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1.
Background The concentration of serum fructosamine is correlated with plasma glucose level. The aim of this study was to determine whether the level of serum fructosamine can be diagnostic for abnormal glucose tolerance in pregnant women.Methods Serum samples were collected from 161 pregnant women between November 2004 and April 2005. The women were divided into three groups according to the gestational age (16-20 weeks group, 56 patients; 28-34 weeks group, 72; and 37-41 weeks group, 33). Each group was subdivided into normal and abnormal glucose tolerance subgroups. The levels of serum fructosamine were measured. Differences among the groups were assessed by ANOVA and Student-Newman-Keuls test. Correlations between the level of fructosamine and other variables including the results of glucose challenge test (GCT), oral glucose tolerance test (OGTT), and glycosylated hemoglobin (HbA1c) test, and infant’s birth weight were analyzed by Pearson correlation.Results The level of serum fructosamine decreased with gestational age [(223.25±48.90) µmol/L, (98.44±29.57) µmol/L, and (53.99±29.94) µmol/L, respectively. P<0.05]. It was higher in women with abnormal glucose tolerance than that in women with normal glucose tolerance, however, the difference reached statistical significance only in the 28-34 weeks group (P<0.05). In this group, the level of serum fructosamine correlated positively with the GCT result (r=0.28, P<0.05). No correlation was found between fructosamine level and OGTT result, HbA1c level, or neonatal weight.Conclusions Fructosamine can be used to monitor the glucose level of pregnant women with abnormal glucose tolerance, and to identify the patients at high risk of abnormal glucose tolerance, but can not be used to predict gestational diabetes mellitus (GDM) in early stage of pregnancy. 相似文献
2.
鲨鱼软骨粉(SCP)合剂诱导的抗血吸虫性肝纤维化效应机制的研究 总被引:2,自引:0,他引:2
The levels
of hyaluronic acid (HA) and laminin (LN) were detected by radioimmunoassay (RIA) and ELISA
respectively probe the mechanism of anti-schistosome egg granuloma and anti-hepatic
fibrosis induced by shark cartilage powder (SCP) combining reagent in murine
schistosomiasis. Serum HA and LN levels were measured in BALB/c mice with schistosomiasis
3 weeks after orally administering SCP combining reagent (7 weeks after infection).The
mean serum HA levels in the group with larger dosage of SCP combining reagent (group I)
(0.54±0.16mg/L), smaller dosage of SCP combining reagent (group II) (0.91±0.30mg/L ) and
single SCP (group III) (1.77±0.29mg/L) were significantly lower than that in the group of
sinlge “425” (group IV,2.14±1.22mg/L) and in the infection controls (group V,2.65±0.76mg/L),
and the serum HA level in group I was significantly lower than that in group II and IV
(P<0.01).But the serum HA level in group IV didn't differ from that in the control
group V (P>0.05). The serum LN levels (OD value) in the above mentioned groups from I
to V were 0.70±0.04, 0.84±0.05, 1.05±0.05, 0.84±0.04 and 1.58±0.10 respectively, and
a significant difference in the mean serum LN levels in group I to IV was showed in
comparison with the level in group V (P<0.01). But no significant difference was
observed among the group from I to IV (P>0.05). The results suggest that the SCP
combining reagent can decrease the levels of serum HA and LN in host infected with
Schistosoma japonicum. The results indicate that the mechanisms of anti-hepatic fibrosis
effects induced by SCP combining reagent is associated with inhibition of HA and LN
secretion. 相似文献
3.
Effect of glucocorticoid treatment on insulin like growth factor-Ⅰ and its binding proteins in children with nephrotic syndrome 总被引:4,自引:0,他引:4
Objective To identify the changes in serum insulin like growth factor-Ⅰ (IGF-Ⅰ) and IGF binding proteins (IGFBPs) in children with nephrotic syndrome (NS) and the effect of glucocorticoid on serum IGF-Ⅰ and IGFBPs. Methods We measured serum IGF-Ⅰ and IGFBPs levels by radioimmune assay and immune radiomagnetic assay in 36 children with NS, consisting of an active stage group (ANS, n=12), a remission stage group (RE, n=12), an active stage group with glucocorticoid treatment (GNS, n=12), and a normal control group (NC, n=10). Results 1) Compared to NC, serum levels of IGF-Ⅰ and IGFBP-3 were decreased (P<0.01); serum levels of IGFBP-1 and IGFBP-2 were increased (P<0.01) in the ANS group. 2) Serum levels of IGF-Ⅰ and IGFBP-3 were higher and IGFBP-1 and IGFBP-2 were lower in the RE Group than in theANS Group (P<0.01). 3) Compared to the ANS group, serum levels of IGF-Ⅰ and IGFBP-3 were increased (P<0.01) and serum levels of IGFBP-1 and IGFBP-2 were decreased (P<0.01) in the GNS group. 4) A correlation was found between serum levels of IGFBP-3 and albumin in the active stage group (r=0.76 P<0.01). There was also a correlation between serum levels of IGF-Ⅰ and IGFBP-3 and an inverse correlation between the serum level of IGF-Ⅰ and serum levels of IGFBP-1 and IGFBP-2 in the ANS group. No other correlations were observed.Conclusions The serum levels of IGF-Ⅰ and IGFBPs are altered in children in the active stage of NS, but return to normal in the remission stage. GC treatment may influence serum IGF-Ⅰ and IGFBPs in children with NS. Changes in IGF-Ⅰ and IGFBPs levels may play a role in the growth retardation of NS children. 相似文献
4.
Levels of soluble adhesion molecules in patients with various clinical presentations of coronary atherosclerosis 总被引:7,自引:0,他引:7
Background Adhesion molecules play an important role in the development and progression of coronary atherosclerosis. The aim of this study was to compare concentrations of soluble forms of adhesion molecules in patients with different clinical presentations of coronary artery disease (CAD).Methods One hundred and twenty-eight patients with CAD were divided into three groups; the first group was acute myocardial infarction group (AMI group, n=45), the second group was unstable angina pectoris group (UAP group, n=48),the third group was stable angina pectoris group (SAP group, n=35). We compared them with patients with normal coronary arteries (control group, n=31). The serum levels of vascular cell adhesion molecule (VCAM-1), intercellular adhesion molecule-1 (ICAM-1), E-selectin and P-selectin were measured in all subjects.Results The serum level of VCAM-1 in the AMI group was significantly higher than in the UAP, SAP and control groups (P 〈0.01). The level in the UAP group was significantly higher than the SAP group and control group (P 〈0.01) and the level in the SAP group was significantly higher than in the control group (P 〈0.01). The serum ICAM-1 level was significantly elevated in the AMI, UAP and SAP groups as compared to the control group (P 〈0.01). The levels of serum E-selectin and P-selectin in the AMI and UAP groups were significantly higher than in the SAP and control groups (P〈0.01).Conclusions Increased levels of VCAM-1 and ICAM-1, E-selectin and P-selectin, as markers of inflammation, showed the importance of inflammatory processes in the development of atherosclerosis and clinical expression of CAD. Soluble ICAM-1, VCAM-1, E-selectin and P-selectin concentrations are useful indicators of the presence of atherosclerosis and the severity of CAD clinical presentation. 相似文献
5.
Summary:To study the expression of placental isoferritin(PLF)in placental tissue of pregnancy-in-duced hypertension(PIH)and the relationship between the level of expression of PLF and theamount of vascular cell adhesion molecule-1(VCAM-1)in serum,immunohistochemical techniquewas used to detect the expression of PLF in placenta tissue in 45 PIH patients(PIH group)and 15normal pregnant women(normal group).High resolution pathological image analysis system(HPIAS-100)was employed to determine the quantity of PLF.The VCAM-1 in serum was exam-ined by enzyme linked immunoabsorbent assay(ELISA).The results showed that the levels of PLFexpressions in moderate and severe PIH patients were significantly lower than that of normal group(P<0.01).The serum VCAM-1 was significantly decreased in PIH group(1310±177ρ/mg/ml)than that of normal group(609±72ρ/ng/ml,P<0.01).The significant negative correlation exist-ed betweene the expression of PLF in placental tissue and the serum VACM-1(r=0.58,P<0.01).It was concluded 相似文献
6.
Background Adiponectin, secreted by adipocytes, has been found to be associated with diabetes, obesity and some cardiovascular diseases. Obstructive sleep apnea hypopnea syndrome (OSAHS) is also closely related to obesity and easily complicated with diabetes and some cardiovascular diseases. This study was carried out to explore the change of serum adiponectin level in patients with OSAHS.Methods Polysomnography was performed in 71 patients with OSAHS (OSAHS group) and 26 simple obese controls (control group). The two groups had no significant difference in age and body mass index (BMI). Radioimmunoassy was used to test serum adiponectin level.Results Serum adiponectin level was significantly lower in OSAHS group [(5.03±1.01) mg/L] than that in the control group [(7.09±1.29) mg/L, P<0.05]. The differences between two groups were independent of gender. In OSAHS groups, serum adiponectin levels were negatively correlated with apnea hypopnea index (AHI) (r=-0.78, P<0.01), BMI (r=-0.13, P<0.05), waist circumsference (r=-0.36, P<0.01), and neck circumference (r=-0.42, P<0.01), but positively correlated with the minimal pulse oxyhemoglobin saturation (r=0.48, P<0.01). Conclusion OSAHS may contribute to the decrease of serum adiponectin level independent of obesity. 相似文献
7.
52 cases with severe pre-eclampsia were studied prospectivelyfor the probable relationship between zinc metabolism and pregnancy-induced hypertension. Zinc level of maternal blood in the study group was significantly lower than that in the non-hypertensive control group (P<0.01). A positive correlation was found btween zinc level in cord blood and newborn's weight. The lower the maternal plasma zinc concentration is, the earlier the development of the disease (r=0.76, P<0.001); the larger the amount of protein in urine and the lower the zinc level in the cord blood of their fetuses will be. The disease would affect maternal zinc level and improvement of maternal zinc status might benefit the augmentation of zinc levels in the fetuses. It is only when the exhaustion status of zinc to some degree that the growth of the fetus would be involved. 相似文献
8.
9.
Relations of intracranial pressure, creatine kinase and brainstem auditory evoked potential in patients with traumatic brain edema. 总被引:3,自引:0,他引:3
We studied the relations of intracranial pressure (ICP),creatine kinase (CK) and bralnstem auditory evoked potential (BAEP) in 44 patients with traumatic brain edema who were admitted to our hospital from June 1990 to February 1991. There were 30 males and 14 females, with age range from 9 to 67 years. The results showed that the abnormal BAEP could reflect the severity of cerebral edema in acute head injury and was related to ICP and serum CK levels. When ICP>30 mmHg (4kPa), the abnormality of BAEP was more obvious than that of the control group (P<0.05); the serum CK levels were also elevated markedly. In patients with ICP over and below 4kPa, the rate of abnormal BAEP was 38.46% and 77.78% respectively (P<0.05). The serum CK level in the normal group or in the group with moderate abnormality of BAEP was significantly different from that in the group with severe abnormality or lack of BAEP (274.8± 98.24 U/L vs 705.3± 364.27 U/L; P<0.001). After treatment, the ICP returned to normal, and the BAEP norm 相似文献
10.
Changes in plasma atrial natriuretic peptide(ANP)and serum lipids were observed us-ing dietetic atherosclerosis(AS)models.The results showed that plasma ANP level of the ASgroup was significantly higher than that of the control group(14.33±3.58μg/L vs 9.43±3.14μg/L).There was also a marked increase in serum Tch,TG,LDL-ch and VLDL-ch comparedwith the control group(P<0.01),suggesting that release of ANP increased with disturbance ofthe serum lipids and during AS formation,and that change in ANP was closely related to Tchand LDL-ch(P<0.05).Possible mechanisms causing these changes are also discussed. 相似文献
11.
目的 :动态观测早产儿骨转化生化标志物血骨钙素 (OC)、碱性磷酸酶 (AKP)、 型胶原羧基端肽(ICTP)的变化及早期补钙对它们及血钙 (Ca)、尿 Ca、血磷 (P)、尿 P的影响。方法 :对 4 0例早产儿分补钙组 (2 0例 ,出生早期给予 10 %葡萄糖酸钙 4 ml/ kg.d-1静脉输注 )与对照组 (2 0例 ) ,在出生 2 4 h及 11日龄 ,分别用 EL ISA法、放射免疫法及全自动生化分析仪测定血清 OC、ICTP、Ca、P、AKP浓度和尿 Ca、P及肌酐值。同时以 2 2例正常足月儿和早产儿对照。结果 :出生 2 4 h,早产儿血 AKP、ICTP分别为 (2 14 .35± 6 7.0 6 ) IU、(6 2 .88± 4 .0 7)μg/ L高于足月儿 [(14 7.86± 4 4.87) IU、(5 7.36± 6 .34)μg/ L ,P<0 .0 1];ICTP与胎龄及出生体重呈负相关 (r=- 0 .5 2 8、- 0 .6 14 ,P<0 .0 1) ;OC为 (6 48.77± 2 38.89) nmol/ L低于足月儿 [(85 1.6 8± 2 38.6 9) nmol/ L ,P<0 .0 1],而且与胎龄、出生体重呈正相关 (r=0 .35 9、0 .376 ,P<0 .0 5、<0 .0 1)。出生 11日龄 ,早产儿对照组 OC为 (94 7.2 5± 335 .4 7)nmol/ L,高达足月儿 [(94 1.6 5± 2 97.2 8) nmol/ L],而 ICTP[(6 5 .4 4± 6 .2 4 ) μg/ L]始终高于足月儿 [(5 7.10± 3.4 8)μg/ L];补钙组 OC及 ICTP分别为 (84 4.5 9± 2 6 7.2 4 ) 相似文献
12.
细胞间粘附分子-1和碱性成纤维细胞生长因子在脑梗死中的作用 总被引:2,自引:0,他引:2
目的了解脑梗死急性期血清可溶性细胞间粘附分子-1(sICAM-1)和碱性成纤维细胞生长因子(bFGF)的含量变化,以及在脑梗死发生发展过程中的作用.方法采用酶联免疫吸附法(ELISA) 检测55例急性期脑梗死患者和32例其他疾病对照组及30例正常健康人为对照组,测量血清sICAM-1和bFGF 含量.结果 (1)脑梗死患者血清sICAM-1和bFGF含量分别为766.2 μg/L±178.8 μg/L和17.4 μg/L±8.2 μg/L,较其他疾病对照组分别529.6 μg/±76.7 μg/L和8.3 μg/L±2.8 μg/L,正常健康对照组分别520.7 μg/±115.9 μg/L和5.8 μg/L±2.7 μg/L,差异有显著意义(P=0.000).(2)相关分析脑梗死时血清sICAM-1含量与bFGF含量呈正相关(r=0.471,P=0.000),与外周血白细胞数呈正相关(r=0.285,P=0.035),与神经功能缺损评分呈负相关(r=-0.333,P=0.013),而与血脂水平无明显相关关系(胆固醇r=-0.042,P=0.758;甘油三脂r=0.061,P=0.657).(3)脑梗死患者血清sICAM-1和bFGF含量与高血压史关系不密切.而bFGF含量与病灶大小有关.结论 ICAM-1和bFGF可能通过炎症机制参与了脑梗死的病理生理过程;急性期监测血清sICAM-1和bFGF含量变化有助于判断病情轻重和病灶大小. 相似文献
13.
无生长追赶出生低体重幼鼠生长激素/胰岛素样生长因子1轴抵抗与胰岛素抵抗的相关研究 总被引:1,自引:0,他引:1
目的探讨生后无生长追赶的出生低体重(NCU—SGA)幼鼠的胰岛素抵抗对生长激素(GH)抵抗的影响及其受体后信号转导机制。方法以母鼠孕期限制饮食法建立雄性NCU.SGA模型研究:(1)GH和胰岛素抵抗的关系:测定4周龄时24h尿GH排泄率(24hU—GH),血胰岛素样生长因子(IGF)-1、空腹胰岛素(FINS)、血糖以及肝组织IGF-1mRNA和STATS信号表达;(2)胰岛素抵抗对生长轴的影响:3周龄时注射P13K阻断剂1周后(设溶剂对照组),测定大鼠体格生长,血IGF-1、FINS水平及肝IGF-1mRNA和STATS信号表达。结果(1)NCU—SGA鼠血清IGF-1浓度、肝IGF-1mRNA表达以及磷酸化与总STAT蛋白表达水平的比率均显著低于健康对照组(C组),分别为(248±58)ng/ml,(6.1±0.3)拷贝和(61±22)%;C组为(383±62)ng/ml,(6.6±0.4)拷贝和(91±29)%(均P〈0.01);NCU—SGA组与C组的24hU-GH差异无统计学意义(P〉0.05);NCU—SGA组FINS及空腹血糖为(24.7±9.6)mU/ml和(5.4±0.3)mmol/L显著高于C组的(9.8±2.8)mmol/L和(4.5±1.7)mmol/L(均P〈0.05)。24hU—GH与FINS显著正相关(r=0.680,P=0.000)。(2)PBK阻断后NCU.SGA鼠胰岛素抵抗加重,体重下降,血清IGF-1及肝IGF-1mRNA为(218±60)ng/ml及(6.1±0.3)拷贝,显著低于溶剂对照组的(286±45)ng/ml及(6.3±0.3)拷贝,均P〈0.05。但两组间肝组织总的及磷酸化STATS信号表达水平差异无统计学意义。结论NCU—SGA幼鼠的胰岛素抵抗与GH抵抗密切相关。生后无追赶与GH受体后JAK2-STATS通路受损所致的GH抵抗有关。胰岛素抵抗可能经非STATS依赖途径加重了GH抵抗及生长障碍。 相似文献
14.
目的 探讨老年2型糖尿病患者骨密度变化及其与胰岛素样生长因子-1(IGF-1)、性激素及各种骨转换因子的相关关系. 方法采用单能定量CT(QCT)对53例2型糖尿病(T2DM)患者及40 例健康老年人进行脊柱骨密度(BMD)测定,并分析受试者的骨密度与体重指数(BMI)、腰臀比(WHR)、IGF-1、性激素、骨钙素(BGP)、骨特异性碱性磷酸酶(B-ALP)、抗酒石酸酸性磷酸酶-5b(TRACP-5b)等指标间的关系. 结果①老年2型糖尿病患者脊柱总BMD低于对照组[(74.75±22.70) mg/cc vs(88.04±28.29) mg/cc,P<0.05].T2DM组血清IGF-1水平低于对照组[(27.63±5.74) ng/mL vs (32.51±9.68) ng/mL, P<0.05].②相关性研究显示,T2DM组IGF-1水平与B-ALP呈正相关(r=0.46, P<0.01),两组受试者IGF-1水平与所测部位BMD均无相关. 结论老年2型糖尿病患者存在不同程度骨密度下降;IGF-1水平与骨密度的变化无相关性. 相似文献
15.
白细胞介素1受体拮抗蛋白间接体内转基因抑制骨关节炎软骨破坏 总被引:1,自引:1,他引:0
目的通过白细胞介素1受体拮抗蛋白(IL-1Ra)间接体内转基因治疗实验性兔骨关节炎,探讨IL-1Ra对关节软骨病理改变及软骨基质降解的抑制作用.方法将30只新西兰大白兔随机分成3组,每组10只.对3组兔的左膝关节行部分滑膜切除,从中分离并培养滑膜成纤维细胞;3组兔的右膝关节行前交叉韧带横断术(ACLT)建立骨关节炎模型.把自体滑膜细胞回输第1组兔右膝关节腔内;把转染标记基因的自体滑膜细胞回输到第2组兔右膝关节腔内;把转染IL-1Ra基因的自体滑膜细胞回输到第3组兔右膝关节腔内.在各组滑膜细胞回输后的第2、4周,用ELISA方法分别检测关节液中IL-1Ra水平,用二甲基亚甲蓝法测定关节液及软骨中硫酸葡糖氨基聚糖(GAG)水平,各组软骨行组织染色、病理分级.结果在基因转入关节腔后,第3组兔右膝关节液中IL-1Ra水平在第2周时为(20.6±1.8) ng/ml,第4周时为(4.8±0.5) ng/ml;而第1、2组 IL-1Ra水平2、4周时均较低.第3组关节软骨降解明显被抑制,关节液中GAG含量为40.1 μg/ml,抑制率为56.2%,第2组关节液中GAG含量为84.5 μg/ml.然而第3组软骨中GAG含量比第2组高2倍,分别为30.2 μg/mg和10.8 μg/mg.第3组骨关节炎病理改变明显受到抑制.结论关节腔内注入体外转染IL-1Ra基因的自体滑膜细胞,能使关节腔局部IL-1Ra水平明显升高,使关节软骨病理改变及软骨基质降解受到抑制. 相似文献
16.
1,25双羟维生素D3及转化生长因子β1对人胚成骨细胞增殖和分化的影响 总被引:1,自引:0,他引:1
目的 研究 1,2 5双羟维生素D3 [1,2 5 (OH) 2 VD3 ]及人转化生长因子 β1(hTGF β1)对人胚成骨细胞增殖和分化的影响。方法 体外培养人胚成骨细胞 ,经 1,2 5 (OH) 2 VD3 及hTGF β1作用后 ,通过四唑盐 (MTT)比色法观察细胞增殖 ;检测细胞培养液中碱性磷酸酶 (ALP)活性及骨钙素 (OC)含量 ;逆转录 聚合酶链反应 (RT PCR)方法观察细胞中TGF β信号传导关键蛋白 SMAD蛋白mRNA水平的变化。结果 MTT比色发现 1,2 5 (OH) 2 VD3 组的吸光度值 (OD值 )较对照组下降 30 6 % (0 0 86±0 0 2 2比 0 12 4± 0 0 31,P <0 0 5 )。细胞培养液中ALP活性在 1,2 5 (OH) 2 VD3 组、hTGF β1组以及二者联合应用组均有显著增高 ,为对照组的 1 3~ 2 0倍 (P <0 0 5 )。其中 ,当hTGF β1浓度为 1× 10 -6g/L时 ,1,2 5 (OH) 2 VD3 及hTGF β1对人胚成骨细胞ALP的分泌存在协同刺激作用。 1,2 5 (OH) 2 VD3 与 1×10 -6g/L和 1× 10 -5g/L浓度的hTGF β1合用使得细胞培养液中OC水平增加 (P <0 0 5 ) ,但未发现二者的协同作用。当 1,2 5 (OH) 2 VD3 与 1× 10 -6g/L的hTGF β1合用时SMAD3mRNA水平达高峰 ,约为对照组的 6倍。结论 1,2 5 (OH) 2 VD3 抑制人胚成骨细胞增殖 ,促进其分化。 1,2 5 (OH) 2 VD3 及hTGF β1 相似文献
17.
DIAGNOSTIC VALUE OF SERUM INSULIN—LIKE GROWTH FACTOR BINDING PROTEIN—3 IN CHILDREN WITH OR WITHOUT GROWTH HORMONE DEFICIENCY 总被引:3,自引:0,他引:3
Conventionally,thediagnosisofgrowthhormonedeficiency(GHD)requiresatleasttwogrowthhormone(GH)stimulationtestswithinsulin,arginine,orlev-odopaandsoon.Thesetestsareverycomplicated,andeachtestneedsfivebloodsamplestakenatdifferenttimeandtheresultsare 相似文献
18.
曲美他嗪对家兔心肌缺血再灌注损伤的保护作用 总被引:2,自引:0,他引:2
目的 :探讨曲美他嗪对家兔心肌缺血再灌注损伤的保护作用。方法 :家兔 4 0只 ,随机分为正常对照组、缺血对照组、缺血药物干预组、再灌注对照组、再灌注药物干预组。观察缺血 30 min和再灌注 30 min对血清肌酸磷酸激酶 (CPK)、丙二醛 (MDA)、超氧化物歧化酶 (SOD)的影响 ,心肌三磷酸腺苷 (ATP)含量 ,以及心肌电镜学改变。结果 :1缺血药物干预组与缺血对照组比较 ,除血清 MDA差异有显著性外 [(4 .0 9± 0 .4 0 vs4 .79± 0 .92 ) nmol/ ml,P<0 .0 1],血清 CPK[(132 2± 114 8vs14 98± 190 ) NU/ ml]、SOD[(32 4± 71vs2 88± 5 4) NU/ ml]差异均无显著性(P>0 .0 5 )。 2再灌注药物干预组与再灌注对照组比较 ,血清 CPK[(15 12± 2 2 6 vs190 4± 2 0 3) NU/ ml]、MDA[(6 .0 9± 0 .6 9vs7.4 3± 0 .2 0 ) nmol/ ml]、SOD[(2 13± 71vs119± 5 5 ) NU/ ml],及缺血区心肌 ATP含量 [(1.4 0 1± 0 .2 4 8vs0 .6 2 9± 0 .175 ) μmol/ g]差异均有显著性 (P<0 .0 0 1~ 0 .0 1)。 3电镜显示 :各药物干预组线粒体结构改变分别较各对照组减轻。结论 :曲美他嗪具有改善缺血再灌注损伤心肌线粒体的代谢和清除氧自由基的功能。 相似文献
19.
The role of serum leptin and tumor necrosis factor-α in malnutrition of male chronic obstructive pulmonary disease patients 总被引:11,自引:1,他引:10
Background Leptin is a protein mainly secreted by adipocytes, and the major function of leptin was its role in body weight regulation. It is suggested that increased levels of circulating leptin may contribute to anorexia in pathologic conditions including chronic obstructive pulmonary disease (COPD). Recent studies have provided evidence for a link between leptin and proinflammatory cytokines such as tumor necrosis factor-α (TNF-α). This study aimed to explore the role of serum leptin in the malnutrition of COPD patients, and to observe the changes of serum leptin levels during acute exacerbation, also to investigate relationship between leptin and TNF-α. Methods Seventy-two COPD patients and 34 control subjects participated in this study. Seventy-two COPD patients were divided into 3 groups: group COPD IA (patients without malnutrition during acute exacerbation, n=25), group COPD IB (patients without malnutrition during stable disease, n=29), group COPD II (patients with malnutrition during stable disease, n=18). To eliminate the effect of sex differences, all patients and controls were male. Body mass index (BMI), percent ideal body weight (IBW%), triceps skin-fold thickness (TSF), mid-upper arm circumference (MAC), mid-upper arm muscle circumference (MAMC), serum leptin and TNF-α levels, serum prealbumin (PA), serum transferrin (TF), serum albumin (Alb), total lymphocytes count (TLC), forced expiratory volume in one second (FEV(1)), maximal inspiration pressure (MIP) and maximal expiration pressure (MEP) were measured in all participants. Leptin levels were measured by radioimmunoassay. TNF-α levels were measured by ELISA. The between group difference and correlation of these parameters were analyzed. Results Serum leptin levels were significantly lower in group COPD II [(4.07±3.42) ng/ml] than in group COPD IB [(9.72±6.67) ng/ml] and controls [(8.21±5.41) ng/ml] (P<0.05). There was no statistically significant difference in serum leptin levels between group COPD IA [(10.82±6.40) ng/ml], group COPD IB [(9.72±6.67) ng/ml] and controls [(8.21±5.41) ng/ml]. There was no statistically significant difference in serum TNF-α levels between group COPD II [(8.03±3.37) pg/ml], group COPD IA [(8.90±1.60) pg/ml], and group COPD IB [(7.25±2.08) pg/ml]. There was no significant correlation between leptin and TNF-α in any group. Conclusions Leptin was not involved in anorexia and weight loss of COPD patients. There was no statistically significant difference in serum leptin levels between COPD patients during stable stage and acute exacerbation, and there was no significant correlation between TNF-α and leptin during the regulation of the energy balance in COPD patients. 相似文献
20.
晚期糖基化终产物刺激内皮细胞分泌单核细胞趋化蛋白-1信号传导途径 总被引:17,自引:1,他引:16
目的 研究晚期糖基化终产物 (AGE)修饰蛋白对人内皮细胞分泌单核细胞趋化蛋白 1(MCP 1)的影响及其作用的信号传导途径。方法 将培养的人脐静脉内皮细胞 (HUVEC)和人内皮细胞株ECV30 4与不同浓度AGE修饰的人血清白蛋白 (AGE HSA)或牛血清白蛋白 (AGE BSA)共同培养。用Western印迹及酶联免疫吸附法 (ELISA)检测MCP 1蛋白合成及分泌 ,用逆转录PCR(RT PCR)法检测MCP 1mRNA表达 ,用流式细胞术观察细胞内氧化应激 ,用免疫沉淀 激酶活性测定法分析细胞p38丝裂素活化蛋白激酶 (p38 MAPK)活性。结果 AGE HSA和AGE BSA以时间和剂量依赖的方式上调内皮细胞MCP 1mRNA和蛋白的表达并诱导细胞氧化应激和活化p38 MAPK。 5 0 μg/mlAGE HSA与HUVEC共同培养 12h ,使细胞上清中的MCP 1浓度由 4 8 3pg/μg± 0 6pg/μg蛋白上升至 14 8 1pg/μg± 12 6pg/μg蛋白 (P <0 0 1)。5 0 μg/mlAGE HSA与HUVEC共同孵育 30min ,使p38 MAPK的磷酸化活性升高 91%± 14 % (P <0 0 1)。抗氧化剂或p38通路特异阻断剂SB 2 0 35 80能够阻断AGE修饰蛋白诱导的MCP 1表达。结论 AGE修饰蛋白能够通过p38 MAPK信号传导途径上调内皮细胞分泌MCP 1,这一作用是经氧化应激机制介导。 相似文献