Influence of As_2O_3 combined with ginsenosides Rg3 on inhibition of lung cancer NCI-H1299 cells and on subsistence of nude mice bearing hepatoma

Objective:To study the effect of arsenic trioxide（As2O3）combined with ginsenosides Rg3 on inhibiting the NCI-H1299 lung cancer cells and subsistence in nude mice bearing hepatoma.Methods:MTT method was used to measure the inhibition effect of（As2O3）combined Rg3 on NC1-H1299 cells,and the proliferation inhibiting effect was observed via establishing the transplanted tumor model in vitro.A total of 40 tumor-bearing nude mice were randomly divided into normal saline group,（As2O3）,Rg3 and As2O3+Rg3 group.Transplantation tumor model of lung cancer in nude mice was constructed,followed by injection of certain concentrations of normal saline,As2O3,ginseng saponin Rg3 and As2O3+Rg3 every day.The survival duration and the tumors size of the mice were recorded and the Kaplan-Meier curve was made;microscopic observation of apoptosis of tumor cells in vivo was done using TUNEL staining.Results:After 72 h of injection.inhibition rate of tumor cell in normal saline group,As2O3 group.Rg3 group and As2O3+Rg3 group was（5.66±0.31）%,（65.58±4.75）%,（44.69±3.32）%and（82.67±5.43）%,respectively.Inhibition rate of tumor cell in As2O3 group.Rg3 groap and As2O3+Rg3 group was significantly higher than that of normal saline group（P【0.01）;inhibition rate of tumor cells of As2O3+Rg3 group was significantly higher than that of the two groups given As2O3 or Rg3 alone（P【0.01）.The tumor volume of As2O3 group,Rg3 group and As2O3+Rg3 group shrank to（65.38±3.25）%,（77.68±3.43）%and（42.65±3.55）%of the original,tumor volume of saline group was 1.21 times of the original size（P【0.01）;Median survival of saline group,Rg3 group,As2O3 group were significantly shorter than that of As2O3+Rg3 group（P【0.01）;co-ordinated intervention ability of As2O3+Rg3 on NCI-H1299 cell was significantly higher than that of As2O3 or Rg3,separately.Conclusions:As2O3 combined with Rg3 can significantly inhibit prolifaration of NCI-H1299 cells in lung cancer,prolong survival fo tumor-bearing nude mice,and promote tumor cell apoptosis,and have significant effect on lung cancer treatment.

Separation of Eu^3＋ Using a Novel Dispersion Combined Liquid Membrane with P507 in Kerosene as the Carrier

The separation of Eu^3 ＋is studied with a dispersion combined liquid membrane（DCLM）,in which polyvinylidene fluoride membrane（PVDF）is used as the liquid membrane support,dispersion solution containing HCl solution as the stripping solution,and 2-ethyl hexyl phosphonic acid-mono-2-ethyl hexyl ester（P507）dissolved in kerosene as the membrane solution.The effects of pH value,initial concentration of Eu3 ＋and different ionic strength in the feed phase,volume ratio of membrane solution to stripping solution,concentration of HCl solution, concentration of carrier,different stripping agents in the dispersion phase on the separation are investigated.The optimum condition for separation of Eu3 ＋is that concentration of HCl solution is 4.0 mol·L 1,concentration of carrier is 0.16 mol·L 1,and volume ratio of membrane solution to stripping solution is 30︰30 in the dispersion phase, and pH value is 4.2 in the feed phase.The ionic strength has no significant effect on separation of Eu3 ＋.Under the optimum condition,when the initial concentration of Eu3 ＋is 0.8×10 4mol·L 1,the separation percentage of Eu 3＋is 95.3%during the separation time of 130 min.The kinetic equation is developed in terms of the law of mass diffusion and the theory of interface chemistry.The diffusion coefficient of Eu3 ＋in the membrane and the thickness of diffusion layer between feed phase and membrane phase are obtained and their values are 1.48×10 7m 2·s 1and 36.6μm,respectively.The results obtained are in good agreement with literature data.

Syngas production by combined carbon dioxide reforming and partial oxidation of methane over Ni/α-Al_2O_3 catalysts

Ni/α-Al2O3 catalysts were found to be active in the temperature range 600 ～ 900℃ for both CO2 reforming and partial oxidation of methane.The effects of Ni loading,reaction temperature and feed gas ratio for the combination of CO2 reforming and partial oxidation of CH4 over Ni/α-Al2O3 were investigated.Catalysts of xwt%Ni/α-Al2O3（x=2.5,5,8 and 12） were prepared by wet impregnating the calcined support with a solution of nickel nitrate.XRD patterns and activity tests have verified that the 5wt%Ni/α-Al2O3 was the most active catalyst,as compared with the other prepared catalyst samples.An increase of the Ni loading to more than 5wt% led to a reduction in the Ni dispersion.In addition,by combining the endothermic carbon dioxide reforming reaction with the exothermic partial oxidation reaction,the loss of catalyst activity with time on stream was reduced with the amount of oxygen added to the feed.

IN-1 combined with neurotrophin-3 for axonal growth-related gene expression after spinal cord injury

A spinal cord hemisection injury model was established in rats. Treatment with IN-1 and/or neurotrophin-3 was found to regulate the expression of growth-associated protein 43, nerve growth factor, and basic fibroblast growth factor genes in the injured spinal cord tissues; transcript levels were first increased and then decreased. Expression levels reached a peak at days 7 （growth-associated protein 43） or 14 （nerve growth factor and basic fibroblast growth factor） following spinal cord injury. Combined treatment with neurotrophin-3 and IN-1 achieved the most apparent effect on the expression and recovery of motor function. These findings confirm that combined therapy with neurotrophin-3 and IN-1 can increase expression of growth factors in the injured spinal cord tissues and promote the axonal reaeneration.

Novel compound heterozygous variants in the LHX3 gene caused combined pituitary hormone deficiency: A case report

BACKGROUND Combined pituitary hormone deficiency 3(CPHD3;OMIM:221750)is caused by mutations within the LHX3 gene(OMIM:600577),which located on the subtelomeric region of chromosome 9 at band 9q34.3,has seven coding exons and six introns.LIM homeobox(LHX)3 protein is the key regulator of pituitary development in fetal life.CASE SUMMARY We have diagnosed and treate an 11-year-old boy with combined pituitary hormone deficiency(CPHD).The main clinical manifestations were pituitary hormone deficiency,hydrocele of the tunica vaginalis,pituitary dwarfism,gonadal dysplasia,micropenis,clonic convulsion,and mild facial dysmorphic features.We collected peripheral blood from the patient,the patient's older brother,as well as their parents,and sequenced them by using high-throughput whole-exosome sequencing,which was verified by Sanger sequencing.The results showed that there were two compound heterozygous variants of c.613G>C(p.V205L)and c.220T>C(p.C74R)in the LHX3 gene.c.613G>C(p.V205L)was inherited from his mother and c.220T>C(p.C74R)from his father.His brother also has both variants and symptoms.CONCLUSION This study reported ununreported genetic mutations of LHX3,and recorded the treatment process of the patients,providing data for the diagnosis and treatment of CPHD.

Therapeutic Effect of Common Goldenrop Decoction Combined With Ramuli Cinnamomi Decoction in the Treatment of Patients with Insomnia during the Period of the Day from 11 PM to 3 AM

Objective:To observe the clinical efficacy of common goldenrop decoction combined with ramuli cinnamomi decoction in the treatment of patients with insomnia during the period of the day from 11 PM to 3 AM.Methods:80 patients with insomnia during the period of the day from 11 PM to 3 AM were randomly divided into control group and intervention group.The control group was treated with 1 mg of estazolam tablets at 9 PM every night;while the intervention group was given common goldenrop decoction combined with ramuli cinnamomi decoction based on the estazolam tablets.After 2 weeks of treatment and after 2 weeks of withdrawal,the improvement in sleep was observed.Results:After 2 weeks of treatment,the efficacy of the intervention group(97.5%)was significantly higher than that of the control group(75.0%).The difference was statistically significant.After 2 weeks of withdrawal,the intervention group still had an effective rate of 87.5%,which was significantly higher than that of the control group(55.0%).Conclusion:common goldenrop decoction combined with ramuli cinnamomi decoction can improve the short-term and long-term sleep quality of patients with insomnia during the period of the day from 11 PM to 3 AM.

Chemospecific and Regioselective Ethereal Methyl-Oxygen Bond Cleavage Behavior of Aroylated Dimethoxynaphthalenes by Combined Action of AlCl₃and Aroyl Group

AlCl3-mediated cleavage of ethereal methyl–oxygen bond in aroylated 2,7-dimethoxynaphthalene compounds proceeds chemospecifically and regioselectively. The ethereal bond at the β(2)-position of 1-monoaroylated 2,7-dimethoxynaphthalene is cleaved readily and predominantly against the β(7)-position, whereas scission of β-ethereal bonds of 1,8-diaroylated 2,7-dimethoxynaphthalene hardly undergoes like the non-aroylated mother frame compound of 2,7-dimethoxynaphthalene.

不同3D-BER反应器去除地下水中NO_3^--N的研究

采用平板式、中心式2种构型的三维生物膜电极反应器(3D-BER)对模拟的污染地下水中的NO_3^--N进行处理,研究了水力停留时间(HRT)、电流、进水NO_3^--N浓度和pH这4种影响因素对2种反应器脱氮效果的影响。结果表明:平板式、中心式3D-BER反应器适宜的HRT均为12 h,最佳的电流范围均为40~50 mA,对应的最大NO_3^--N去除率分别为82.67%、71.89%,理想的进水NO_3^--N分别为35~55、20~35 mg/L,平板式3D-BER反应器对进水NO_3^--N负荷具有更高的承受能力,中心式3D-BER反应器由于具有较好的阴极和阳极产物混合条件,对进水pH具有更强的缓冲能力。

NLRP3炎症小体在大鼠单侧输尿管梗阻引起肾间质纤维化中的作用及其机制

目的:探讨核苷酸结合寡聚化结构域样受体蛋白3(NLRP3)炎性小体在大鼠单侧输尿管梗阻(UUO)模型肾间质纤维化中的作用,并阐明其可能的作用机制。方法:健康雄性Wistar大鼠30只随机分为假手术组(n=6)和UUO组(n=24),假手术组大鼠仅分离输尿管不结扎,UUO组分别于术后3、7和14 d处死大鼠,并按照处理时间分为UUO 3 d组(n=8)、UUO 7 d组(n=8)和UUO 14 d组(n=8)。HE染色和Masson染色观察各组大鼠肾组织病理形态表现,试剂盒检测各组大鼠肾组织中丙二醛(MDA)水平、超氧化物歧化酶(SOD)活性和羟脯氨酸(HYP)水平,免疫组织化学法检测各组大鼠肾组织中α-平滑肌肌动蛋白(α-SMA)和转化生长因子β1(TGF-β1)蛋白表达水平,Western blotting法检测各组大鼠肾组织中NLRP3蛋白表达水平。结果:HE染色,UUO组大鼠出现明显肾小管扩张,肾间质水肿和增宽,可见较多炎症细胞浸润,部分肾小管腔内可见脱落的上皮细胞。与假手术组比较,UUO 3 d组、UUO 7 d组和UUO 14 d组大鼠HE染色肾间质纤维化评分均明显升高(P<0.05);与UUO 3 d组和UUO 7 d组比较,UUO 14 d组大鼠HE染色肾间质纤维化评分明显升高(P<0.05)。Masson染色,UUO组大鼠肾间质炎症细胞浸润明显,可见明显纤维组织增生;随UUO作用时间增加,大鼠部分肾小管消失,肾间质明显增宽,胶原沉积逐渐增多,皮髓交界处胶原沉积程度更加明显。与假手术组比较,UUO 3 d组、UUO 7 d组和UUO 14 d组大鼠Masson染色肾间质纤维化评分均明显升高(P<0.05);与UUO 3 d组和UUO 7 d组比较,UUO 14 d组大鼠Masson染色肾间质纤维化评分明显升高(P<0.05)。与假手术组比较,UUO 3 d组、UUO 7 d组和UUO 14 d组大鼠梗阻侧肾组织中MDA水平均明显升高(P<0.05),SOD活性明显降低(P<0.05)。与假手术组比较,UUO 3 d组、UUO 7 d组和UUO 14 d组大鼠梗阻侧肾组织中HYP水平均明显升高(P<0.05);与UUO 3 d组比较,UUO 14 d组大鼠梗阻侧肾组织中HYP水平明显升高(P<0.05)。免疫组织化学法,与假手术组比较,UUO 3 d组、UUO 7 d组和UUO 14 d组大鼠肾组织中α-SMA蛋白表达水平明显升高(P<0.05);与UUO 3 d组和UUO 7 d组比较,UUO 14 d组大鼠肾组织中α-SMA蛋白表达水平均明显升高(P<0.05);与假手术组比较,UUO 3 d组、UUO 7 d组和UUO 14 d组大鼠肾小管上皮细胞和肾小管间质组织中TGF-β1蛋白表达水平明显升高(P<0.05);与UUO 3 d组比较,UUO 14 d组大鼠肾小管上皮细胞和肾小管间质组织中TGF-β1蛋白表达水平明显升高(P<0.05)。Western blotting法,与假手术组比较,UUO 7 d组和UUO 14 d组大鼠肾组织中NLRP3蛋白表达水平均明显升高(P<0.05)。结论:NLRP3炎症小体在UUO大鼠肾纤维化过程中发挥重要作用,其作用机制与氧化应激增加和TGF-β1蛋白表达水平升高有关。

常规式与复合式3D-BER脱氮性能比较

采用常规式三维生物膜电极反应器(3D-BER)和复合式三维生物膜电极反应器(3D-BER)处理含硝酸氮的微污染地下水,并比较水力停留时间(HRT)、电流强度、进水硝酸氮浓度、进水pH四个因素下,2种反应器对硝酸氮的处理效果.研究表明:2种反应器最佳HRT选择12 h,最佳电流强度选择40 mA,进水硝酸氮浓度为30 mg/L,常规式3D-BER进水pH为8时,出水硝酸氮浓度是2.90 mg/L,此时去除率达到最大值90.33%.而复合式3D-BER的最佳pH为7,出水硝酸氮浓度是2.96 mg/L,此时去除率为90.15%.

Fibrosis assessment using Fibro Meter combined to first generation tests in hepatitis C

AIMTo evaluate the performance of FibroMeterVirus3G combined to the first generation tests aspartate aminotransferase-to-platelet ratio index (APRI) or Forns index to assess significant fibrosis in chronic hepatitis C (CHC). METHODSFirst generation tests APRI or Forns were initially applied in a derivation population from Rio de Janeiro in Brazil considering cut-offs previously reported in the literature to evaluate significant fibrosis. FibroMeterVirus3G was sequentially applied to unclassified cases from APRI or Forns. Accuracy of non-invasive combination of tests, APRI plus FibroMeterVirus3G and Forns plus FibroMeterVirus3G was evaluated in the Brazilian derivation population. APRI plus FibroMeterVirus3G combination was validated in a population of CHC patients from Angers in France. All patients were submitted to liver biopsy staged according to METAVIR score by experienced hepatopathologists. Significant fibrosis was considered as METAVIR F ≥ 2. The fibrosis stage classification was used as the reference for accuracy evaluation of non-invasive combination of tests. Blood samples for the calculation of serum tests were collected on the same day of biopsy procedure or within a maximum 3 mo interval and stored at -70 °C. RESULTSSeven hundred and sixty CHC patients were included (222 in the derivation population and 538 in the validation group). In the derivation population, the FibroMeterVirus3G AUROC was similar to APRI AUROC (0.855 vs 0.815, P = 0.06) but higher than Forns AUROC (0.769, P Virus3G cut-off to discriminate significant fibrosis was 0.61 (80% diagnostic accuracy; 75% in the validation population, P = 0.134). The sequential combination of APRI or Forns with FibroMeterVirus3G in derivation population presented similar performance compared to FibroMeterVirus3G used alone (79% vs 78% vs 80%, respectively, P = 0.791). Unclassified cases of significant fibrosis after applying APRI and Forns corresponded to 49% and 54%, respectively, of the total sample. However, the combination of APRI or Forns with FibroMeterVirus3G allowed 73% and 77%, respectively, of these unclassified cases to be correctly evaluated. Moreover, this combination resulted in a reduction of FibroMeterVirus3G requirement in approximately 50% of the entire sample. The stepwise combination of APRI and FibroMeterVirus3G applied to the validation population correctly identified 74% of patients with severe fibrosis (F ≥ 3). CONCLUSIONThe stepwise combination of APRI or Forns with FibroMeterVirus3G may represent an accurate lower cost alternative when evaluating significant fibrosis, with no need for liver biopsy.

A combined denoising method of empirical mode decomposition and singular spectrum analysis applied to Jason altimeter waveforms: A case of the Caspian Sea

During the satellite pulse propagation and reception, the altimeter waveform is inevitably affected by noise. To reduce the noise level in Jason altimeter waveforms, we used singular spectrum analysis(SSA),empirical mode decomposition(EMD), and the combination of SSA and EMD to obtain the denoised waveforms. The advantages of the combined method were verified and the accuracy of the mean sea surface height(MSSH) model was improved. Comparing the denoising effect of the three methods, the results show that the signal-to-noise ratio(SNR), correlation coefficient and root-mean-square error are effectively improved by the combination of SSA and EMD. The sea surface heights(SSHs) were remeasured with a 50% threshold retracker of denoised waveforms, and the MSSH model of the Caspian Sea with a grid of 1’× 1’was established from the retracked SSHs of Jason-1/2/3. Taking the mean value of the four models as a control, it is found that the model calculated by the combined denoising method has the highest accuracy. This indicates that using the combined denoising method to reduce the noise level is beneficial to improve the accuracy of the MSSH model.

Representation of the ENSO Combination Mode and its Asymmetric SST Response in Different Resolutions of HadGEM3

Previous studies have revealed a combination mode （C-mode） occurring in the Indo-Pacific region, arising from nonlinear interactions between ENSO and the western Pacific warm pool annual cycle. This paper evaluates the simulation of this C-mode and its asymmetric SST response in HadGEM3 and its resolution sensitivity using three sets of simulations at horizontal resolutions of N96, N216 and N512. The results show that HadGEM3 can capture well the spatial pattern of the C-mode associated surface wind anomalies, as well as the asymmetric response of SST in the tropical Pacific, but it strongly overestimates the explained variability of the C-mode compared to the ENSO mode. The model with the three resolutions is able to reproduce the distinct spectral peaks of the C-mode at the near annual combination frequencies, but the performance in simulating the longer periods is not satisfactory, presumably due to the unrealistic simulation of the ENSO mode. Increasing the horizontal resolution can improve the consistency between atmospheric and oceanic representations of the C-mode, but not necessarily enhance the accuracy of C-mode simulation compared with observation.

正五聚蛋白-3在脓毒症中的研究进展

脓毒症致病机制复杂,具有高发病率和高病死率的特点,探索寻找可以对脓毒症进行更准确诊断和预后预测的生物标志物意义重大。正五聚蛋白-3(pentraxin-3,PTX-3)是首个被鉴定的长链五聚蛋白,作为先天免疫的关键介质,在全身炎症反应活动中发挥着重要调控作用。近年来多项研究表明,PTX-3水平在脓毒症中急剧升高,与病情严重程度和临床转归密切相关。PTX-3在脓毒症的临床诊断和预后评估方面表现出优良的价值,与其他生物标志物结合,可以提高诊断效率,优化对脓毒症患者的危险分层。本文就PTX-3的生物学功能及其在脓毒症中的系列研究进行综述,旨在阐明PTX-3对脓毒症诊断和预后预测的重要价值,以期为脓毒症的临床诊疗提供新思路。

Effects of Combination of 1,25(OH)_(2)D_(3) and TLR-4 Inhibitor on the Damage to HaCaT Cells Caused by UVB Irradiation

Objective Vitamin D and Toll-like receptor-4(TLR-4)inhibition are involved in the protection of keratinocytes.The effects of combination of 1,25(OH)_(2)D_(3) and TLR-4 inhibitor on the protection of keratinocytes against ultraviolet radiation B(UVB)irradiation remain unclear.This study was undertaken to explore the effects of combination of 1,25(OH)_(2)D_(3) and TAK-242(TLR-4 inhibitor)on the damage to HaCaT cells caused by UVB irradiation.Methods In vitro,HaCaT cells were treated with 1,25(OH)_(2)D_(3) or/and TAK-242 prior to UVB irradiation at the intensity of 20 mJ/cm^(2),then the production of reactive oxygen species(ROS),cell migration,apoptosis of cells,and the expression of oxidative stress,endoplasmic reticulum stress,and apoptosis related proteins were determined.Results Compared with the HaCaT cells treated with 1,25(OH)_(2)D_(3) or TAK-242,the cells treated with both 1,25(OH)_(2)D_(3) and TAK-242 showed,1)significantly lower production of ROS(P<0.05);2)significantly less apoptosis of HaCaT cells(P<0.05);3)significantly lower expression of NF-κB,Caspase-8,Cyto-C,Caspase-3(P<0.05).Conclusion The combination of 1,25(OH)_(2)D_(3) and TAK-242 could produce a better protection for HaCaT cells via inhibiting the oxidative stress,endoplasmic reticulum stress and apoptosis than 1,25(OH)_(2)D_(3) or TAK-242 alone.

血清14-3-3β蛋白联合呼出气一氧化氮及常规通气肺功能参数对儿童支气管哮喘的诊断效能

目的探讨血清14-3-3β蛋白联合呼出气一氧化氮(fractional exhaled nitric oxide,FeNO)及常规通气肺功能参数对儿童支气管哮喘(简称“哮喘”)的诊断效能。方法前瞻性纳入136例初次诊断为哮喘且处于急性发作期的儿童为哮喘组,选择同期85例健康体检儿童为健康对照组,比较两组血清14-3-3β蛋白浓度的差异,分析血清14-3-3β蛋白与临床指标的相关性,评估14-3-3β蛋白联合FeNO及常规通气肺功能参数对儿童哮喘的诊断效能。结果哮喘组血清14-3-3β蛋白浓度高于健康对照组(P<0.001)。血清14-3-3β蛋白与中性粒细胞百分比、血清总免疫球蛋白E呈正相关,与常规通气肺功能参数呈负相关(P<0.05)。联合指标交叉验证显示14-3-3β蛋白+FeNO+用力呼出75%肺活量的呼气流量占预测值百分比预测哮喘的曲线下面积为0.948,灵敏度和特异度分别为88.9%和93.7%,具有较好的诊断效能(P<0.001),模型的外推性最好。结论血清14-3-3β蛋白联合FeNO、用力呼出75%肺活量的呼气流量占预测值百分比可以显著提高儿童哮喘的诊断效能。

Combined liver-kidney transplantation for rare diseases

Combined liver and kidney transplantation(CLKT)is indicated in patients with failure of both organs,or for the treatment of end-stage chronic kidney disease(ESKD)caused by a genetic defect in the liver.The aim of the present review is to provide the most up-to-date overview of the rare conditions as indications for CLKT.They are major indications for CLKT in children.However,in some of them(e.g.,atypical hemolytic uremic syndrome or primary hyperoxaluria),CLKT may be required in adults as well.Primary hyperoxaluria is divided into three types,of which type 1 and 2 lead to ESKD.CLKT has been proven effective in renal function replacement,at the same time preventing recurrence of the disease.Nephronophthisis is associated with liver fibrosis in 5%of cases and these patients are candidates for CLKT.In alpha 1-antitrypsin deficiency,hereditary C3 deficiency,lecithin cholesterol acyltransferase deficiency and glycogen storage diseases,glomerular or tubulointerstitial disease can lead to chronic kidney disease.Liver transplantation as a part of CLKT corrects underlying genetic and consequent metabolic abnormality.In atypical hemolytic uremic syndrome caused by mutations in the genes for factor H,successful CLKT has been reported in a small number of patients.However,for this indication,CLKT has been largely replaced by eculizumab,an anti-C5 antibody.CLKT has been well established to provide immune protection of the transplanted kidney against donor-specific antibodies against class I HLA,facilitating transplantation in a highly sensitized recipient.

大连市PM_(2.5)-O_(3)复合污染特征及潜在源区分析

为探究PM_(2.5)-O_(3)复合污染特征并分析潜在源区,文章基于大连市2019年高时间分辨率PM_(2.5)和O_(3-8 h)监测数据和气象数据,分析复合污染时气象特征,计算潜在源贡献因子确定潜在源区。结果表明:海平面压力为1008.6~1016 hPa、温度为14.5~21℃、相对湿度为48%~59%时更易发生PM_(2.5)-O_(3)复合污染;大连市西北和西南方向气流占比最大,西南方向在春、秋、冬3季携带的PM_(2.5)浓度最高,可达82.55μg/m^(3),且春季携带的O_(3)浓度最高,为109.83μg/m^(3),西北方向夏季气流携带的O_(3)浓度最高,为122.02μg/m^(3)。大连市PM_(2.5)和O_(3)污染受到山东省东北部、京津冀西南部和渤海海域等地区远距离输送的影响。研究结果表明,发生PM_(2.5)-O_(3)复合污染的气象条件更为严苛,大气污染区域联合防控时应重点关注山东省东北部、京津冀西南部等城市的外来输送影响。

孕早期血清半乳糖凝集素3、微RNA-29a对孕妇发生妊娠糖尿病风险的预测价值分析

目的分析孕早期血清半乳糖凝集素3(Gal-3)、微RNA(miR)-29a对孕妇发生妊娠糖尿病(GDM)风险的预测价值。方法选取2021年3月至2022年3月在东部战区总医院进行围生期检查的60例GDM病人作为GDM组,同期体检健康的孕妇60例作为对照组。抽取病人空腹静脉血,检测并比较两组间病人孕早期血清Gal-3(以酶联免疫吸附测定检测)、miR-29a(PCR法)表达水平。绘制受试者操作特征曲线(ROC曲线)评估孕早期血清Gal-3、miR-29a水平预测孕妇发生GDM风险的价值,行多因素logistic回归分析影响孕妇发生GDM的因素。结果GDM组血清低密度脂蛋白胆固醇(LDL-C)、Gal-3[(40.31±4.12)μg/L比(35.79±3.58)μg/L]、糖化血红蛋白(HbA1c)、服糖后2 h血糖(2 hPG)、空腹血糖(FPG)、胰岛素抵抗指数(HOMA-IR)水平均明显高于对照组(P<0.05),空腹胰岛素(FINS)、miR-29a(26.78±2.72比30.46±3.09)水平明显低于对照组(P<0.05);绘制ROC曲线评估血清Gal-3、miR-29a水平预测GDM发生的价值显示,单独检测时,Gal-3的特异度86.67%最高,miR-29a的灵敏度90.00%最高,两者联合检测灵敏度、特异度均处于较高水平(95.00%、88.33%)。行多因素logistic回归分析显示,血清Gal-3、miR-29a、HOMA-IR、HbA1c为GDM发生的影响因素(P<0.05)。结论GDM病人孕早期血清Gal-3水平较高、miR-29a水平较低,可能为预测GDM发生的潜在指标,两者联合检测价值更高。

针药并用治疗慢性乙型重型肝炎的疗效观察及对PI3K/Akt/mTOR信号通路的影响

目的观察针药并用治疗慢性乙型重型肝炎的临床疗效,分析其对磷脂酰肌醇3-激酶(phosphoinositide 3-kinase,PI3K)/蛋白激酶B(protein kinase B,AKT)/哺乳动物雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)信号通路的影响。方法将75例慢性乙型重型肝炎患者随机分为观察组、对照A组和对照B组,每组25例。3组均予常规西医治疗,对照A组予以口服疏肝化瘀方治疗,对照B组予以针刺治疗,观察组予以针刺联合口服疏肝化瘀方治疗。比较3组临床疗效,观察3组治疗前后中医证候积分、肝功能[血清丙氨酸氨基转移酶(alanine aminotransferase,ALT)、天门冬氨酸氨基转移酶(aspartate transaminase,AST)水平]、肝纤维化指标[血清层黏连蛋白(laminin,LN)、透明质酸(hualuronic acid,HA)水平]、病毒性肝炎肝损伤指标[外周血淋巴细胞穿孔素(perforin,PRF)和颗粒酶B(granzyme B,GrzB)阳性细胞率]及PI3K、Akt、mTOR mRNA水平,并进行安全性分析。结果观察组总有效率高于对照A组和对照B组(P<0.05)。观察组治疗后中医证候积分低于对照A组和对照B组(P<0.05),血清ALT、AST、HA、LN水平低于对照A组和对照B组(P<0.05),外周血淋巴细胞PRF、GrzB阳性细胞率高于对照A组和对照B组(P<0.05),HBV-DNA载量低于对照A组和对照B组(P<0.05),外周血PI3K、Akt、mTOR mRNA水平低于对照A组和对照B组(P<0.05);对照A组、对照B组不同指标比较差异无统计学意义(P>0.05)。治疗期间3组均未出现不良反应。结论针药并用治疗慢性乙型重型肝炎,可提高临床疗效,改善临床症状、肝纤维化,减轻病毒性肝炎损伤,且具有一定安全性,其作用机制可能与抑制PI3K/Akt/mTOR信号通路活化有关。