The type, position and age effect on the cutting reproduction of Picea crassifolia and its rooting mechanism in the Qilian Mountains

Picea crassifolia Kom, a perennial arbor spe- cies is recognized as one of the most adaptable plants found to date in Qilian Mountains. To explore the cutting reproduction technology of P. crassifolia and reveal its rooting mechanism, cuttings of P. crassifolia with different cutting types （softwood, hardwood and root）, positions （top, upper, middle and bottom） and ages （7, 10, 15, 20, 25 year-old） were cultivated in a field experiment. One- year old softwood and hardwood cuttings were collected from 7-, 10-, 15-, 20-, and 25 year-old healthy ortets to analyze the changes from endogenous hormones and organic nutrients. Results indicate that the softwood cut- tings （0.5-1.0 cm in diameter） from upper branches of 15 year-old ortets shows better growth performance by improving rooting indexes, including a significant increasein rooting rate and a decrease in basal rot rate. Concomi- tantly, increasing rooting quantity and root length also increased. It is noteworthy that the high rooting rate of P. crassifolia cuttings due to its ability to accumulate high concentrations of indole-3-acetic acid （IAA） and total carbon （TC） rather than abscisic acid （ABA） and total nitrogen （TN）. The rooting rate was mainly regulated by the IAA/ABA and TC/TN ratio. In summary, our results suggest that the softwood cuttings （0.5-1.0 cm in diameter） from upper branches of 15 year-old P. crassifolia can be considered as an effective strategy to improve cutting rooting rate, and the IAA/ABA and TC/TN ratio was one of the main factors limiting the cutting rooting rate of P. crassifolia.

Effect of Different Indole-3-Buteric Acid(IBA)Concentrations and Cutting Types on Plane Trees(Platanus orientalis L.)

Effects of different Indole-3-Buteric Acid （IBA） concentrations （0, 1 000, 1 500 and 2 500 ppm） and curing types （soft wood, semi hard and hard wood） of plane tree were investigated with Randomized Complete Block Design （RCBD） at the Agricultural research station, Charsadda. The maximum survival percentage, plant height （cm）, root length （era）, numbers of roots and root weight per cutting were significantly higher in hard wood cuttings. IBA concentration had no speculative effect on plane tree cuttings. Thus, hard wood cutting was the best choice for plan tree propagation.

Vegetative propagation of Dalbergia sissoo:effect of growth regulators,length,position of shoot and type of cuttings on rooting potential in stem cuttings

The effect of auxins （IAA or IBA at 100, 200, 500 mg.L J） on rooting and sprouting parameters differed significantly （p 〈 0.05）. Rooting and sprouting percentages were higher in some treatments while other parameters were significantly higher in other treatments. The results of the present study revealed that rooting was significantly （p 〈 0.05） affected by the length of cuttings, as well as the position of shoots and type of cuttings. On average, 86.0 per cent rooting was observed in the 30-cm long cuttings com- pared to the other two lengths of cuttings, i.e., 20 and 25 cm, irrespective of any auxin treatment. In a control set, without any auxin treatment, a maximum of 60.0% rooting was recorded in the 30-cm long cuttings and a minimum of 40.0% of the cuttings rooted in the 20-cm long cuttings. Similarly, cuttings collected from the lower and upper portions of shoots resulted in 72.5 and 52.5 per cent rooting respectively, irrespective of auxin treatments. Maximum rooting was observed in the lower portion （40.0%） of cutting com- pared to the upper portion （30.0%） in the control set without auxin treatment. Leafless branches produced maximum （72.0%） rooting compared to the leafy cuttings （35.0%）, irrespective of the auxin treatment. The leafy cuttings produces a minimum of 15.0% sprout- ing and rooting in the control set.

Research on the Influence of Cutting Condition on the Surface Microstruct ure of Ultra-thin Wall Parts in Ultrasonic Vibration Cutting

In many fields of high-tech industry the ultra-t hi n wall parts are employed. In this paper the experiments were carried out to dis cuss the surface microstructure of the camera’s guided drawtube by applying ult rasonic vibration cutting device to the traditional lathe. The influence rule of the cutting condition on the surface roughness was put forward, which was drawn by comparing the ultrasonic cutting with the common cutting by use of the cemen ted carbide tool and the polycrystalline diamond (PCD) tool. The test results sh owed that the ultrasonic cutting performs better than the common cutting in the same condition. According to the test results analyzing, the surface characteriz ation is influenced clearly by the rigidity of the acoustic system and the machi ne tool, as well the setting height of the tool tip. Otherwise, the dense regula r low frequency vibration ripples will be scraped on the machined surface. When the tool tip is set higher than the rotating center of the work piece by three t imes of the amplitude of ultrasonic vibration, the vibration ripples behave alig ht; they turn light and shade alternatively when the tool tip is lower than the rotating center of the work piece by three times of the amplitude of ultrasonic vibration. According to the test result analyzing, the following conclusions are put forward: 1) The surface roughness in ultrasonic cutting is better than that in common cutting. Under a one third critical cutting velocity, the value of th e surface roughness in ultrasonic cutting rise slightly along with the cutting v elocity, while in common cutting it decreases contrast to the cutting velocity; the curves of the surface roughness in ultrasonic cutting and common cutting see m to be alike, both increase along with the feed rate and the cutting depth, but the value in ultrasonic cutting is smaller in the same condition.2) The influen ce of the coolant on the surface roughness cannot be ignored. The kerosene can b e employed to improve the surface roughness in ultrasonic machining.3) In ultras onic cutting process of aluminum alloy ultra-thin wall work piece, the PCD tool performs better than the cemented carbide tools.4) The vibration ripples result from the not enough rigidity of the acoustic system and the improper setting he ight of the tool tip. The departure of the tool tip from the rotating center of the work piece to some extent causes the vibration ripples on the machined surfa ce.

Effects of needling at Sanyinjiao(SP6)acupuncture point on blood glucose levels and cardiovascular functions in patients with type 2 diabetes mellitus:a randomized placebo-controlled study

Objective To determine the effect of needling at Sanyinjiao(SP6)on random blood glucose(RBG)levels and cardiovascular function in patients with type 2 diabetes mellitus(T2DM).Methods In this randomized placebo-controlled study,T2DM patients(aged 35-65 years)were recruited from the Government Yoga and Naturopathy Medical College and Hospital,Chennai,India,between January 5,2022 and March 15,2023.Participants were randomly as-signed to either acupuncture group or sham acupuncture group.The acupuncture group re-ceived bilateral needling at Sanyinjiao(SP6)while sham acupuncture group received needling at a non-acupuncture point[1.5 cun lateral to Sanyinjiao(SP6)]for 30 min.Primary outcome was RBG,and secondary outcomes included systolic blood pressure(SBP),diastolic blood pressure(DBP),pulse rate(PR),pulse pressure(PP),mean arterial pressure(MAP),rate pressure product(RPP),and double product(Do-P).All parameters were assessed imme-diately before and after intervention.Results A total of 100 patients with T2DM were enrolled in the study,and blinded to acupuncture group(n=50)and sham acupuncture group(n=50).Intergroup analysis showed that significant reductions in RBG(P<0.001),SBP(P=0.035),DBP(P=0.008),and MAP(P=0.009)were found in acupuncture group compared with sham acupuncture group.Within-group analysis showed significant reductions in RBG(P<0.001),SBP(P<0.001),DBP(P=0.008),PP(P=0.023),MAP(P<0.001),RPP(P<0.001),and Do-P(P=0.002)in acupunc-ture group,whereas sham acupuncture group showed a significant decrease in PR(P=0.023)only in the post-test assessment compared with pre-test assessment.Conclusion A period of 30 min of needling at the Sanyinjiao(SP6)acupuncture point re-duces RBG and promotes cardiovascular function in patients with T2DM as compared with needling at non-acupuncture points.Sanyinjiao(SP6)acupuncture may offer an immediate,non-pharmacological intervention to strengthen glycemic control management and cardio-vascular health in T2DM patients.

Frequency of the C677T Polymorphism of MTHFR, G20210A of Prothrombin and R506Q of Factor V Leiden in Type 2 Diabetics in Abidjan

In Africa, the prevalence of diabetes is escalating and remains a concern due to the numerous complications it causes. Vascular damage associated with diabetes leads to a prothrombotic state observed in diabetic individuals. Diabetes is a complex and multifactorial disease involving genetic components. With the aim of preventing complications and contributing to an efficient management of diabetes, we investigated genes likely to lead to a risk of thrombosis, in particular the C677T of MTHFR, G20210A of prothrombin, and R506Q of factor V Leiden in type 2 diabetics in Abidjan receiving ambulatory care. A descriptive cross-sectional study was carried out on consenting type 2 diabetic patients. Mutation detection was carried out using the PCR-RFLP method employing restriction enzymes. Hemostasis tests (fibrinogen, D-dimers, fibrin monomers, and von Willebrand factor) were performed using citrate tubes on the Stage? Star Max automated system. Plasminogen activator inhibitor was assayed by ELISA method, and biochemical parameters were determined using the COBAS C311. The study population consisted of 45 diabetic patients, 51.1% of whom presented vascular complications, mainly neuropathy. Disturbances in hemostasis parameters were observed, with 15.5% of patients showing an increase in fibrin monomers. Mutation analysis revealed an absence of factor V mutation (factor V Leiden) and of G20210A mutation of the prothrombin gene. However, 15.6% of subjects had a heterozygous C677T mutation of MTHFR, with 57% of them being anemic. The exploration of biological and genetic factors associated with thrombotic risk is of significant interest in the optimal management of African type 2 diabetics.

Systematic Review of Community Type 2 Diabetes Structured Health Education (CT2DSHE)

Aim: This paper aims to evaluate disparities of type 2 diabetes structured health education programmes that is utilised within the communities. Design: systematic review, (a type of secondary research design) aiming to summarize the results of prior primary research studies on available evidence Community type 2 diabetes structured education (CT2DSHE). Methods: Research question: Type 2 diabetic structured health education within a community how effective is it? Qualitative Systematic review, defined as a way to get reliable and objective picture of current available evidence on the specific topic—(CT2DSHE), (Denscombe, 2021) through reflexivity synthesis of available data as an example. This is valuable in time constraints such as project assignments that must be met within specific time and also to bring together available evidence together [1]. Results: This review has shown that CT2DSHE is effective with seven out of the eleven authors supporting, three authors against and one was neutral, further showed that knowledge and skills acquired can last longer with patient activation improved among T2DM patients ideal for sustaining their self-management of T2DM. Conclusion: This research provides suggestive answers to the research question: “Type 2 diabetic structured health education within a community how effective is it?”, This has demonstrated CT2DSHE effectiveness in knowledge acquisition and improving T2DM awareness among T2DM patients, whilst evidencing long effects beyond the study times of 3 - 9 months period in relation to patient activation. Also Identified diabetes education self-management on newly diagnosed (DESMOND) patient as CT2DSHE program for recommendation. Patient or Public Contribution: This work aspires to contribute to CT2DSHE in these areas;Influencing policy decision-making for community diabetes care within the UK and world at large., Contributing to already vast knowledge on diabetes self-management and reasons why?, Influencing educators on how CT2DSHEP are designed, delivered by putting the patient at the Centre and bringing different perspectives on CT2DSHEP in one place that is serving users time of having to consult several resources especially busy clinicians [2] [3].

Elevated Plasma Tissue-type Plasminogen Activator (t-PA) and Soluble Throm-bomodulin in Patients Suffering From Severe Acute Respiratory Syndrome (SARS) as a Possible Index for Prognosis and Treatment Strategy

To detect the presence of endothelial injury in patients with severe acute respiratory syndrome （SARS） via enhanced levels of tissue-type plasminogen activator （t-PA） and soluble thrombomodulin （sTM）. Methods Case patients were from Xuanwu Hospital （Capital University of Medical Sciences, Beijing, China）, and all of them met clinical criteria for SARS. Healthy controls were some of the hospital employees. Endothelial injury bio-markers tPA and sTM were detected by commercial ELISA-methods. Results Classic plasma markers of endothelial injury, tPA and sTM significantly elevated in SARS patients in comparison to controls [t-PA： 1.48±0.16 nmol/L versus 0.25±0.03 nmol/L （P〈0.0001）, and sTM： 0.26±0.06 nmol/L versus 0.14±0.02 nmol/L （P〈0.05）]. The only patient who died had extremely high levels of these endothelial injury markers （t-PA： 2.77 nmol/L and sTM： 1.01 nmol/L）. The likelihood ratio analysis indicated the excellent discriminating power for SARS at the optimal cut-point of 0.49 nmol/L for tPA and 0.20 nmol/L for sTM, respectively. Significant numerical correlations were found among these endothelial injury markers in SARS patients. The numerical coefficient of correlation Pearson r between t-PA and sTM was 0.5867 （P〈0.05）. Conclusion Increased plasma concentrations of tPA and sTM in patients with SARS suggest the possibility of endothelial injury. SARS patients might need anticoagulant therapy or fibrinolytic therapy in order to reverse intraalveolar coagulation, microthrombi formation, alveolar and interstitial fibrin deposition. It may not only provide a useful treatment and prognostic index but also allow a further understanding of the pathological condition of the disease.

温肺祛痰散对稳定期慢性阻塞性肺疾病患者外周血T淋巴细胞、血清IL-2及sIL-2R的影响

目的:观察温肺祛痰散对稳定期慢性阻塞性肺疾病(COPD)患者外周血T淋巴细胞、血清白细胞介素-2(IL-2)及可溶性白细胞介素-2受体(sIL-2R)的影响,为临床治疗提供参考。方法:选取痰浊阻肺型稳定期COPD患者60例,采用随机数字表法分为两组,每组30例。两组患者均给予缩唇腹式呼吸。对照组给予噻托溴铵治疗,观察组给予噻托溴铵+温肺祛痰散治疗。记录两组治疗前、治疗后中医症候积分、咳嗽评分、生活质量评分及外周血T淋巴细胞、血清IL-2、sIL-2R水平变化,并记录两组疗效和COPD急性发作次数。结果:观察组治疗8周总有效率高于对照组,随访6个月内COPD急性发作次数少于对照组(P<0.05);治疗后两组生活质量评分、CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)、IL-2升高(P<0.05),中医症候积分、咳嗽评分、CD8^(+)、sIL-2R降低(P<0.05),观察组生活质量评分、CD3^(+)、CD4^(+)、CD4^(+)/CD8^(+)、IL-2高于对照组(P<0.05),中医症候积分、咳嗽评分、CD8^(+)、IL-2、sIL-2R低于对照组(P<0.05)。结论:温肺祛痰散可提高稳定期COPD患者免疫功能,调节血清IL-2及sIL-2R的表达,改善症状,提高生活质量。

基于Type-2 T-S的模糊脉冲控制

利用Type-2模糊系统在描述复杂非线性系统诸多不确定性问题时的有效性,在Type-1模糊脉冲控制的基础上,提出了区间Type-2 T-S模糊脉冲控制方法.该方法利用Type-2模糊隶属函数的"宽带"效应,解决了Type-1模糊脉冲控制中数据噪声和外界扰动问题;利用Lyapunov理论和Lipschitz条件,通过运用比较方法和线性矩阵不等式等综合方法,设计Type-2 T-S模糊脉冲控制器,给出系统的渐进稳定性分析;最后,在倒立摆系统的仿真中,较方便地确定了隶属函数并选取了较少的模糊规则,表明系统的有效性和优异性.

区间Type-2 T-S间接自适应模糊控制

本文在Type-1 T-S间接自适应模糊控制器的基础上,利用Type-2模糊系统理论,提出了区间Type-2 T-S间接自适应模糊控制器的设计方法.由于该系统的规则前件是区间Type-2模糊集合,后件为精确数,使构造的控制方法既具备Type-2模糊集处理诸多不确定性的特点,能够减少由于规则不确定对系统的影响,同时又具有T-S模糊模型后件为各输入变量的线性组合的特点,可以提高系统的建模精度,减少系统的规则数等优点.本文利用Lyapunov合成方法,研究了在所有变量一致有界的意义下,闭环系统的全局稳定性,分析了区间Type-2 T-S间接自适应模糊控制系统的收敛性,并给出了系统参数的自适应律.通过倒立摆跟踪模型进行仿真,验证其有效性和优越性.

一种基于GMM和Graph Cuts的图像分割方法

图像分割是图像处理中的基础问题。研究利用GMM构造T链的可行性,并探索一种可以兼顾精度与速度的确定GMM中K值的方法,结合GMM和Graph Cuts理论完成了对不同图像的分割实验。实验表明,文中的分割方法准确、有效。

Type-2模糊逻辑系统研究

对Type-2模糊系统进行了研究,系统地分析了Type-2模糊系统的基本理论和基本框架,给出了该系统在具体处理实际问题时应采用的相应方法,阐述了Type-2模糊系统应用发展方向并提出今后需要解决的问题。

淋巴结滤泡辅助T细胞淋巴瘤伴B细胞克隆性增生10例临床病理特征分析

目的探讨淋巴结滤泡辅助T细胞淋巴瘤血管免疫母细胞型(nodal follicular helper T cell lymphoma,angioimmunoblastic-type,nTFHL-AI)伴B细胞克隆性增生的临床病理学特征、免疫表型、分子特征、治疗及预后。方法收集10例nTFHL-AI伴B细胞克隆性增生患者的临床病理资料,分别行HE、免疫组化和基因重排检测,并复习相关文献。结果10例患者中男性5例,女性5例,中位年龄73岁。临床表现以全身淋巴结肿大、脾肿大及B症状为主;Ann Arbor分期:Ⅳ期8例,Ⅰ+Ⅱ期2例。实验室检查以β2微球蛋白和乳酸脱氢酶(LDH)升高,血红蛋白、红细胞和血小板减少为主,血浆EBV核酸定量阳性8例。镜下均可见典型结节状聚集或散在的透明细胞、分枝状高内皮血管及增生杂乱“风吹”状的滤泡树突网。肿瘤细胞背景中嗜酸性粒细胞浸润0~5个/HPF 7例,5~10个/HPF 2例,>50个/HPF 1例。浆细胞含量≤5%6例,浆细胞含量10%和20%各1例,浆细胞含量较多(30%)2例。组织细胞明显增生7例。见RS样大细胞1例。背景中含大量B细胞5例,含少量B细胞5例。10例患者均表达T细胞标志物,滤泡辅助性T细胞标志物CD10、BCL6、CXCL13和PD-1同时阳性6例,BCL6、CXCL13和PD-1同时阳性10例。EBER原位杂交阳性8例。10例患者均检测到TCR基因重排和IG基因重排阳性。所有患者诊断后均行化疗,其中3例疾病进展死亡。结论伴B细胞克隆性增生nTFHL-AI中,B细胞的克隆性增生与EBV是否感染及感染细胞的数量无关,同时浆细胞增生提示预后不良。

基于电压残差的T形逆变器开路故障诊断方法

针对T形逆变器发生开路故障后容易导致输出谐波增大、抗干扰能力差的问题,提出一种基于电压残差的T形三电平逆变器开路故障诊断方法。首先分析T形逆变器的工作原理和开路故障特性,通过空间矢量脉宽调制技术,建立系统的状态空间模型。其次,利用正常工况下线电压的参考值与实际传感器测量所得到的电压值进行比较,结合低通滤波处理获得电压残差信号,将其与故障检测阈值对比判断系统是否发生故障。然后建立诊断变量与故障开关管之间的逻辑关系,实现逆变器单管故障的精确定位。最后,通过MATLAB平台对所提出的故障诊断方法进行验证,仿真结果表明,该方法的故障诊断速度快、易于实现且可靠性高。

低周反复荷载下T型双波纹钢板混凝土组合剪力墙受力性能试验研究

为研究低周反复荷载下T型双波纹钢板混凝土组合剪力墙的受力性能,对5个T型双波纹钢板混凝土组合剪力墙进行了低周反复加载试验。基于试验数据,分析了T型组合剪力墙的破坏模式、滞回曲线、变形能力及耗能能力,重点研究了边缘约束条件、波纹类型以及轴压比不同变化参数对T型组合剪力墙抗震性能指标的影响规律。研究结果表明:T型双波纹钢板混凝土组合剪力墙破坏模式主要有压屈破坏和压弯破坏两种;设置边缘约束构件是提高T型双波纹钢板混凝土组合剪力墙承载能力和变形能力的关键因素;纵向窄波纹钢板对内部混凝土的约束能力更强,在低周反复荷载下两者协同工作性更优,而横向窄波纹钢板试件强度退化最严重;采用全截面塑性设计方法进行T型双波纹钢板混凝土组合剪力墙正截面承载力计算,试验值与计算值吻合良好;T型双波纹钢板混凝土组合剪力墙具有较好的承载能力和变形能力,可适用于高层及超高层建筑结构中。

金匮肾气丸联用cART对HIV-1感染者的疗效及不良反应分析

获得性免疫缺陷综合征(acquired immunodeficiency syndrome,AIDS)的主要治疗方法为联合抗逆转录病毒治疗(combined antiretroviral therapy,cART),但部分患者由于免疫功能重建不全和不良反应,可能出现药物性肝损伤、消化功能下降、神经系统毒性和代谢紊乱等,严重影响了抗病毒疗效和患者生存质量,已成为AIDS治疗领域的瓶颈[1]。部分国家资助的中医药防治AIDS科研课题提出正虚(主要为肾虚)是AIDS发生发展的内在病理基础,以肾气与肾阴肾阳的功能下降为主要特征[2-3]。补肾制剂可能是缓解人类免疫缺陷病毒(human immunodeficiency virus,HIV)感染患者病情和不良反应的可靠方式。金匮肾气丸是由地黄、山药、茯苓、牡丹皮、山茱萸、牛膝、泽泻等多味中药制成的综合制剂[4],具有温补肾阳、化气行水的作用。本研究首次采用金匮肾气丸与cART联用治疗HIV-1感染者,比较了金匮肾气丸与cART联用、单用cART对HIV-1感染者抗病毒疗效和不良反应的差异,试图为探索HIV-1感染者治疗的新途径提供参考。

Role of immune dysfunction in pathogenesis of type 1 diabetes mellitus in children

Objective:To investigate the function of cytokines,chemokines,and regulatory T cells(Tregs)in the pathogenesis of Type 1 diabeles mellitus(T1DM)in children.Methods:A total of 35 children with T1DM and 30 healthy controls were enrolled in this study.Levels of serum cytokines(IL-1α,IL-6,IL-10,IL-12,and TNF-α)and chemokines(MIP-1α,MIP-1βand MCP-1)were detected by enzyme-linked immunosorbent assay.Peripheral blood mononuclear cells(PBMCs)were isolated and culture supernatant of phytohaemagglutinin(PHA)-stimulatcd PBMCs was subjecled to ELISA for levels of cytokines(IL-1α,IL-6,IL-10,IL-12 and TNV-α)in T1DM and control group.Furthermore,flow cytometty was used to determine the percentage of Tregs in PBMCs of two groups.Results:Levels of serum cytokines including IL-1α,IL-6,IL-10 andd TNF-αas well as chemokines,such as MIP-1αand MIP-1βin children with T1DM children were significantly higher than those in healthy controls(P<0.05,respectively).PBMCs with PHA stimulation in T1DM group secreted more IL-1αand TNF-α(P<0.05,respectively),but less IL-10(P<0.05),as compared with control group.Furthermore,the proportion of CD4^+,CD25^+,Foxp3.Tregs in PBMCs isolated from children with T1DM was obviously lower than those in heathy controls(P<0.05).Conclusions:Immune dysfunction.with uprcgulation of inflanunatory factors such as IL-1α.IL-6.TNF-αand MIP-1α.downregulation of IL-10 and Tregs,plays an important role in the pathogenesis of T1DM in children.

不同中医证型特应性皮炎患者外周血Th1、Th2、Th17细胞及miR-155表达分析

目的:分析研究不同中医证型特应性皮炎(AD)患者外周血辅助性T细胞1(Th1)、Th2、Th17细胞及微小RNA-155(miR-155)表达。方法:回顾性选取2021年6月~2022年6月我院收治的AD患者作为AD组(n=112),根据不同中医证型将患者分为脾虚湿蕴组(n=46)、湿热内蕴组(n=37)和血虚风燥组(n=29),另选60例本院同期体检健康人群为对照组(n=60)。比较各组外周血Th1、Th2、Th17细胞百分比差异、Th1类细胞因子(IFN-γ)、Th2类细胞因子(IL-4)、Th17类细胞因子(IL-17)及miR-155表达。结果:AD组外周血Th1、IFN-γ水平低于对照组,Th2、Th17、IL-4、IL-17、miR-155表达均高于对照组(P<0.05);不同中医证型的AD患者外周血Th1、IFN-γ水平比较差异无统计学意义(P>0.05);不同中医证型的Th2、Th17、IL-4、IL-17表达水平相比,湿热内蕴组>脾虚湿蕴组>血虚风燥组(P<0.05);不同中医证型的miR-155表达水平相比,湿热内蕴组>脾虚湿蕴组>血虚风燥组(P<0.05)。结论:不同中医证型AD患者外周血Th2、Th17细胞及相关细胞因子与miR-155表达存在差异性,检测其表达水平有助于指导AD中医辨证分型和治疗。

Forkhead box protein A2 and T helper type 2-mediated pulmonary inflammation

The transcription factor forkhead box protein A2(FOXA2, also known as hepatocyte nuclear factor 3β or transcription factor 3β), has been found to play pivotal roles in multiple phases of mammalian life, from the early development to the organofaction, and subsequently in homeostasis and metabolism in the adult. In the embryonic development period, FOXA2 is require d for the formation of the primitive node and notochord, and its absence results in embryonic lethality. Moreover, FOXA2 plays an important role not only in lung development, but also in T helper type 2(Th2)-mediated pulmonary inflammation and goblet cell hyperplasia. In this article, the role of FOXA2 in lung development and Th2-mediated pulmonary inflammation, as well as in goblet cell hyperplasia, is reviewed. FOXA2 deletion in airway epithelium results into Th2-mediated pulmonary inflammation and goblet cell hyperplasia in developing lung. Leukotriene pathway and signal transducers and activators of transcription 6 pathway may mediate this inflammation through recruitment and activation of denditric cell during lung developments. FOXA2 is a potential treatment target for lung diseases with Th2 inflammation and goblet cell hyperplasia, such as asthma and chronic obstructive pulmonary disease.