmocyte infiltration),and the detection rate of non-caseating granuloma was 15. 8% . Conclusions:UC patients are characterized with older age,diarrhea,bloody stool and higher administration rate of 5-ASA,and the endoscopic features were mucosal bleeding and ulcers. Pathological characteristics of UC were mainly cryptic architectural change and inflammatory infiltration,while those of CD were mainly segmental lesions and chronic inflammation with lymphocyte and plasmocyte infiltration and some with non-caseating granuloma.
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Objective · To investigate the gender-related metabolomic differences in human saliva. Methods · The saliva metabolomic profiles of 5 male and 5 female healthy volunteers with matched age, body mass index (BMI), living and tooth-brushing condition were acquired using ultra-high performance liquid chromatography with quadrupole time-of-flight mass spectrometry. Metabolites were identified using publicly accessible databases and further confirmed individually with standard compounds. Both multivariant and univariate statistics were conducted to find inter-gender differences.Results · Forty-eight metabolites in human saliva were identified including 13 amino acids, 6 choline metabolites, 15 carnitines, 4 sphinganine metabolites,7 lysophosphatidylcholine and 3 organic acids. Levels of phenylalanine, acetylcarnitine, propionylcarnitine, butyrylcarnitine, isobutyrylcarnitine,isovalerylcarnitine and sphinganine were higher in the saliva of females than that of males. Conclusion · Rich metabolic information present in human saliva with significant gender diffference which ought to be taken into consideration in study on the metabonomics of saliva.
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Objective:To explore the influence of continuous quality improvement of nursing care on the compliance of senile patient with gastroscopy.Methods: 100 senile patients with gastroscopy were selected, and they were divided into control and improvement groups ( each group included 50 cases ) depended on the different time of hospitalization. The control group was treated with routine nursing quality method, while the improvement group was treated with continuous quality improvement method. A series of indicators in the endoscopic examination, such as the success rate of one time intubation, the used time, yes or no cough and other adverse reactions and the patient's satisfaction for nursing services were compared between the two groups.Results:After 5 months of continuous quality improvement nursing, the success rate of one time intubation in the improvement group was significantly higher than that in the control group, and the checking time of improvement group was significantly less than that of control group, the differences were statistically significant(t=7.162,t=6.61; P<0.01). Besides, on check process, the incidence of adverse reactions in the improvement group was significantly lower than that in the control group and the satisfaction of nursing service was significantly higher than that of the control group, the differences were statistically significant(x2=23.077,x2=10.699,P<0.01).Conclusion:The application of continuous quality improvement nursing for senile patients during gastroscopy can improve the success rate of one time intubation, shorten the gastroscopy time, reduce the incidence of adverse reactions, enhance compliance of gastroscopy and satisfaction for nursing service, and its clinical effect is obvious.