Acute kidney injury and acute respiratory distress syndrome are the most common organ failure in intensive care unit with high mortality.Both lung and kidney are involved in maintaining acid-base balance in the body, and both organs contain a large vascular network, which is the primary target organ for distant organ effects in the failure of each other.This article reviewed the possible pathogenesis of lung-kidney cross-talk in renal injury or acute respiratory distress syndrome, in order to deepen the understanding of both diseases and improve the prognosis.

ObjectiveTo evaluate the therapeutic efficiency and outcomes of vertical condensation of warm gutta-percha obturation using the four-handed technique.MethodsA split-tooth model constructed with lateral grooves and depressions was used to compare vertical condensation of warm gutta-percha obturation with and without the four-handed technique.Respectively 10 times of obturation were done in the four-handed group and the independent operation group.The operation time and defect replication quality were recorded.Evaluation of defect replication quality was on an ordinal scale 0 to 2 grade based on how much each defect was replicated.The results were statistically analyzed.ResultsThere were signiticant differences in treatment time between the four-handed group and theindependent operation group,as well as in treatment outcomes between two groups.ConclusionsUse of the four-handed technique can improve therapeutic efficiency and outcomes of vertical condensation of warm gutta-percha obturation.

Objective To evaluate the methods of measuring platelet-associated antibody PAIgG/ PAIgA/ PAIgM by flow cytometry(FCM) and enzyme linked immunosorbent assay(ELISA), and to investigate their diagnostic value for patients with idiopathic thrombocytopenic purpura(ITP).Methods With FCM and ELISA respectively, PAIg on the platelet membrane and in plasma were measured in 19 patients with ITP and 17 healthy volunteers, and were compared with each other in order to find out whether there were differences in these groups.Results FCM and ELISA measurement in patients with ITP were significantly higher than those in control group (P0.05). Compared with the results of ELISA, the positive percentage of PAIgG measured by FCM(84%) in ITP patients was slightly higher than that by ELISA(79%).Conclusion The platelet-associated antibodies of PAIgG/ PAIgA/ PAIgM, especially PAIgG,are important for diagnosing ITP. FCM, in combination with ELISA, may improve the reliability and the positive percentage of detection in ITP patients.

Objective To study effect of pentanuclear copper complexes of imino acetic acid two aromatic derivatives on oxidative cutting DNA. Methods Synthesized complexes later, protonation constants and the stability constants of the complexes were determined by potentiometric titration method, the cutting DNA was studied by agarose gelelectrophoresis.Results Under physiological conditions, complexes H4L1, H4L2, between H6L3 and Cu2 +coordination capability was stronger; three carboxylic multi copper complexes in Cu2 + concentration cutting efficiency were higher than the corresponding mononuclear copper complexes, synergistic effect exists between Cu2 + Center; H6L3 complexes of the three DNA cut the highest efficiency, complex H4L1 was followed, complex H4L2 cutting efficiency was the lowest.Conclusion Change the complex chelating ligands has great influence on the properties of complex, which provides a theoretical basis for the design and synthesis of copper nucleases reasonable.

Objective To investigate the effect of proanthcyaindin on angiogenesis of rats with ischemic hindlimb.Methods Twelve male SD rats were randomized divided into control group (n =6) and proanthcyaindin group (PC group,n =6).Lower limb ischemia rat model was establish,rats in both group were administration by oral daily,and PC group was given proanthocyanidins 200 mg/(kg · d),while the control group received the same volume of saline.Forteen days after surgery,ischemic tissues of adductor were collected for several tests including the expression of CD31 in the ischemic muscle tissue and the number of new blood vessels by immunohistochemical staining,hypoxia inducible factor-1 protein expression by western blot,and vascular endothelial growth factor level test by enzyme-linked immunosorbent assay.Results The capillary count showed that the angiogenesis situation of PC group was (69.67 ±3.11)/HP,higher than that in control group((111.00 ± 3.11)/HP,t =13.350,P ＜ 0.0001).The HIF-1 protein expression in PC group was (1.90 ± 0.25),remarkable higher than that in control group (0.54 ± 0.21,t =4.183,P =0.0058).Compared with control group,VEGF level in PC group increased((432.86 ± 13.00) μg/L vs.(326.68 ± 11.08) μg/L,t =6.216,P ＜0.0001).Conclusion Proanthcyaindin plays a positive role in angiogenesis after ischemia.PC may induce up-regulation of HIF-1 and VEGF,and then promote the formation of endovascular through multiple signaling pathways consequently.

Objective:To study the effect of Rhizoma Coptidis apozem on expression of AMP-activated protein kinase(AMPK) in skeletal muscle of metabolic syndrome rats. Methods:The models were established by administering high fat diet. Rats were randomly divided into five group: normal control group, metabriolic syndome group, Rhizoma Coptidis apozem group, Berberine group, Metformin group. To estimate insulin resistance by euglycemic hyperinsulinemic glucose clamp(GC) tecchnique. To estimate expression of AMPK by using Western blot. Results: Compared with metabolic syndrome group, Rhizoma Coptidis apozem group had higher M-value, lower wet weight of innards fat, and higher protein level of p-AMPK-?. Conclusion: Rhizoma Coptidis apozem can improve insulin resistance, decrease innards fat, and regulate up expression of AMPK.

Objective To observe the expression changes of 5-hydroxytryptamine (5-HT),brainderived neurotrophic factor (BDNF) in rats with chronic manganism.Methods Sixty healthy male Sprague-Dawley rats were randomly divided into control group (n =15) and experimental group (n =45).The experimental group was divided into three subgroups:low-dose group (n =15),middle-dose group (n =15),high-dose group (n =15).The rats in control group were given intraperitoneal injection of normal saline while the rats in low-dose group,middle-dose group,high-dose group were given intraperitoneal injection of 5 mg/kg,15 mg/kg and 25 mg/kg manganese chloride tetrahydrate,respectively for 5 days oncea week and lasted for 12 weeks.The depressive behavior changes of rats were observed by sucrose preference test and open field test.The concentrations of manganese in the striatum of rats were detected by inductively coupled plasma-atomic emission spectrometry.The expression of 5-HT in frontal cortex,hippocampus of rats was determined by high performance liquid chromatography.The expression of BDNF in frontal cortex,hippocampus of rats was examined by Western blotting.The expression of BDNF mRNA was detected using real-time fluorescence quantitative polymerase chain reaction.Results The chronic manganese poisoning rats presented depression-like behavior based on the sucrose preference test and open field test,which was more distinct in high-dose rats.As compared with the control group (frontal cortex (459.65 ± 16.81) ng/g,hippocampus (323.92 ± 17.41) ng/g;tissue wet weight),the expressions of 5-HT were significantly decreased in frontal cortex ((423.45 ± 17.19) ng/g,(376.89 ± 18.87) ng/g,(280.17 ± 25.46) ng/g),hippocampus ((265.71 ± 17.89) ng/g,(214.35 ±23.63) ng/g,(172.67 ± 18.24) ng/g) of the experimental group (F =132.68,69.66,both P ＜ 0.05).As compared with the control group (frontal cortex 0.962 ±0.111,hippocampus 0.873 ± 0.101;the expressions of BDNF were significantly decreased in frontal cortex (0.855 ± 0.106,0.649 ± 0.112,0.506 ± 0.121) and hippocampus (0.731 ± 0.092,0.626 ±0.104,0.544 ± 0.113) with the increasing concentration of MnCl2 which showed dose dependence (F =13.26,18.54,both P ＜ 0.05).As compared with the control group (frontal cortex 0.000 87 ± 0.000 07,hippocampus 0.000 82 ± 0.000 09),the expressions of BDNF mRNA were decreased significantly in frontal cortex (0.000 71 ± 0.000 06,0.000 48 ± 0.000 03,0.000 36 ± 0.000 03) and hippocampus (0.000 57 ± 0.000 05,0.000 49 ± 0.000 04,0.000 38 ± 0.000 05) in the treated group with the increasing concentration of manganese (F =18.46,12.76,both P ＜ 0.05).Conclusion Rats with chronic manganese poisoning could present depression-like behavior and the expression of 5-HT and BDNF is decreased in the frontal cortex and hippocampus with the increased accumulation of manganese.

OBJECTIVETo study the changes in the expression of divalent metal transporter 1 (DMT1) and ferroportin 1 (FP1) in the substantia nigra (SN) of rats with manganese-induced parkinsonism.

METHODSEighty Sprague-Dawley rats were randomly divided into four groups. Rats in the control group were injected intraperitoneally with saline solution. Rats in the low-dose, medium-dose, and high-dose groups were injected intraperitoneally with 5, 15, and 20 mg/kg MnC12 solution, respectively, for 16 weeks. Three behavioral tests were performed at the 16th week. The concentration of Mn2+ in the SN was determined by inductively coupled plasma-atomic emission spectrometry (ICP-AES), and the positive expression of tyrosine hydroxylase (TH) was measured by immunohistochemical staining to determine whether rats with manganese-induced parkinsonism were successfully produced. The expression of DMT1 and FP1 in SN was measured by immunohistochemical staining and fluorescent quantitative polymerase chain reaction.

RESULTSRats with manganese-induced parkinsonism were successfully produced using the above method. Compared with that in the control group, the concentrations of Mn2+ in the SN of rats exposed to 5, 15, and 20 mg/kg Mn2+ were significantly higher (1.72?0.33 vs 0.56 ± 0.20 µg/g, P<0.01; 2.92±0.77 vs 0.56±0.20 µg/g, P<0.01; 5.65±1.60 vs 0.56±0.20 µg/g, P<0.01). The mean ODs of TH-positive cells in the SN of rats exposed to 5, 15, and 20 mg/kg Mn+ were significantly lower than that in the control group (0.054±0.008 vs 0.109±0.019, P<0.01; 0.016±0.004 vs 0.109±0.019, P<0.01; 0.003±0.001 vs 0.109±0.019, P<0.01). Compared with that in the control group, the mean optical densities (ODs) of DMT1-positive cells in the SN of rats exposed to 15, and 20 mg/kg Mn2+ were significantly higher (0.062±0.004 vs 0.015±0.007, P<0.01; 0.116±0.064 vs 0.015±0.007, P<0.01). The mean ODs of FP1-positive cells in the SN of rats exposed to 5, 15, and 20 mg/kg Mn2+ were significantly lower than that in the control group (0.092±0.011 vs 0.306±0.081, P<0.01; 0.048±0.008 vs 0.306±0.081, P<0.01; 0.008±0.002 vs 0.306±0.081, P< 0.01). Rats exposed to 15 and 20 mg/kg Mn2+ had significantly higher expression of DMT1 mRNA in the SN than those in the control group (0.052±0.0126 vs 0.001±0.0004, P<0.05; 0.124±0.0299 vs 0.001±0.0004, P<0.05). However, rats exposed to 5, 15, and 20 mg/kg Mn2 had significantly lower expression of FP1 mRNA in the SN than those in the control group (0.059±0.0076 vs 0.162±0.0463, P<0.05; 0.033±0.0094 vs 0.162±0.0463, P< 0.05; 0.002±0.0007 vs 0.162±0.0463, P<0.05).

CONCLUSIONThe increased expression of DMT1 and reduced expression of FP1 may be involved in the processes of Mn2+ accumulation in the SN and dopaminergic neuron loss in rats with manganese-induced parkinsonism.

Animals ; Cation Transport Proteins ; metabolism ; Disease Models, Animal ; Manganese ; adverse effects ; Parkinsonian Disorders ; chemically induced ; metabolism ; RNA, Messenger ; Rats ; Rats, Sprague-Dawley ; Substantia Nigra ; metabolism ; physiopathology

Objective To study the outcome of surgical therapy of perforation of gastric cancer. Methods The clinical data of 37 cases with perforation of gastric carcinoma which underwent different surgical procedures were analyzed retrospectively. Among them,24 cases underwent partial gastrectomy,8 cases underwent radical mastectomy,4 cases had repair of perforation. 1 case received non-operative therapy. Results The preoperative diagnotic rate was 24.3%,and misdiagonsis rate was 75.7%. The perioperative mortality rate was 5.4%,including 1 case that underwent repair of perforation. The post-operative complication rate of patients undergoing palliative gastrectomy,radical gastric cancer operation and repair of perforation was 41.7%,25.0% and 75.0%,respectively,and the mean survival time was 25 months,29 months and 3.0 months,respectively.The partial gastrectomy and radical mastectomy patients had significantly better outcomes than those who underwent repair of perforation or received non-operative therapy.Conclusions For patients with perforation of gastric cancer with resectable lesions and who are in good general coaditon,a one-stage radical gastric resection or palliative subtotal gastrectomy can be performed.

Objective:To explore the correlation between enhanced CT quantitative parameters and malignant biological behavior and prognosis of colon cancer.Methods:From February 2017 to October 2019, 100 patients with colon cancer in Anhui Wanbei Coal-Electrivity Group Gernal Hospital were selected as the research subjects, and all performed enhanced CT examination. The serum tumor markers carcinoembryonic antigen (CEA), carbohydrate antigen 19-9 (CA19-9) levels were detected. According the mean value of CEA, CA19-9, the patients were divided into different group, and CEA< 28.36 pmol/L was considered to below level, ≥ 28.36 pmol/L was high; CA19-9<40.26 pmol/L was considered to below level, ≥ 40.26 pmol/L was high. The quantitative parameters of enhanced CT in patients with colon cancer with different serum CEA and CA19-9 levels and different pathological indicators (CT scan value, enhanced value, degree of enhancement) were compared. The correlation between serum tumor marker levels, malignant biological behavior of colon cancer and quantitative parameters of enhanced CT were explored. After 12-months′ followed-up, the clinical data of patients with different prognosis and enhanced CT parameters were counted. The factors affecting the prognosis of colon cancer patients and the predictive value of enhanced CT quantitative parameters on the prognosis of patients were explored.Results:The CT scan value, enhancement value and enhancement degree of colon cancer patients with low levels of serum CEA and CA19-9 were lower than those with high levels: (30.16 ± 5.14) HU vs. (38.51 ± 5.72) HU, (55.74 ± 8.12)HU vs. (78.62 ± 8.97) HU, (25.58 ± 3.60) HU vs. (40.11 ± 3.14) HU, the differences were statistically significant ( P<0.05). There was a positive correlation between serum CEA and CA19-9 levels in patients with colon cancer and CT scan value, enhancement value, and degree of enhancement ( P<0.05). The CT enhancement value and enhancement degree of colon cancer patients were related to Dukes staging, differentiation degree, lymph node metastasis and lymphatic infiltration in colon cancer patients. The CT scan value was related to Dukes staging, lymph node metastasis and lymphatic infiltration of colon cancer patients ( P<0.05). The risk factors for death of colon cancer patients included age, Dukes staging, degree of differentiation, lymph node metastasis, lymphatic invasion, CT scan value, enhancement value, and degree of enhancement ( P<0.05). The area under the curve (AUC) of CT scan value, enhancement value, and enhancement degree combined to predict the prognosis of colon cancer patients was 0.873, which was greater than the single prediction of each parameter. The best sensitivity and specificity of combined prediction were 76.92% and 88.37%, respectively. Conclusions:There is a certain correlation between the enhanced CT quantitative parameters and the malignant biological behavior of patients with colon cancer. The increased detection value is risk factor for the prognosis.