血清三叶因子3水平对结直肠癌诊断的价值

目的 探究血清三叶因子3(trefoil factor 3,TFF3)水平在结直肠癌诊断中的价值.方法 收集180例受试者(89例结直肠癌患者,44例结直肠息肉患者和47例健康对照者)血清,采用酶联免疫吸附法测定血清TFF3水平.将结直肠癌组血清TFF3水平与对照组作对比,绘制ROC曲线,评估血清TFF3作为肿瘤标志物对结直肠癌的诊断价值.结果 结直肠癌患者血清TFF3水平[12.35(9.72～13.92)ng/mL]显著高于结直肠息肉组(3.18±0.18ng/mL,P<0.05)和健康对照组(3.14±0.11ng/mL,P<0.05);与健康对照组相比,结直肠息肉组患者血清TFF3水平的升高差异无统计学意义(P>0.05).血清TFF3诊断结直肠癌的ROC曲线下面积为0.889,在cut-off值为4.6149ng/mL时,血清TFF3对结直肠癌的诊断灵敏度和特异性分别为73.7％和91.8％.淋巴结转移和分化程度低的结直肠癌患者,其血清TFF3水平显著升高(P<0.05).结论 本研究显示血清TFF3是一个能够有效诊断结直肠癌的血清标志物,具有一定的临床诊断价值.     

血清铁蛋白与骨髓增生异常综合征危险度分层和预后的关系分析

目的 探讨血清铁蛋白水平在骨髓增生异常综合征(MDS)患者中危险度分层及预后评估的临床意义.方法 对41例初诊MDS患者和30名健康对照者采用电化学发光免疫法测量血清铁蛋白(SF),观察MDS患者SF水平及与国际预后评分系统(IPSS)的关系.对MDS患者进行随访,根据铁蛋白水平和IPSS评分的数值绘制ROC曲线,并将患者分组分为相对低危组(SF＜ 577ng/mL)和相对高危组(SF≥577ng/mL),比较两组间白血病转化率和生存时间.结果 MDS组患者铁蛋白水平明显高于健康对照组(P＜0.05),相对低危组与相对高危组之间铁蛋白水平差异有统计学意义(P＜0.05),随访的39位患者中共12人转化为急性白血病,两组转化率分别为10.5％和45.5％,向白血病转化的中位时间分别为18.5(4 ～46)个月和30.0(6 ～48)个月,差异有统计学意义(P＜0.05),两组间生存时间差异无统计学意义(P＞0.05).结论 铁蛋白在MDS患者中高于正常水平,初诊未输血的患者存在铁过载,高危类型MDS患者的SF水平较高,SF水平与其不良预后有一定的相关性.     

高压氧治疗创伤性脑损伤的临床疗效及对血清NGAL和泛素羧基末端水解酶L1表达的影响

目的评价高压氧辅助治疗创伤性脑损伤患者的临床疗效及对血清中性粒细胞明胶酶相关载脂蛋白(NGAL)和泛素羧基末端水解酶L1(UCH-L1)表达的影响。方法选择2018年4月至2019年4月入新疆医科大学第一附属医院诊断创伤性脑损伤患者68例,其中其中男性46例,女性22例;年龄23～69岁,平均年龄45.9岁;体质量(68.6±8.9) kg;格拉斯哥昏迷评分(GCS)3～11分,平均GCS为8.4分;发病时间为(6.8±2.5) h。随机分为对照组和观察组,每组34例。对照组常规外科手术和药物治疗,观察组联合高压氧辅助治疗,疗程为1个月。对比两组临床疗效,治疗前后血清氧化应激指标包括NGAL、基质金属蛋白酶(MMP)-9、脑氧摄取率(CERO2)和活性氧(ROS)水平,神经营养因子包括UCHL1、神经元特异性烯醇化酶(NSE)和S100-β水平。结果观察组总有效率显著高于对照组(94.1%vs 76.5%;P 0.05)。两组治疗后血清氧化应激指标NGAL、MMP-9和ROS水平较治疗前降低[观察组:(63.5±22.4) ng/mL vs (125.3±45.6) ng/mL;(68.5±21.2) ng/mL vs (168.8±55.6) ng/mL;(16.8±6.3) U/mL vs (27.4±7.9) U/mL。对照组:(88.9±23.5) ng/mL vs (123.8±44.9) ng/mL;(96.3±25.7) ng/mL vs (165.8±52.3) ng/mL;(21.2±6.6) U/mL vs (26.8±7.5) U/mL],CERO2增加[观察组:(39.6±12.2)%vs (30.3±9.2)%;对照组:(35.2±10.3)%vs (30.6±9.5)%],神经营养因子UCH-L1、NSE和S100-β水平较治疗前降低[观察组:(201.3±46.8) ng/mL vs (328.6±75.4) ng/mL;(167.8±35.8) ng/mL vs (267.9±65.3) ng/mL;(85.6±25.7) ng/mL vs (168.9±48.7) ng/mL。对照组:(256.4±53.2) ng/mL vs (326.5±65.8) ng/mL;(203.2±46.3) ng/mL vs (265.3±52.7) ng/mL;(112.3±35.6) ng/mL vs (165.9±45.3) ng/mL],且观察组较对照组改善更明显(P 0.01)。结论高压氧辅助治疗创伤性脑损伤患者有较好的安全性和有效性,可明显抑制中枢神经氧化应激和神经营养因子释放和表达。     

溃疡性结肠炎患者血清NGAL检测及意义

目的 探讨溃疡性结肠炎(UC)患者血液中NGAL的含量和意义.方法 使用胶乳增强免疫比浊法检测89例UC患者血清中NGAL含量并与对照组比较.分析NGAL水平与UC患者WBC数量、PLT数量、CRP和Hgb、HCT、ESR、年龄、疾病活动程度(DAI)关系.结果 UC患者血清中NGAL水平显著高于健康对照组,中位数分别为112ng/mL和48.2ng/mL,差异有统计学意义(P ＜0.0001).血清NGAL水平在轻度和中、重度UC患者血清NGAL中位数分别为78.2ng/mL和67.2ng/mL,差异有统计学意义(t=3.981,P=0.006).UC患者血清NGAL水平与WBC数量、PLT数量、CRP和Hgb、HCT、ESR、年龄无关(P＞0.05),与疾病活动程度(DAI)轻度相关(r=0.525,P＜0.0001).结论 溃疡性结肠炎患者血清NGAL水平升高,升高水平与疾病活动程度有关,但是其在疾病中的作用尚需进一步研究.     

血清CXCL12和IL-33在急性缺血性脑卒中预后评估中的价值

目的:探讨血清CXCL12 和IL-33 在急性缺血性脑卒中预后评估中的价值。方法:选取2014 年12 月至2016年6 月到本院就诊的急性缺血性脑卒中患者作为病例组(122 例),同时选取本院同期健康体检人群作为正常组(59 名),采用ELISA 法检测研究对象入组时血清CXCL12 和IL-33 的水平。参照mRS 评分将患者分为预后良好组(86 例)和预后不良组(36 例),并通过受试者工作特征曲线(ROC)和曲线下面积(AUC)评价血清CXCL12 和IL-33 在急性缺血性脑卒中患者预后评估中的作用。结果:急性缺血性脑卒中患者血清CXCL12 水平明显高于对照组[8.0 ng/ ml(IQR,6.7-8.9) VS 3.0 ng/ ml(IQR,2.3-3.8),P<0.001],IL-33 水平明显高于对照组[65.25 ng/ L(IQR,56.05-71.08)VS 35.30 ng/ L(IQR,26.73-42.55),P<0.001];急性缺血性脑卒中预后良好组患者血清CXCL12 水平明显低于预后不良组[7.4 ng/ ml(IQR,6.3-8.3) VS 9.3 ng/mL(IQR,8.3-11.1),P<0.001],预后良好组患者IL-33 水平明显高于预后不良组[66.81 ng/ L(IQR,61.12-73.29)VS.55.38ng/ L(IQR,46.75-64.71),P<0.001]经Pearson 相关性分析显示血清CXCL12 和IL-33 水平与mRS 评分分别呈正相关和负相关(r =0.524,P<0.001;r =-0.443,P<0.001)。血清CXCL12、IL-33 评估急性缺血性脑卒中预后的曲线下面积分别为0.835、0.784,灵敏度分别为77.8%、83.4%,特异度分别为73.3%、66.7%。结论:血清CXCL12 和IL-33 可能作为急性缺血性脑卒中患者预后评估的标志物。     

PPROM孕妇血清中Gal-1、Gal-3水平对亚临床绒毛膜羊膜炎的预测价值

目的 探讨未足月胎膜早破孕妇血清中Gal-1、Gal-3水平对亚临床绒毛膜羊膜炎的预测价值.方法 选取2019年4月至2020年3月于徐州医科大学附属医院住院分娩的未足月胎膜早破孕妇(妊娠28～33周+6)40例,选取同期与之胎龄匹配的无产科并发症的孕妇40例作为对照.测定母体血清中Gal-1、Gal-3的表达水平,未足月胎膜早破孕妇分娩后取胎膜组织进行病理学检查.结果 未足月胎膜早破孕妇血清中Gal-1[4.89(4.34～5.97)ng/mL]、Gal-3[43.72(38.99～47.02)ng/mL]水平明显高于对照组(P<0.05),差异具有统计学意义.未足月胎膜早破合并有亚临床绒毛膜羊膜炎孕妇血清中Gal-1[5.91(5.09～6.22)ng/mL]、Gal-3[47.01(45.54～48.76)ng/mL]水平明显高于未足月胎膜早破孕妇未合并亚临床绒毛膜羊膜炎组(P<0.05),差异具有统计学意义.ROC曲线分析结果,Gal-1、Gal-3诊断未足月胎膜早破合并亚临床绒毛膜羊膜炎的灵敏度分别为77.8％、88.3％;特异性分别为86.4％,95.5％.结论 未足月胎膜早破合并亚临床绒毛膜羊膜炎孕妇血清中Gal-1、Gal-3水平显著升高,Gal-1、Gal-3可能既是未足月胎膜早破病理生理的启动因子,也是预测PPROM合并亚临床绒毛膜羊膜炎的标志物.     

血清25(OH)D与克罗恩病患者病变部位及疾病严重程度的相关性研究

目的 探讨克罗恩病(Crohn’s disease, CD)患者血清25(OH)D水平与病变部位、疾病活动性、肠道炎症程度以及激素治疗等因素的相关性。方法 收集2020年1月至2022年12月在南京鼓楼医院就诊的CD患者97例，及同期在体检中心进行健康体检者79例。比较两组人群25(OH)D水平的差异。记录CD患者就诊时的一般资料、临床表现、肠镜检查结果、白细胞计数(WBC)、血红蛋白(Hb)、C反应蛋白(CRP)、血沉(ESR)、血清白蛋白(ALB)水平及用药情况，并分析25(OH)D水平与其相关性。结果 CD组的25(OH)D水平显著低于健康对照组[12.87(3.00～33.84)ng/mL vs 19.97(16.28～39.61)ng/mL](Z=-8.518,P<0.001),回结肠病变的CD患者25(OH)D水平显著低于回肠病变者[11.07(3.00～33.84)ng/mL vs 14.68(3.00～27.59)ng/mL](Z=-2.081,P=0.037),回结肠病变的CD患者25(OH)D水平明显低于结肠病变者[11.07(3.00～33.84)ng/mL...     

非酒精性脂肪性肝病患者血清硫氧还蛋白、铁蛋白、瘦素水平测定

目的研究血清硫氧还蛋白(TRx)、铁蛋白(Fer)、瘦素(Lep)与非酒精性脂肪性肝病的关系。方法应用全自动生化分析仪检测ALT、AST,放射免疫法和ELISA法检测Lep、Fer、TRX。结果非酒精性脂肪性肝病组中TRX、Fer、Lep高于对照组,TRX、Fer、Lep检测值在NASH组中分别为[(66.18±20.96)ng/mL、(350.56±47.06)ng/mL、(16.57±6.88)ng/mL],单纯性脂肪肝组中[(35.72±8.68)ng/mL、(163.98±39.41)ng/mL、(7.68±5.14)ng/mL],正常对照组中[(25.53±6.59)ng/mL、(117.40±31.43)ng/mL、(5.49±4.08)ng/mL]。结论联合动态监测ALT、AST、TRX、Fer、Lep有助于判断肝脏炎症及纤维化状况。     

慢性湿疹及慢性荨麻疹患者血清胃泌素的变化及其临床意义

目的:研究慢性湿疹及慢性荨麻疹患者血清胃泌素的变化及其临床意义。方法:应用放射免疫分析测定63例慢性湿疹及37例慢性荨麻疹患者血清胃泌素水平, 43例年龄、性别相匹配的健康志愿者作为正常对照。结果:慢性湿疹组、慢性麻荨疹组与正常对照组血清胃泌素水平分别为(102 95±27 33)ng/L、(109 87±33 64)ng/L和(61 72±20 38)ng/L。经统计学分析,两疾病组与对照组之间均有显著性差异(P<0 01,P<0 01),而两疾病组之间无明显差异(P>0 05)。结论:慢性湿疹及慢性荨麻疹患者血清中胃泌素水平均增高,为临床治疗提供一定的指导意义。     

肺癌患者血清中游离DNA含量与肿瘤标志物相关性分析

通过对52例肺癌患者、8例肺部良性疾病患者和10名健康人血清游离DNA含量与肿瘤标志物(TM)CA19-9、CA125、CYFRA21-1、CEA和NSE的联合检测,对两种检测结果作相关性分析。将表皮生长因子受体(EGFR)作为肿瘤基因标志物,运用荧光定量RT-PCR方法检测血清游离DNA含量。结果显示,10名健康人血清游离DNA含量平均为18.81ng/mL(范围:0.17~54.64ng/mL)。若以19ng/mL作为血清游离DNA含量的阳性临界值,则87.5%的健康人低于此水平。8例肺部良性疾病患者游离DNA含量均值为76.86ng/mL(范围:5.33~189.7ng/mL),其中4例(50%)高于阳性临界值。52例肺癌患者游离DNA均值为107.6ng/mL(范围:6.39~1617ng/mL),37例(71.2%)的肺癌患者血清游离DNA含量高于正常值。血清游离DNA含量诊断肺癌的价值等同于肿瘤标志物五项指标联合检测。其灵敏度、特异性、准确性分别为:71.15%,50%,68.3%,提示血清游离DNA含量作为一项新颖肿瘤标志物具有潜在的临床诊断价值。     

Modes of Inheritance of Errors of Refraction

Eighteen families in which both parents had refractions within the range of +4·0 D to −4·0 D and axial lengths seen in emmetropia (22·3-26·0 mm) showed coefficients of correlation of the order 0·5 indicative of polygenic inheritance. Such coefficients were seen for axial length (0·407) and for the cornea (0·487), but not for the lens (which is known to be yoked to the axial length). No such coefficients were seen in 19 families in which one of the parents had axial length outside the emmetropic range (nine families with long axes and 10 with short axes).

The pattern of polygenic inheritance for emmetropia (completely correlated optical components) and errors of refraction up to 4·0 D (inadequately correlated components: correlation ametropia) follows that seen in stature and other measurable characters. In contrast the high refractive errors with their abnormal axial lengths (component ametropia) are—like the extremes in stature—pathological anomalies with monofactorial inheritance.

     

Recovery of responsiveness of cells of lateral geniculate nucleus of rat

1. Recovery of responsiveness of single cells in lateral geniculate nucleus of rat has been determined in both P and I cells. There are three types of recovery curve among P cells; (a) early recovery, (b) early partial recovery followed by depression and then complete recovery, (c) prolonged depression followed by cyclic recovery. Type (c) is by far the commonest recovery curve. In contrast to the spike in a P cell, the synaptic potential recovers to its full amplitude in about 20 msec. All I cells exhibit similar rapid recovery curves after a prolonged depression.2. Conditioning stimuli applied to visual cortex also produce a prolonged depression in most P cells but I cells can be re-excited at short intervals from cortex. Decortication does not prevent the prolonged depression of the multineuronal response produced by optic nerve stimulation.3. A neuronal model is proposed to explain these observations. It is supposed that I cells (interneurones) are innervated by axon collaterals of the P cells (principal cells, projecting to visual cortex) and that the I cells exert an inhibitory influence on the P cells.     

Level of functioning of siblings and parents of probands of varying degrees of retardation

A further analysis of already published data supports the position that retardates of low ability level less frequently have retarded siblings, retarded parents, and parents low in occupational level than do retardates higher in ability level. The analysis supports the position that there are two types of retarded individuals, persons retarded as a result of gene or chromosomal anomalies, brain injury, etc., who more frequently occur in the lower-level retardate group, and persons whose retardation represents polygenic segregation, who more frequently occur in the higher-level group.     

Analysis of two types of dopaminergic responses of neurons of the spinal ganglia of rats

It was established, in experiments on isolated spinal ganglia of adult rats in concluons of intracellular recording, that dopamine (1 M/liter) elicits depolarized responses in 61% of neurons, hyperpolarized in 20% of neurons, and depolarized-hyperpolarized in 19% of neurons. The depolarized responses are associated with the activation of D₁ dopamine receptors, and are governed by the shift of cAMP-dependent cation (sodium) channels to the conducting state. The hyperpolarized responses are triggered by the activation of D₂ dopamine receptors, which by means of HTP-binding protein convert the potassium channels to the conducting state. The change in the polarization of neurons with the action of dopamine influences their electrical excitability variously.Translated from Fiziologicheskii Zhurnal SSSR imeni I. M. Sechenova, Vol. 76, No. 6, pp. 739–745, June, 1990.     

局部注射辛伐他汀对骨质疏松大鼠股骨髁骨小梁的改建效应

背景：局部注射具有成骨作用的辛伐他汀,可显著增加骨质疏松大鼠股骨颈及股骨髁部的骨密度及力学强度,分析局部注射辛伐他汀对股骨髁骨小梁的影响。 目的：进一步研究骨质疏松大鼠股骨内局部注射辛伐他汀对股骨髁骨小梁的影响。为将辛伐他汀应用于临床骨质疏松局部治疗提供实验基础。 方法：18只雌性SD大鼠双侧卵巢切除后3个月,制备大鼠骨质疏松模型。实验大鼠随机数字表法均分为3组,分别在实验大鼠的右侧股骨髓腔内单次注射辛伐他汀溶液5 mg、10 mg,对照组单纯注射空白载体。分别在注射后1个月处死大鼠并取材。Micro-CT扫描并定量分析骨组织形态变化。 结果与结论：给药后1个月,Micro-CT扫描结果显示,辛伐他汀治疗组的骨微结构参数如骨皮质厚度、骨小梁密度及连接率明显优于对照组。说明疏松骨骼单次注射小剂量辛伐他汀可显著促进股骨髁部骨小梁改建,改善骨骼微结构,可为强化局部、防治骨质疏松骨折的新选择进一步提供实验基础。