Optimization of preparation conditions and performance of a new degradable soil water retaining agent.

Using polyaspartic acid (PAsp) and bentonite (BT) as the main raw materials, a new type of degradable soil water retaining agent (PAsp-AA/BT) was synthesized by microwave radiation. The optimum synthesis conditions and comprehensive properties of PAsp-AA/BT were discussed and the structure and surface characteristics of PAspsp-AA/BT were characterized by FTIR, SEM, XRD and TGA in the paper. The results showed that the optimum synthesis conditions of PAsp-AA/BT were as follows: the dosages of polyaspartic acid (PAsp), bentonite (BT), initiator potassium persulfate, crosslinking agent N,N'-methylene bisacrylamide was 5, 3, 0.3, 0.03%, respectively, the neutralization degree of acrylic acid was 75%, and the microwave power was 490W. Under this condition, the absorption ratio of the synthesized PAspsp-AA/BT in deionized water and 0.9% NaCl solution was 953 and 164 g/g, respectively. The synthesized PAsp-AA/BT had a high water absorption rate, good water retention and repeated water absorption, and the degradation rate in soil within 30 days reached 32.75%, with good degradation effect. The analysis of SEM, FT-IR, XRD and TGA showed that: the surface of PAsp-AA/BT was rough and had obvious pore structure, which was conducive to the diffusion of water molecules; polyaspartic acid, bentonite and acrylic acid were polymerized; the cross-linking structure was formed between polyaspartic acid, bentonite and acrylic acid; the product of PASP-AA/BT had good thermal stability. This study provides a new soil water retaining agent, which is helpful for the better development of soil water retaining agent research.

Correlation between 23 metals and metalloids elements in the urine and thyroid function of traffic police / 公共卫生与预防医学

Objective To investigate the correlation between 23 metals and metalloids elements in the urine and thyroid function indicators in the blood of traffic police. Methods A cross-sectional study was performed to assess the effects of 23 metals and metalloids elements in the urine on blood thyroid function indicators in 166 traffic policemen (122 field staff and 44 internal staff) in Wuhan, Hubei Province. Each subject received an occupational health examination. Results After multiple corrections for false detection rates, in the polymetallic model, the levels of urinary manganese and urinary uranium were positively correlated with the levels of thyroid peroxidase antibody (TPOAb) in the blood (β = 66.57, 95% CI 2.92-130.22, P = 0.040 and β = 62.43, 95% CI 14.37-110.49, P = 0.011), and the level of urinary uranium was positively correlated with thyroid stimulating hormone (TSH) levels in the blood (β = 6.20, 95% CI 2.68-9.72 , P = 0.001). Urinary uranium level was negatively correlated with free thyroxine level in the blood (FT4) (β = -2.03, 95 % CI (-3.67 )- (-0.39), P = 0.015), and urinary lead level was negatively correlated with blood TSH level (β = -4.59, 95% CI (-8.67) - (-0.51), P = 0.027). Conclusion Manganese exposure is related to the increase of TPOAb level in blood, uranium exposure is related to the increase of TPOAb and TSH levels and the decrease of FT4 level in blood, and lead exposure is related to the decrease of TSH level in blood, suggesting that more attention should be paid to the effects of heavy metals on the thyroid of traffic police.

Extracellular HMGB1 Induced Glomerular Endothelial Cell Injury via TLR4/MyD88 Signaling Pathway in Lupus Nephritis.

Previously, our study showed that HMGB1 was significantly elevated in the blood and located in the glomerular endothelium in LN patients. But whether extracellular HMGB1 is involved in the injury of glomerular endothelial cells (GECs) in LN still needs further investigation. Firstly, we detected the levels of SDC-1, VCAM-1, and proteinuria in LN patients and MRL/lpr mice and analyzed their correlations. Then, HMGB1 and TLR4/MyD88 were inhibited to observe the shedding of glycocalyx and injury of GECs in vivo and in vitro. Our results showed that HRGEC injury and SDC-1 shedding played an important role in the increase of permeability and proteinuria formation in LN. Additionally, inhibition of extracellular HMGB1 and/or downstream TLR4/MyD88/NF-κB/p65 signaling pathway also alleviated GEC monolayer permeability, reduced the shedding of the glomerular endothelial glycocalyx, improved the intercellular tight junction and cytoskeletal arrangement, and downregulated the NO level and VCAM-1 expression. These results suggested that extracellular HMGB1 might involve in GEC injury by activating the TLR4/MyD88 signaling pathway in LN, which provided novel insights and potential therapeutic target for the treatment of lupus nephritis.

Death cause and life loss analysis of permanent residents in Enshi City during 2013-2018 / 公共卫生与预防医学

Objective To analyze the basic characteristics and variation trend of death causes of permanent residents in Enshi City during 2013-2018, to assess the burden of different diseases, and to provide a scientific basis for formulating disease prevention and control strategies. Methods The death monitoring data of permanent residents in Enshi City, Hubei Province from 2013 to 2018 was collected. The crude mortality, standardized mortality, life expectancy, potential years of life loss (PYLL), standard potential years of life loss (SPYLL), average years of life lost (AYLL), and annual percentage change (APC) were calculated to describe the distribution and trend of death causes. Results The average annual crude death rate and standardized death rate of residents in Enshi City from 2013 to 2018 were 679.43 per 100 000 and 615.02 per 100 000, respectively. The top 5 causes of death were circulatory system diseases, respiratory system diseases, malignant tumors, injuries, and digestive system diseases, accounting for 91.2% of the total deaths. Analysis of life expectancy found that the average life expectancy of local residents from 2013 to 2018 was 78.02 years, and the value in the male group (75.57 years) was lower than that in the female group (80.78 years). Life loss analysis revealed that PYLL caused by various diseases was 171 620 person-years, SPYLL was 171 284.62 person-years, and AYLL was 15.03 years/person in Enshi City from 2013 to 2018. Among all the death causes, the top five in terms of life loss were injuries, malignant tumors, circulatory diseases, respiratory diseases and digestive diseases. Conclusion From 2013 to 2018, the death rate of residents in Enshi City was relatively higher compared with those in other cities in China, the average annual crude death rate was on the rise, and the average annual standardized death rate was on the decline, indicating a highly ageing region. Chronic diseases such as circulatory system diseases, malignant tumors, and respiratory diseases, as well as injuries were the main death causes and caused a heavy burden of diseases, which should be the focus of future prevention and control work. Considering the higher levels of death and life loss indicators of male residents than those of women, targeted prevention and control measures should be taken to narrow the gap between men and women and improve the overall life quality of the whole population.

Effect of high-flow nasal cannula oxygen therapy and non-invasive ventilation on patients with acute respiratory failure after gastrointestinal operation under general anesthesia: a prospective randomized controlled trial / 中华急诊医学杂志

objective:To observe the effect of high-flow nasal cannula (HFNC) oxygen therapy on patients with acute respiratory failure after gastrointestinal operation under general anesthesia and its efficacy on prognosis.Methods:Totally 107 patients with acute respiratory failure after gastrointestinal operation under general anesthesia in ICU of our hospital were selected from January 2017 to June 2019. Patients were randomly divided into the HFNC group ( n=57) and non-invasive ventilation (NIV) group ( n=50). The changes of pH, PaO 2, PaCO 2, PaO 2/FiO 2, SpO 2, heart rate (HR), respiration rate (RR), and intra-abdominal pressure (IAP) before and after oxygen treatment were compared. The differences of comfort level, duration of oxygen treatment, re-intubation rate, 48-h pulmonary infection rate, incidence of anastomotic fistula, length of stay in ICU, length of hospital stay, hospitalization cost, and 28-day mortality were compared between the two groups. The t test of two independent samples was used for the comparison of normal measurement data. Non-normal data were expressed by median (quartile), fractional count data by case number (percentage), and comparison between the two groups by Chi-square test. Results:PaO 2, PaCO 2, PaO 2/FiO 2 and SpO 2 were not significantly different after 2-h oxygen therapy. PH of the HFNC group was lower than that of the NIV group (7.39 ± 0.04 vs. 7.42 ± 0.03), PaO 2, PaCO 2, PaO 2/FiO 2 and SpO 2 were higher than that of the NIV group [ (89.22 ± 8.70) vs. (84.99± 9.76) mmHg, (41.3 ± 3.43) vs. (39.34 ± 4.21) mmHg, (250.07 ± 18.34) vs. (237.89±19.38) mmHg, (96.14 ± 2.19) vs. (94.78 ± 2.76)%, P <0.05]; pH, PaO 2, PaCO 2, PaO 2 /FiO 2 and SpO 2 were significantly higher in the HFNC group than those in the NIV group [ (7.39 ± 0.04) vs. (7.36 ± 0.04) ; (97.2 ± 12.45) vs. (93.82 ± 12.54) mmHg; (40.84 ± 5.22) vs. (45.10 ± 6.40) mmHg; (277.16 ± 13.98) vs. (248.86 ± 12.81) mmHg, (98.14 ± 1.64)% vs. (95.48 ± 2.71) %] after 12 h oxygen treatment. The HR, RR and IAP of the HFNC group were lower than those of the NIV group, and the differences were statistically significant ( P <0.05). The duration of oxygen therapy in the HFNC group was shorter than that in the NIV group [(32.01 ± 7.57) vs. (40.88 ± 8.89) h], the reintubation rate was lower than that in the NIV group (1.75% vs. 12%), the pulmonary infection rate within 48 h oxygen therapy was lower than that in the NIV group (8.78% vs.30%), and the length of stay in ICU was shorter than that in the NIV group [(5.61 ± 1.73) vs. (7.60 ± 2.31) d], and the hospitalization cost was lower than that in the NIV group ( t = 4.822, P <0. 05). Conclusions:HFNC can improve the oxygenation index of patients with hypoxemia after gastrointestinal operation under general anesthesia, reduce oxygen treatment time, reduced reintubation rate, reduce pulmonary infection rate within 48 h, and improve the prognosis.

Comparative study on synchronous adsorption of arsenate and fluoride in aqueous solution onto MgAlFe-LDHs with different intercalating anions.

In this study, a series of MgAlFe-LDHs (Cl-, NO3 -, intercalation, and calcined products of a CO3 2- interlayer) was synthesized and used for adsorption of arsenate and fluoride in individual contaminants and coexisting pollutant systems. Effects of various factors such as initial pH of solution, dosage of materials, coexisting ions, contact time, and initial pollutant concentrations were evaluated. Experimental results showed that different intercalating anions had a significant effect on adsorption performance of arsenate and fluoride in water. The adsorption of arsenate and fluoride on MgAlFe-CLDH, MgAlFe-Cl-LDH or MgAlFe-NO3-LDH can be described by different adsorption isotherm equations. During the simultaneous removal process, arsenate and fluoride competed for adsorption sites of the adsorbent materials, and the fluoride ions had advantages in the competitive adsorption on MgAlFe-Cl-LDH and MgAlFe-NO3-LDH. MgAlFe-NO3-LDH was used to adsorb arsenate and fluoride in coexisting pollution systems (the concentration of each pollutant was 2 mg L-1, the adsorbent dosage was 1.5 g L-1). The remaining arsenic concentration was reduced to less than 10 µg L-1 and the remaining fluoride ion concentration to below 20 µg L-1 which meets the World Health Organization's, EPA's and China's drinking water standards for arsenic and fluoride limits. A possible mechanism is discussed with support from further XRD, SEM, and XPS analysis of the materials after their adsorption.

Role of HMGB1 and TNFAIP3 involvedin mesangial cell proliferation of lupus nephritis / 中国药理学通报

Aim To investigate the mechanism of high mobility group protein B1(HMGB1)and tumor necrosis factor α-induced protein-3(TNFAIP3)involved in cell proliferation in lupus nephritis(LN)patients and human mesangial cells(HMC).Methods Immunofluorescence and immunohistochemistry technique were employed to detect HMGB1,TNFAIP3 and IκBα expression levels in glomerular cells of type Ⅳ LN patients.BrdU incorporation technology was used to detect cell proliferation level in HMC after stimulated by recombinant HMGB1.TNFAIP3 and IκBα expression levels in HMC were detected after HMGB1 stimulation by Western blot.Results The expression levels of HMGB1 and TNFAIP3 were increased in LN patients,while IκBα was decreased.HMC proliferation levels increased significantly after HMGB1 stimulation.At the same time,30 minutes after HMGB1 stimulation,the expression level of TNFAIP3 was significantly increased(P<0.05),while IκBα decreased(P<0.05)and then p65 increased significantly(P<0.05),compared with control group.Conclusion HMGB1 and TNFAIP3 are probably involved in mesangial cell proliferation by activating of NF-κB signaling pathways in LN pathogenesis.

miR-148a-3p overexpression contributes to glomerular cell proliferation by targeting PTEN in lupus nephritis.

The objective of this study was to investigate the role of miR-148a-3p in lupus nephritis (LN) based on data from previous studies and a microRNA assay. We evaluated the miR-148a-3p expression level in LN renal tissues and blood serum to determine its clinicopathological significance and effect on glomerular cell proliferation. Then, we collected renal glomeruli from LN mice and determined the miR-148a-3p, proliferating cell nuclear antigen (PCNA), and PCNA/Thy1 expression. We performed functional analyses of miR-148a-3p in vitro and in vivo. We also investigated the target gene of miR-148a-3p in LN. The results showed that miR-148a-3p expression levels were significantly higher not only in glomeruli but also in the blood serum during LN and increased in the glomeruli of LN mice and that at the same time there was positive correlation between miR-148a-3p and PCNA expression of glomruli. Overexpression of miR-148a-3p accelerated cell proliferation and PCNA expression, while a miR-148a-3p inhibitor inhibited cell proliferation via the Akt/cyclin D1 pathway. Furthermore, miR-148a-3p overexpression reduced the phosphatase and tensin homology deleted on chromosome ten (PTEN) expression level, while miR-148a-3p silencing increased its expression in high-mobility group box 1 (HMGB1)-induced mouse mesangial cells (MMCs). Luciferase assays demonstrated that miR-148a-3p could directly bind to the PTEN 3'-UTR. PTEN overexpression inhibited MMC proliferation considerably, resembling the results observed during miR-148a-3p inhibition. Reducing miR-148a-3p expression upregulated PTEN in the glomeruli and improved renal function in LN mice. Thus miR-148a-3p may promote proliferation and contribute to LN progression by targeting PTEN.

Human umbilical cord blood mononuclear cell transplantation for treatment of radioactive premature ovarian failure in nude mice / 中国组织工程研究

BACKGROUND:Stem cel transplantation, in recent years, has become a preferred treatment for premature ovarian failure. Umbilical cord blood mononuclear cel s containing a large number of mesenchymal stem cel s, immature stem/progenitor cel s, and endothelial progenitor cel s can be used as an important source of stem cel transplantation. OBJECTIVE:To study the therapeutic efficacy of human umbilical cord blood mononuclear cel transplantation on radioactive premature ovarian failure in nude mice. METHODS:120 female BALB/C nude mice were randomly divided into four groups:blank control group without any intervention;model group, intravenous transplantation group, and in situ transplantation group exposed to 60Coγrays, 0.5 Gry per day, for 30 days. After 30 days, premature ovarian failure models were made in the latter three groups. Then, nude mice in the latter three groups were given bilateral ovary injection of 10 μL DMEM, tail vein injection of 10 μL human umbilical cord blood mononuclear cel s (1×1013/L), and bilateral ovary injection of 10 μL human umbilical cord blood mononuclear cel s (1×1013/L), respectively. Thirty days after cel transplantation, serum levels of estradiol, fol icle hormone, luteinizing hormone, inhibin B and vascular endothelial growth factor were detected, cel apoptosis in the ovary tissue and cel survival were observed pathological y. RESULTS AND CONCLUSION:After modeling, the serum levels of estradiol, inhibin B and vascular endothelial growth factor were significantly reduced (P<0.01), while fol icle hormone and luteinizing hormone levels increased (P<0.01). After transplantation, these indexes were al improved in the in situ transplantation group (P<0.01), and reduced fol icle hormone and luteinizing hormone levels were visible in the intravenous transplantation group (P<0.05, P<0.01). Compared with the model group, in situ transplantation and intravenous injection of human umbilical cord blood mononuclear cel s could effectively reduce cel apoptosis in the ovary tissue (P<0.05), and transplanted cel s were able to survive in the ovary of nude mice. Al these findings show human umbilical cord blood mononuclear cel transplantation do have curative effects on premature ovarian failure in nude mice through the inhibition of apoptosis and the regulation of hormone secretion.

Effect of team-based tutorial system to nursing student in the order cultivation pattern / 中国实用护理杂志

Objective To explore the effect of team-based tutorial system to nursing student in the order cultivation Pattern.Methods This study used the convenience sampling method.109 students were choosed from orientation training classes that 2012 and 2013 grade as the research subjects.The 59 students from 2013 grade as the test group,implement team-based tutorial system to them in the fourth semester.The 50 students from 2012 grade that had been implemented general management as the control group,then compare the fourth semester final grade,classes atmosphere,the evaluation of patients and clinical teachers over the same period.Results The test group and control group students' scores of their fourth semester final grade,classes atmosphere,the evaluation of clinical teachers and patients were (92.39±2.39),(3.45±0.64),(95.33±2.01),(94.75±2.38) points and (90.91±2.62),(3.14±0.63),(91.00±1.82),(90.63±2.34) points.There was difference between them,and the difference was statistically significant (t=-7.82 ～ 3.06,P ＜ 0.05).Conclusions The implementation of team-based tutorial system to nursing student in the order cultivation pattern can improve students' academic performance,improve their class atmosphere and their communication skills so that patients get good evaluation of patients and clinical teachers.

Effect of angiotensinⅡon expression of Notch pathway and Nephrin in podocyte / 中国药理学通报

Aim To investigate the expression of Notch pathway and Nephrin in angiotensin Ⅱ ( AngⅡ)-stimulated mice podocyte. Methods Mice podo-cyte was stimulated by AngⅡ, and then was treated with valsartan. The levels of Notch1, Notch intracellu-lar domain 1 ( NICD1 ) , Hes1 and Nephrin were deter-mined by immunofluorescence, Western blot and Real-time PCR. Results AngⅡincreased Notch1, NICD1 and Hes1 expression, and decreased Nephrin expres-sion in a time-dependent manner ( P<0. 01 ) . Valsar-tan inhibited AngⅡ-induced activation of Notch path-way and enhanced Nephrin level ( P <0. 01 ) . Con-clusion AngⅡdecreases Nephrin expression in podo-cyte by activating Notch pathway.

Reliability and validity of Chinese version of the Oncology Patients' Perceptions of the Quality of Nursing Care Scale / 中国实用护理杂志

Objective To translate the English version of the Oncology Patients' Perceptions of the Quality of Nursing Care Scale (OPPQNCS) into Chinese and to test the reliability and validity of the Chinese version of OPPQNCS in oncology patients.Methods The English version of OPPQNCS was translated by Brislin translation mode.Totally 320 oncology patients were recruited and were investigated by the Chinese version of OPPQNCS.Results The internal consistency coefficient of the Chinese version of OPPQNCS was more than 0.70,ranged from 0.804 to 0.964;the test-retest was 0.826.The content validity index(CVI) was 0.845-1.000,the average CVI was 0.925.Factor analysis got four factors,which explained 78.548％ of the total variance.And every objective factor loading were greater than 0.4.Conclusions The Chinese version of OPPQNCS has been proved to be reliable and valid.It can be used as a valid tool for the oncology patients to measure their perceptions of the quality of nursing care they got.

Reliability and validity of Chinese version of the Medication Adherence Self-efficacy Scale / 中国实用护理杂志

Objective To translate the English version of the Medication Adherence Self-efficacy Scale (MASES) into Chinese and to test the reliability and validity of the Chinese version of MASES in patients with hypertension.Methods Totally 285 patients with hypertension were recruited and were investigated by the Chinese version of MASES.The results underwent analysis for reliability and validity.Results The retest reliability of MASES was 0.843.The Cronbach α of the Chinese version of MASES was 0.876.The Cronbach α of the four dimensions ranged from 0.794 to 0.905.The average content vality index (CVI) of the scale was 0.946.Factor analysis got four factors,which explained 68.683％ of the total variance.The factor loading of each item on its common factor was ＞0.4.Conclusions The Chinese version of MASES has been proved to be reliable and valid.It can be used as a valid tool for the measurement of the patient compliance in patients with hypertension.

Reliability and validity of Chinese version of the Client-Centred Care Questionnaire / 中国实用护理杂志

Objective To translate the English version of the Client-Centred Care Questionnaire (CCCQ) into Chinese and to test the reliability and validity of the Chinese version of CCCQ.Methods The English version of CCCQ was translated into Chinese by the method of double translation-translation.Totally 320 chronic patients were recruited and they were investigated by the Chinese version of CCCQ.Results The Cronbach coefficient of the Chinese version of CCCQ was 0.925,P＜0.01.The retest reliability was 0.807,P＜0.01.The split-half reliability with r=0.883,P＜0.01.The content validity index (CVI) was 0.956,and every purpose CVI values were above 0.8.Factor analysis got one factor,which explained 52.549％ of the total variance,and each objective factor loading was above 0.4.Conclusions The Chinese version of CCCQ has been proved to be reliable and valid.It can be used as a valid tool for the chronic patients to measure their perceptions of the quality of nursing care.

Influence of flow Yoga on balance ability and fear of falling of community patients with stroke / 中国实用护理杂志

Objective To explore the effect of flow yoga on balance ability and fear of falling of community patients with stroke.Methods Divided 92 community patients with stroke into the intervention group (46 cases) and the control group (46 cases) randomly,routine community nursing cares were used in the control group,while the flow yoga were used in the intervention group in addition.The berg balance scale,single direct question of fear of falling and modified falls efficacy scale were used to evaluate balance ability and fear of falling after the intervention between the two groups.Results The patients' balance ability was (48.28±10.64) in the intervention group,which was significant higher than that of in the control group (32.04±11.42),t=6.316,P＜0.05.The fall efficacy in the intervention group was (132.03±27.38),which was significant higher than that of in the control group (108.74±25.68),t=8.256,P＜0.05.The rate of fear falling in the intervention group was 26.09％(12/46),which was significant lower than that of in the control group (32.16T％,15/46),x2=6.545,P＜0.05.Conclusion Flow yoga can improve stroke patients' balance ability and reduce fear of falling.

Effect of shHMGB1 knockdown on renal function improvement and cell proliferation of glomeruli in lupus nephritis mice / 中华肾脏病杂志

Objective To investigate the effect of high mobility group box chromosomal protein 1 (HMGB1) knockdown on improving renal function and decreasing cell proliferation of glomeruli in lupus nephritis (LN) MRL/Faslpr mice.Methods Twenty-four MRL/Faslpr mice were randomly divided into 3 groups:LN model group,shHMGB1 group and empty plasmid group.Besides,eight MRL/MpJ mice,age and mass matched to the MRL/Faslpr mice,were chosen as normal control group (shNC group).Electroporation technology was used for in vivo transfection in treatment group.shHMGB1 group and empty plasmid group were transfected by electroporation technology for shHMGB1 plasmids and empty plasmid,LN model group and normal control group were transfected only with saline.Automatic biochemical analyzer was used to detect serum urea nitrogen (BUN) and creatinine (Scr) levels and 24 h urinary protein (UP) was tested.HE staining was used to detect the pathological change of renal tissues; real-time PCR,immunofluorence staining and Western blotting were used to detect the mRNA and protein expression of HMGB1 and PCNA.Results (1) The HMGB1 mRNA and protein expression in LN group increased compared with those in control group,HMGB1 mRNA and protein expression in shHMGB1 group reduced compared with those in LN model group (all P ＜ 0.05).(2) 24 h UP of MRL/Faslpr mice in shHMGB1 group significantly reduced compared with those in LN group (P ＜ 0.05).(3) Immunofluorence and Western blotting showed that positive signal of proliferating cell nuclear antigen (PCNA) was mainly located in nuclei,PCNA mRNA and protein in glomeruli of LN model group increased compared with those of control mice (P ＜ 0.05).Interestingly,PCNA expression in glomeruli of shHMGB1 group remarkably reduced (P ＜ 0.05).Conclusions shHMGB1 significantly improves renal function and decreases cell proliferation of glomeruli in LN MRL/Faslpr mice.

Role of SOCS3 in tubulointerstitial injury of mice with diabetes / 临床与实验病理学杂志

Purpose To investigate the role of SOCS3 on diabetic renal injury. Methods Male CD-1 mice were randomly divided into four groups:control group, diabetic group, empty plasmid vector transfection group and SOCS3 plasmid transfection group. The diabet-ic mice were induced by intraperitoneal injection of STZ at a dose of 150 mg/kg body weight. The mice of transfection group were re-ceived an injection of SOCS3 plasmid or empty vector at every 7 days thereafter. Specimens were collected at 12 week after STZ injec-tion. The morphological changes of tubular epithelial cells were observed by transmission electron microscope. RT-PCR and immuno-histochemistry were used to determine the mRNA and protein expression of CK18 and α-SMA. Western blotting analysis was used to determine the protein expression of SOCS3, p-STAT3, CK18 and α-SMA. Results SOCS3 overexpression in kidney down-regulated the levels of p-STAT3 andα-SMA but up-regulated the expression of CK18. Conclusion Overexpression of SOCS3 can ameliorate the tubular epithelial-mesenchymal transdifferentiation of diabetic mice via inhibiting the phosphorylation of STAT3.

Effect of NF-κB signal pathway in murine lupus nephritis / 中国免疫学杂志

Objective:To investigate the expression and mechanism of NF-κB signal pathway in murine lupus nephritis.Methods:The BXSB mice as well as C57BL/6 of 16 weeks were used.Transmission electron microscope and PAS were used to detect the pathological change of renal tissue.RT-PCR and ELISA were used to detect the expression of HMGB1 mRNA and protein.The expression of HMGB1,p- NF-κB,RAGE,IκB and PCNA protein was detected by immunohistochemical stain,FCM and Western blot.Results:The level of BUN in serum and Micro-albumin in urine of BXSB mice was higher than that in C57BL/6 mice.The expression of HMGB1 mRNA and HMGB1 protein level in peripheral blood increased significantly in BXSB group.Compared with those in control group,electron microscopy and PAS revealed the thickness of glomerular basement membrane(GBM),fusion of foot processes partly of epithelial dell and subepithelial electron-dense deposits in the renal tissue of BXSBA mice.Compared with that of control group,expression of PCNA was higher in glomeruli of BXSB mouse.HMGB1 protein over-expression localized in cytoplasm and extracellular milieu,especially in proliferative glomeruli in BXSB group,while the HMGB1 protein primarily confined to the nuclear of tubule in control group.In BXSB group,the expression of p-NF-κB and RAGE increased,while the expression of IκB decreased.There were positive correlation between the expression of HMGB1,RAGE and p-NF-κB protein (r=0.833,0.621,0.848,P＜0.01),while the expression of p-NF-κB protein negatively correlated with that of IκB.Conclusion:HMGB1 could activate NF-κB through combining with its receptor-RAGE,induce the form of proliferative glomerulonephritis by promoting the proliferation of inherent cell of glomeruli,which may play an important role in the murine lupus nephritis.

The time-dependent effect of insulin on the expression of SREBP-1,FAS and lipid droplet formation in HKC cells / 中国药理学通报

Aim To investigate the time-dependent effect of insulin on the expression of SREBP-1(sterol regulatory element binding protein-1),FAS(fat acid synthase)and lipid droplet formation in HKC cells(human renal proximal tubular epithelial cells line).MethodsHKC cells were respectively treated with 100 nmol·L~(-1) insulin for 0,2,4,6,12 h and 24 h.The analysis of SREBP-1 and FAS mRNA was performed by RT-PCR and the expression of SREBP-1 protein was detected by Western blot and immunocytochemistry.Furthermore,Oil Red O staining was used to determine cellular lipid droplet formation.ResultsCompared with HKC cells of 0 h group,there was no difference of SREBP-1 and FAS mRNA in HKC cells of 2 h group.However,the expression of SREBP-1 and FAS mRNA was significantly increased in HKC cells of 4,6 h and 12 h group.Further,the most expression of SREBP-1 and FAS mRNA was at 6 h group and was respectively increased by 3.578 and 4.272 times compared with 0 h group.The results of Western blot showed that the precursor and mature segments of SREBP-1 protein in 4,6 h and 12 h group HKC cells were increased and those of 6 h group HKC cells were the highest and about 4.106 and 5.167 times than those of 0 h group HKC cells.Immunocytochemistry presented the result that SREBP-1 protein was located in the plasma and the expression of 4,6 h and 12 h group HKC cells was significantly higher than that of 0,2 h and 24 h group HKC cells.The result of Oil Red O staining showed that lipid droplet markedly deposited in 6 h group HKC cells,contrarily,no lipid droplet was found in HKC cells of other groups.ConclusionAbove results suggested that insulin up-regulated SREBP-1 and FAS in time-dependent manner that led to cellular lipid droplet deposit,which may play an important role in the pathogenesis of renal lipid accumulation in metabolism syndrome.

Fisher discriminant analysis of ultrasonography index in diagnosing characters of ovarian neoplasms / 中国医学影像技术

Objective To construct Fisher discrminant functions with index of ultrasonography. Methods A total of 48 non-neoplastic ovarian cysts, 137 benign and 120 malignant ovarian tumors were enrolled in this study. Taking ultrasonographic parameters and Doppler blood flow signals as differential diagnosis variable, a diagnosis model was developed using stepwise discriminant analysis. Then a projection and territorial map were drew and the diagnostic ability of the model was verified with substitution method and jackknife. Results ①Univariate analysis indicated that ovarian cysts volume, end-diastolic blood flow velocity (V_(ED)), mean blood flow velocity (V_m), resistance index (RI), pulse index (PI), physical property, echo, shape, boundary, ascites and blood flow signal have statistical difference among the three kinds of ovarian cysts. ②Stepwise discriminant analysis showed that volume, resistance index, physical property, shape and boundary are the independent prognostic variables. The two Fisher discriminant functions were as following: Function 1=0.002volume-4.793 RI+0.468physical property+0.862shape+0.901boundary-4.076, Function 2=0.005volume-1.480 RI+0.851physical property-0.291shape+0.443boundary+0.524. ③The projective positions of three kinds of ovarian cysts at 2D coordinates were clear. ④The sensibility and specificity of mode for diagnosis non-neoplastic ovarian cysts, benign and malignant ovarian tumors was 91.67%, 88.32% and 93.33% with substitution method, and was 91.67%, 86.13% and 93.33% with jackknife method. Conclusion Cysts volume, RI, physical property, shape and boundary are the significant differential prognostic variables. Fisher discriminant analysis can provide a reliable prognostic model for ovarian cysts.