Objective To investigate the effect of hyperbaric oxygen therapy on T-lymphocyte subpopulations in rats with acute pancreatitis. Methods 56 rats were randomly divided into three groups the sham group ( n = 8 ),control group( n = 24) and hyperbaric oxygen therapy group( treatment group, n = 24), then the control group and treatment groups were divided into three subgroups of 8 rats each undergoing euthanasia on days 1,3,7 after the acute pancreatitis induction. The CD4+ ,CD8+ subpopulations of T-lymphocytes in peripheral blood were detected respectively at the fist day and each day of the euthanasia. The sham group was used to make sure that the model was successfully induced. After euthanasia the pancrea was examined using electron microscopy. Results In the control group, the CD4+ cells in AP rats was significantly decreased and the ratio of CD4+/CD8+ also decreased. After 7days of HBO therapy,compared with the control group, the CD4+ lymphocytes of peripheral blood in the treatment group markedly increased( P ＜0.01 ). The CD8+ lymphocytes also increased to a certain extent. And the CD4+/CD8+ ratio of peripheral blood was obviously increased(P ＜0. 01 ). Also more severe pathological changes appeared in the untreated group than in the treatment group. Conclusion Hyperbaric oxygen therapy could improve the oxygen supply in acute panereatitis, regulate T cell immune function.

Objective To analyze the clinical key points of minimally invasive tracheostomy with percutaneous horn expansion applicated in ICU,and to discuss the problems encountered in minimally invasive surgery and the solutions.Methods The clinical data of 25 patients of minimally invasive tracheostomy with percutaneous horn expansion in ICU were analyzed retrospectively.Results Twenty-one patients with minimally invasive tracheostomy with percutaneous horn expansion were successfully performed in 25 patients of ICU (no incision sputum,subcutaneous emphysema,pneumothorax and other complications),2 patients had more postoperative bleeding,2 patients were difficult to imbedding catheter,of which 1 case abandoned the catheter and received conventional tracheotomy.Conclusion Percutaneous horn expansion minimally invasive tracheostomy has the advantages of small incision,less injury,less operative time,less blood loss and low incidence of complications.However,ICU patients are in severe condition and easy to change.Adequate preoperative preparation,controlling the key steps in the operation can find a solution to the problme.

ObjectiveTo evaluate the influence of different hemoperfusion (HP) intensity on 7-day and 28-day mortality for patients with paraquat (PQ) poisoning, and examine the factors that may affect the decision of the clinicians to prescribe a high intensity HP.Methods A retrospective cohort study was conducted. The patients admitted to the department of critical care medicine of Anhui Provincial Hospital Affiliated to Anhui Medical University with the diagnosis of PQ poisoning from August 2012 to August 2014, fulfilling the following criteria were enrolled in the study: older than 18 years, interval from ingestion PQ to hospital admission shorter than 12 hours, and receiving HP treatment within 24 hours, and expecting surviving time exceeding 24 hours after admission, and data of the patients available for at least 28 days after admission. Depending on the intensity of HP, patients were assigned to either lower intensity HP group (LHP, defined as receiving HP for less than 4 hours, 2 columns) or higher intensity HP group (HHP, defined as receiving HP longer than 6 hours, 3 columns). Patients' data were retrieved from hospital's electronic database after hospital admission, and the results at 7th day and 28th day were recorded. Multiple logistic regression model was used to determine factors with which the clinician decided to choose the intensity of HP for the patients, and Cox regression model was used to evaluate 7-day and 28-day mortality.Results Data of 60 patients was finally available for this study. LHP group consisted of 28 patients, with a 7-day mortality of 53.6%(15 patients) and 28-day mortality of 64.3% (28 patients); 32 patients were assigned to HHP group with 7-day mortality of 43.8% (14 patients) and 28-day mortality of 62.5% (20 patients). Twenty-eight patients constituted as the HHP group, with higher PQ concentration in plasma, higher incidence of respiratory alkalosis and acute kidney injury (AKI), and higher level of lactate (Lac) compared with LHP group. However, a lower 7-day mortality was observed in the HHP group. Multiple logistic regression model indicated that at admission, interval from ingestion PQ to hospital admission longer than 4 hours [odds ratio (OR) = 1.461, 95% confidence interval (95%CI) = 1.132-1.435,P< 0.001], younger than 50 years old (40-49 years old:OR = 1.397, 95%CI = 1.251-1.703,P = 0.002;< 40 years old:OR = 1.701, 95%CI = 1.253-1.836,P< 0.001), PQ plasma concentration≥ 2 mg/L (OR = 3.140, 95%CI = 1.511-3.091,P< 0.001), white blood cell (WBC)> 10×109/L (OR = 1.222, 95%CI = 1.032-1.275, P = 0.018), Lac> 2.0 mmol/L (OR = 2.392, 95%CI = 2.090-2.734,P< 0.001), AKI on admission (stage 2:OR = 2.350, 95%CI = 2.160-3.910,P< 0.001; stage 3:OR = 2.821, 95%CI = 1.932-3.651,P< 0.001), accompanying hypoxia (OR = 2.420, 95%CI = 2.131-2.662,P = 0.003) were more likely to receive higher intensity of HP. Furthermore when compared with patients survived for 28 days, patients who were older, with higher levels of PQ concentration at admission or after 4 hours of HP, accompanied by AKI, increased serum creatinine (SCr), WBC, Lac, and acute physiology and chronic health evaluationⅡ (APACHEⅡ) score, lower arterial partial pressure of carbon dioxide (PaCO2) and lower pH value were more likely to die. After adjusted for con-variables in COX regression model, HHP was associated with lower 7-day mortality after admission [hazard ratio (HR) = 0.843, 95%CI = 0.732-0.971, P = 0.032], but devoid of lowering effect on 28-day mortality rate (HR = 0.930, 95%CI = 0.632-1.411,P = 0.423). In addition, age> 50 years old (HR = 1.282, 95%CI = 1.050-1.530,P = 0.043), PQ concentration increased by 1 mg/L (HR = 2.521, 95%CI = 2.371-3.825,P = 0.012), AKI on admission (HR = 3.850, 95%CI = 2.071-5.391,P< 0.001), WBC>10×109/L (HR = 1.932, 95%CI = 1.782-2.171,P = 0.006), Lac> 2.0 mmol/L (HR = 2.981, 95%CI =2.210-3.792,P = 0.002), and PaCO2< 35 mmHg (HR = 1.772, 95%CI = 1.483-2.516,P = 0.008; 1 mmHg =0.133 kPa) were independent risk factors for 28-day mortality.Conclusions Though HHP was helpful in lowering mortality rate in patients with PQ poisoning within 7 days, it did not influence on 28-day mortality. Clinicians' decisions on HP intensity need further investigation, and more perfect clinical evaluation system is required for reasonable use of expensive medical resources such as HP.

Objective:To investigate the clinical application of noninvasive high frequency oscillatory ventilation(nHFOV)and heated humidified high flow nasal cannula(HHHFNC)in sequential ventilator evacuation of preterm infants with very low birth weight with respiratory distress syndrome(RDS).Methods:A total of 88 preterm infants of very low birth weight with RDS were enrolled in the study, who had received endotracheal intubation invasive ventilation and were ready to be replaced by non-invasive ventilation at neonatal intensive care unit(NICU)of Xuzhou Central Hospital from May 2017 to January 2020.All premature infants were routinely treated with caffeine citrate.They were divided into two groups through random number table: nHFOV/HHHFNC group(45 cases)and continuous positive airway pressure(nCPAP)/oxygen hood group(43 cases). nHFOV was given after invasive ventilator removal and HHHFNC transition was followed after nHFOV withdrawal in the nHFOV/HHHFNC group, while nCPAP was given after invasive ventilator removal and oxygen hood was followed after nCPAP withdrawal in the nCPAP/oxygen hood group.The main observation consequences were compared with arterial blood gas indexes after invasive ventilator evacuation, weaning effect and the incidence of related complications.Results:(1)There were no statistically differences between the two groups in terms of gender, gestational age, birth weight, Apgar score at 1 min and 5 min after birth, the number of glucocorticoid usage in 24 h before delivery, the number of pulmonary surfactant usage, invasive ventilation time and RDS grading( P>0.05). (2)The PaO 2, PaCO 2and oxygenation index(OI=100×MAP×FiO 2/PaO 2)of the nHFOV/HHHFNC group at 1 h and 24 h after invasive ventilator removal showed significant difference compared with the nCPAP/oxygen hood group( P<0.05). The differences as the following listed were statistically significant( P<0.05)between the two groups, including the failure rate of invasive ventilation weaning during 72 h [9%(4/45)vs.26%(11/43)], the incidence of frequent apnea [7%(3/45)vs.23%(10/43)], the failure rate of nHFOV and nCPAP noninvasive ventilation weaning [4%(2/45)vs.21%(9/43)], the oxygen-used time [12.02(9.08~12.31)d vs.14.44(11.32~13.26)d] and the incidence of nasal injury [4%(2/45)vs.26%(11/43)]. (3)The time of the first noninvasive ventilation of nHFOV and nCPAP, the incidences of lung air leakage, neonatal necrotizing enterocolitis, grade Ⅲ to Ⅳ intraventricular hemorrhage, above stageⅡretinopathy, bronchopulmonary dysplasia and the mortality rate between the two groups showed no statistical significance( P>0.05). Conclusion:nHFOV and HHHFNC used in the sequential ventilator evacuation of RDS in preterm infants with very low birth weight could improve oxygenation, reduce CO 2retention, improve the success rate of machine weaning and reduce the occurrence of apnea and nasal injury.

OBJECTIVETo investigate the association between plasminogen activator inhibitor (PAI)-2 expression and invasive potential in hepatocellular carcinoma (HCC) cells.

METHODSThe HCC cell lines with high, low, and non-metastatic potentials, namely MHCC97-H, MHCC97-L, and SMMC-7721 respectively, were cultured in vitro. Matrigel invasion assay and Western blot of PAI-2 protein expression were conducted.

RESULTSThe number of invaded cells in MHCC97-L was significantly higher than that in SMMC-7721 (P=0.005), whereas that in MHCC97-H was higher than in MHCC97-L (P=0.017) and SMMC-7721 (P=0.001). Contrarily, PAI-2 protein expression was gradually reducing from SMMC-7721, MHCC97-L, to MHCC97-H (MHCC97-H vs. MHCC97-L, P<0.001; MHCC97-H vs. SMMC-7721, P=0.001; MHCC97-L vs. SMMC-7721, P=0.001). The Pearson's correlation analysis revealed a significant negative association between invaded cell number and PAI-2 expression (r=-0.892, P=0.001).

CONCLUSIONPAI-2 expression may be negatively associated with the invasive potential of HCC.

Objective To investigate the protective effect of Gabexate mesilate(GM)on D-galactosamine- lipopolysaccharide-indneed acute liver failure in rats.Methods The model of acute liver failure in rats was produced by injection of D-galactosamine(D-GalN)and lipopolysaccharide(LPS).The alanine aminotransferase(ALT),aspartate aminotransferase(AST)in serum and malondiadehyde(MDA)content,superoxide dismutase(SOD)and glutathione peroxidase(GSH-PX)activities in liver homogenate were assayed by spectrophotometry.The levels of turnout necrosis factor-?(TNF-?),interleukin-?(IL-?)and interleukin-6(IL-6)were determined by ELISA method.Hepatic pathological examination was observed.Results 25 mg?kg~(-1),50mg?kg~(1),100 mg?kg~(-1) of GM significantly decreased the serum transaminase activities,the infiltration of inflammatory cells,and MDA content,hut didn't reduce SOD and GSH- PX activities in liver homogenate.GM significantly reduced TNF-?,IL-1?and IL-6 levels in serum.Conclusions GM showed significant protective effects on acute liver failure in rats.

Objective:To study the metabolism of pedunculoside treated with rat intestinal bacteria in vitro. Methods:Pedunculo-side and rat intestinal bacteria were incubated in vitro for 0, 4, 8, 24 and 48 hours under anaerobic condition. After extracted repeat-edly by ethyl acetate, the metabolites in the incubation media were qualitatively and quantitatively analyzed by HPLC. Results:Totally 90. 8% of pedunculoside was transformed to M2 after incubated with rat intestinal bacteria in vitro for 48 hours, and a detailed compari-son of HPLC profiles between M2 and rotundic acid showed M2 was rotundic acid. Conclusion: Pedunculoside can be metabolized to rotundic acid by rat intestinal bacteria in vitro.

Objective To observe changes of luteinizing hormone (LH), follicle-stimulating hormone (FSH) and testosterone (T) in umbilical vein blood between male and female neonates, and assess the effect of serum LH, FSH and T on fetal growth.Methods Umbilical vein blood was obtained from 130 neonates (64 females and 66 males) in the second hospital of changshu city. According to birth weight, 130 neonates were divided into 3 groups: macrosomia (n=28), intrauterine growth restriction (IUGR) (n=31) and normal neonates (n=71). The serum levels of LH, FSH and T were measured by radioimmunoassay.Results 1.The levels of LH, FSH and T in umbilical vein blood were significantly higher in male neonates than those in females (P

Objective To explore the correlation between-173G/C gene polymorphism of macrophage migration inhibitory factor(MIF) and Henoch-Schonlein purpura(HSP),Henoch-Schonlein purpura nephritis(HSPN) in children in Jiangxi Province.Methods One hundred and thirty-one ethnic Han children with HSP were enrolled,including 80 children with concurrent nephritis(HSPN group) and 51 children without nephritis(HSP without nephritis group).One hundred and five healthy children were used as the healthy control group.Germline DNA was extracted from peripheral blood by Promega blood genomic DNA kit.Polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP) was used for genotyping the-173G/C polymorphism of MIF.Genotype distribution and allele frequencies were obtained by direct counting.Statistical analysis was performed by using SPSS 11.5 software.Allele and genotype distribution were compared by using the chi-square test.The relative risk of allele was described by odds ratios(OR) and 95% confidence intervals(95%CI).Results Three genotypes(GG,GC,CC) were detected in MIF-173 G/C.GG,GC genotypes were detected in HSP without nephritis and healthy control group.GG,GC and CC genotypes were detected in HSPN group.Mutant genotype(37.5%) and C allele frequency(20.0%) in HSPN group were significantly higher than those in healthy control group(20.0% and 10.0%,respectively)(?2=6.964,7.400,Pa

Objective To explore the change of glyoxalase I in type 2 diabetic ocular muscles palsy (DOMP) and its associations with advanced oxidation protein products (AOPP) and oxidative stress. Methods 58 DOMP patients, 50 T2DM and 30 normal controls were enrolled in this study. Levels of blood lipids, fasting blood glucose, hemoglobin A1c, insulin, serum glyoxalase I, AOPP, malondialdehyde (MDA), superoxide dismutase (SOD) and total antioxidant capacity (T-AOC) were measured. Homeostasis model assessment was performed to evaluate the status of insulin resistance (IR). Results Levels of high-density lipoprotein cholesterol, SOD and T-AOC were positively correlated with glyoxalase I and inversely associated to AOPP. Levels of triglycerides , low-density lipoprotein cholesterol , fasting blood glucose , hemoglobin A1c , IR and MDA were negatively correlated with glyoxalase I and positively related to AOPP. AOPP had an inverse association with glyoxalase I (r = -0.823, P < 0.001). Multivariate regression analysis showed that serum levels of glyoxalase I (Sβ = 0.554) and AOPP (Sβ= -0.469) were influencing factors of groups. Conclusion Serum glyoxalase I levels were significantly decreased in DOMP and correlated with AOPP and levels of oxidative stress , which suggest that glyoxalase I could play crucial roles on the development of DOMP.