8-甲氧补骨脂素和长波紫外线在细胞光老化中对端粒缩短机制的影响

Objective To investigate the mechanism of telomere shortening through 8-methoxypsoralen(8-MOP)and subsequent ultraviolet A(UVA)irradiation-induced photoaging model in human dermal fibroblasts(HDFs).Methotis Photoaging model was established by 8-MOP+UVA in skin HDFs.Flow cytometer.enzyme eytochemistry,immunofluorescence,Westem blot and Real-time PCR were employed.Results The percentage of G1 blockage of 8-MOP+UVA group were higher than that of control group at 24、48、72 h and 7 d(61.4%±1.5% vs 32.8%±1.5%.69.5%±2.2% vs 44.9% ±2.3%.88.2%±1.6% vs 59.8%±1.4%,90.7%±2.5% vs 68.5%±2.6%.all P＜0.01).The expression of SA-β-Gal of 8-MOP+UVA group were higher than that of control group at 24、48、72 h and 7 d(34.87%±0.59% vs 7.11%±0.78%,59.38%±0.46% vs 10.57%±0.47%.72.46%±0.98% vs 11.67%±0.87%,94.33%±0.13% vs 12.04%±0.12%,all P＜0.01).8-MOP+UVA treatment could significantly aggravate the oxidative DNA damages,the percentage of 8-oxo-dG positive cell of 8-MOP+UVA group(95.78%±0.14%)were significantly higher than that of control group(7.69%±0.09%,P＜0.01),8-MOP group(9.76%±0.11%,P＜0.01)and UVA group(35.29%±0.14%,P＜0.05).8-MOP+UVA treatment could accelerate the telomere shortening.the relative length of telomere of 8-MOP +UVA group were 2.57±0.05 lower than that of control group(6.63±0.12.P＜0.01).The levels of P53,P21WAF-1 and P16INK-4a of 8-MOP+UVA group were higher than that of control group(3.00±0.88 vs 0.54±0.10,2.50±0.51 vs 0.42±0.06,2.21±0.34 vs 0.38±0.05,all P＜0.01).Conclusion 8-MOP+UVA-induced photoaging of HDFs can be mediated though the regulation of telomere and subsequent P53-dependent signaling pathways.     

热化疗对人体结肠癌LoVo细胞中一氧化氮含量的影响

Aim To study the effect of nitric oxide (NO) on LoVo cells after hyperthermia combined with MMC and their mechanisms. Methods The levels of NO were determined in cell culture medium of LoVo cells by Cu-Cd reduction method.Results The levels of NO in control (45.9±16.12) μmol/L group were lower than those in chemohyperthermy(92.3±24.30) μmol/L and hyperthermia (67.67±15.48)μmol/L group (P＜0.01,P＜0.05 respectively). Levels of NO in chemohyperthermy and hyperthermia groups were higher than those in chemotherapy(47.03±16.32)μmol/L(P＜0.01,P＜0.05 respcevtively). The levels of NO in chemo-hyperthermy group were higher than those in hyperthermia group(P＜0.05), and those in chemotherapy group higher than in control group but without statistical significance.Conclusion Chemohyperthermy and hyperthermia could remarkably enhance the levels of NO produced by LoVo cells. NO levels could also be enhanced by chemotherapy. It could be concluded that Nitric Oxide Synthase (NOS) in tumor cells might be activated by hyperthermia, chemohyperthermy and chemotherapy, and increased NO level which induced cytotoxic reaction. This may be one of the mechanisms of treatment with chemohyperthermy.     

Efficacy of recombinant tissue-type plasminogen activator thrombolysis and primary coronary stenting after acute myocardial infarction

Objective To compare the efficacy of low dose recombin ant tissue-type plasminogen activator (rt-PA) thrombolysis with primary corona ry stenting after acute myocardial infarction. Methods Of 261 patients with first acute myocardial i nfarction, 131 were given low dose rt-PA intravenous thrombolysis, and 130 primary coronary stenting. Results The age, time from onset of chest pain to hosp ital presentation and infarct location between these two groups were comparable . The patency rate of the infarct-related artery (IRA) in patients in the thro mbolysis group was significantly lower than that of patients in the primary sten ting group (P<0.001). Recurrent myocardial infarction, and selective coron ary stenting of patients with thrombolytic therapy were higher than that of pat ients in the primary stenting group (7.6% vs 1.5%, P<0.05; 20.6% vs 0, P<0.001, respectively). Left ventricular ejection fraction (LVEF) in patie nts in the thrombolysis group was lower than that of the stent group (55.6%±13 .4% vs 65.8%±9.2%, P<0.001). Total hospitalization time of the thrombo lysis group was longer than that of the stent group （16±7 d vs 11±4 d, P <0.001). Mortality in the thrombolysis group was higher than that of the stent group, but this difference was not significant （6.1% vs 3.1%,P>0 .05） Conclusion Comparing with low dose rt-PA thrombolytic therapy after acute myocardial infarction, primary coronary stenting has a highe r patency rate of the IRA, better cardiac function and shorter hospitalization time.     

Effects of angiotensin Ⅱ receptor antagonist on expression of collagen Ⅲ, collagen Ⅴ, and transforming growth factor β1 in the airway walls of sensitized rats

Background Repeated attacks of bronchial asthma lead to different degrees of airway remodeling, the mechanism of which is not yet clear. Some evidences indicate that it is related to the excessive expression of some growth promotion factors. Angiotensin Ⅱ is a polypeptide that may be involved in airway remodeling. To evaluate its role in airway remodeling in asthma, we observed the effects of an angiotensin Ⅱ type 1 receptor antagonist (valsartan) on the expression of collagen Ⅲ, collagen Ⅴ, and transforming growth factor β1 (TGF-β1) mRNA and protein in the airway walls of sensitized rats.Methods Forty Wistar rats were randomly divided into 5 groups: control group, sensitized group, and valsartan groups 1, 2, and 3. The rats in the sensitized group and in valsartan groups 1, 2, and 3 were sensitized and challenged with ovalbumin. Rats in control group were sensitized and challenged with 0.9% NaCl. Rats from valsartan groups 1, 2, and 3 were drenched with valsartan (10 μg, 20 μg, or 30 μg, respectively) at the time of the ovalbumin challenges. The expression of collagen Ⅲ, collagen Ⅴ, and TGF-β1 protein were detected using immunohistochemical method in combination with image analysis methods. The expression of TGF-β1 mRNA was detected by in situ hybridization. Results The expression in the airways of collagen Ⅲ and collagen Ⅴ was significantly higher in rats from the sensitized group (7.73±0.81, 1.34±0.28) and from valsartan groups 1, 2, and 3 (5.73±0.64, 1.13±0.15; 4.96±0.51, 0.98±0.08; 4.43±0.35, 0.93±0.06, respectively) than those in the control group (2.65±0.38, 0.67±0.08, P<0.05). In addition, collagen levels were significantly lower in valsartan groups 1, 2, and 3 than those from the sensitized group (P<0.05). The expression of TGF-β1 mRNA and protein in the airways was significantly higher in rats from the sensitized group (20.49%±3.46%, 29.73%±3.25%) and from valsartan groups 1, 2, and 3 (16.47%±1.94%, 19.41%±1.87%; 14.38%±1.58%, 18.29%±1.43%; 12.96%±1.73%, 18.63%±1.11%, respectively) than that from the control group (7.84%±1.61%, 5.63%±1.07%, P<0.05). TGF-β1 mRNA and protein levels were significantly lower in valsartan groups 1, 2, and 3 than that in the sensitized group (P<0.05). Conclusions Angiotensin Ⅱ receptor antagonist valsartan can suppress synthesis of collagen Ⅲ and collagen Ⅴ by downregulating TGF-β1 mRNA and protein expression. Valsartan can decrease airway remodeling and could play a role in asthma therapy.     

高压氧预处理对高加速度暴露大鼠学习和记忆的影响

Objective To explore the effect of hyperbaric oxygen (HBO) preconditioning on learning and memory damage induced by high positive acceleration( + Gz) exposure in rats.Methods Thirty-two male Sprague-Dawley rats were randomly divided into four groups with 8 in each group: control group( Con), + Gz group,HBO group and HBO-+ Gz group.Rats of Con group were given 5d( 1 ATA ,21% O2, 1h/d); Rats of + Gz group was exposed to + 10Gz for 5 min; HBO group were only given 5d (2.5 ATA, 100% O2,1 h/d); HBO-+ Gz group were given HBO 5 consecutive days,and then suffered +Gz exposure.Morris water maze was used to observe the navigation and probe capabilities of rats.Results In the spatial acquisition test,there exist significant difference among these groups(F(3.28) = 5.325, P＜ 0.01 ).Compared with the control group, the escape latency increased significantly in the + Gz group and HBO-+ Gz group (P＜0.05) while had no difference in HBO group.HBO-+ Gz group had significantly shorter escape latency than + Gz group (P＜0.05).In the probe test,compared with the control group, + Gz group and HBO-+ Gz group had a longer percentage in the target quadrant( (43.71 ± 3.29 ) %vs (28.65 ±1.00)%, P＜0.05;(43.71 ±3.29)% vs (37.17 ±0.98)%, P＜0.05)),and HBO-+Gz group was better than + Gz group.Conclusion HBO preconditioning may have a protective effect on the impairment of learning and memory caused by + Gz exposure in rats.     

高压氧预处理对高加速度暴露大鼠学习和记忆的影响

Objective To explore the effect of hyperbaric oxygen (HBO) preconditioning on learning and memory damage induced by high positive acceleration( + Gz) exposure in rats.Methods Thirty-two male Sprague-Dawley rats were randomly divided into four groups with 8 in each group: control group( Con), + Gz group,HBO group and HBO-+ Gz group.Rats of Con group were given 5d( 1 ATA ,21% O2, 1h/d); Rats of + Gz group was exposed to + 10Gz for 5 min; HBO group were only given 5d (2.5 ATA, 100% O2,1 h/d); HBO-+ Gz group were given HBO 5 consecutive days,and then suffered +Gz exposure.Morris water maze was used to observe the navigation and probe capabilities of rats.Results In the spatial acquisition test,there exist significant difference among these groups(F(3.28) = 5.325, P＜ 0.01 ).Compared with the control group, the escape latency increased significantly in the + Gz group and HBO-+ Gz group (P＜0.05) while had no difference in HBO group.HBO-+ Gz group had significantly shorter escape latency than + Gz group (P＜0.05).In the probe test,compared with the control group, + Gz group and HBO-+ Gz group had a longer percentage in the target quadrant( (43.71 ± 3.29 ) %vs (28.65 ±1.00)%, P＜0.05;(43.71 ±3.29)% vs (37.17 ±0.98)%, P＜0.05)),and HBO-+Gz group was better than + Gz group.Conclusion HBO preconditioning may have a protective effect on the impairment of learning and memory caused by + Gz exposure in rats.     

氧自由基在创伤性大鼠脑损伤后肠道细菌移位中的作用

Objective To investigate the effect of oxygen free radicals on intestinal mucosal barrier in traumatic brain injury rats.Methods A total of 64 health male Wistar rats were divided randomly into two groups:traumatic brain injury(TBI)(n=32);Control group with sham operation(n=32).Each group was divided into four subgroups at 6,12,24 and 48 h post-operation(n=8).The levels of malondialdehyde(MDA),superoxide dismutase(SOD) and glutathione(GSH) were measured in intestinal mucosa,mesenteric lymph nodes,liver,spleen,pancreas,lung and kidney tissue.The marked bacilli were counted under a fluorescent microscope.Results The positive rates of bacterial translocation in TBI group were obviously hisher than those of control group(6 h:8.3% vs 2.1%,12 h:25.0% vs 2.1%,24 h:27.1% vs 2.1%.48 h:12.5% vs 0.0%,P＜0.05).The levels of MDA in TBI group were obviously higher than those of control group(6 h:4.9±0.7 vs 2.6±0.3,12 h:6.1±0.8 vs 2.8±0.5,24 h:5.9±0.4 vs 2.6±0.3,48 h:5.3±0.5 vs 2.7±0.4(nmol/mg pro),P＜0.05),and GSH (6 h:287±36 vs 408±53:12 h:192±25 vs 421±46;24 h:160±48 vs 432±35;48 h:241±31 vs 394±51(mg/g pro)P＜0.05).SOD(6 h:19.5±3.3 vs 21.1±1.9;12 h:11.8±2.6 vs 20.7±5.3;24 h:13.3±3.3 vs 20±3.3:48 h:15.1±1.5 vs 21.2±3.2(U/mg pro).P＜0.05)were lower than the control group at the same time point.Conclusions Bacterial translocation occurs obviously in TBI rats.It indicates that oxygen free radicals play important roles in stress-related changes of intestinal mucosal barrier in early stage of traumatic brain injury.     

氧自由基在创伤性大鼠脑损伤后肠道细菌移位中的作用

Objective To investigate the effect of oxygen free radicals on intestinal mucosal barrier in traumatic brain injury rats.Methods A total of 64 health male Wistar rats were divided randomly into two groups:traumatic brain injury(TBI)(n=32);Control group with sham operation(n=32).Each group was divided into four subgroups at 6,12,24 and 48 h post-operation(n=8).The levels of malondialdehyde(MDA),superoxide dismutase(SOD) and glutathione(GSH) were measured in intestinal mucosa,mesenteric lymph nodes,liver,spleen,pancreas,lung and kidney tissue.The marked bacilli were counted under a fluorescent microscope.Results The positive rates of bacterial translocation in TBI group were obviously hisher than those of control group(6 h:8.3% vs 2.1%,12 h:25.0% vs 2.1%,24 h:27.1% vs 2.1%.48 h:12.5% vs 0.0%,P＜0.05).The levels of MDA in TBI group were obviously higher than those of control group(6 h:4.9±0.7 vs 2.6±0.3,12 h:6.1±0.8 vs 2.8±0.5,24 h:5.9±0.4 vs 2.6±0.3,48 h:5.3±0.5 vs 2.7±0.4(nmol/mg pro),P＜0.05),and GSH (6 h:287±36 vs 408±53:12 h:192±25 vs 421±46;24 h:160±48 vs 432±35;48 h:241±31 vs 394±51(mg/g pro)P＜0.05).SOD(6 h:19.5±3.3 vs 21.1±1.9;12 h:11.8±2.6 vs 20.7±5.3;24 h:13.3±3.3 vs 20±3.3:48 h:15.1±1.5 vs 21.2±3.2(U/mg pro).P＜0.05)were lower than the control group at the same time point.Conclusions Bacterial translocation occurs obviously in TBI rats.It indicates that oxygen free radicals play important roles in stress-related changes of intestinal mucosal barrier in early stage of traumatic brain injury.     

母鼠孕前慢性应激对成年雄性子代行为学和脑区单胺递质的影响

Objective To examine the effects of maternal rats exposed to chronic unpredictable stress before pregnancy on the behaviors and brain monamine of their adult male offspring.Methods Sixteen SD rats were divided into chronic unpredictable stress (CUS) group and controls.CUS rats were exposed to 21 days chronic unpredictable stressors ,and the controls were stress-free.Ten days after the last stressor, all the female rats were caged with sexually experienced males of the same strain.Then we performed the following experiments on the two months male progeny, sucrose consumption measuring anhedonia, Morris water maze measuring cognitive function and high performance liquid chromatography detecting the contents of monoamine.Results The sucrose consumption showed that both sucrose intake and sucrose consumption percentage of the control progeny were higher than those of the CUS progeny ( sucrose consumption: ( 10.23 ± 4.12 ) g vs ( 6.48 ± 3.19 ) g; sucrose consumption percentage: ( 85.43 ± 20.15 ) % vs (60.98 ± 24.65 ) % ) (P ＜ 0.05 ).The number of times crossing the removed hidden platform in the CUS progeny ( 1.64 ± 1.69) was significantly fewer than that in the control progeny (4.17±2.29 ) in Morris water maze (P ＜ 0.05 ).The contents of serotonin in the hypothalamus of CUS progeny ( ( 500.17 ± 80.94 ) ng/g tissue) was lower than that of the control progeny ( ( 569.63 ± 50.91 ) ng/g tissue) (P ＜0.05) ,while the norepinephrine in the hippocampus of CUS progeny( (2315.01 ± 1397.12) ng/g tissue) was higher than that of the control progeny( (907.56 ± 207.27) ng/g tissue) (P＜0.05) by high performance liquid chromatography.Conclusions Depression or stressful events before pregnancy of dams result in anhedonia, decreased spatial memory and abnormalities in brain monoamine of their adult male progeny.     

母鼠孕前慢性应激对成年雄性子代行为学和脑区单胺递质的影响

Objective To examine the effects of maternal rats exposed to chronic unpredictable stress before pregnancy on the behaviors and brain monamine of their adult male offspring.Methods Sixteen SD rats were divided into chronic unpredictable stress (CUS) group and controls.CUS rats were exposed to 21 days chronic unpredictable stressors ,and the controls were stress-free.Ten days after the last stressor, all the female rats were caged with sexually experienced males of the same strain.Then we performed the following experiments on the two months male progeny, sucrose consumption measuring anhedonia, Morris water maze measuring cognitive function and high performance liquid chromatography detecting the contents of monoamine.Results The sucrose consumption showed that both sucrose intake and sucrose consumption percentage of the control progeny were higher than those of the CUS progeny ( sucrose consumption: ( 10.23 ± 4.12 ) g vs ( 6.48 ± 3.19 ) g; sucrose consumption percentage: ( 85.43 ± 20.15 ) % vs (60.98 ± 24.65 ) % ) (P ＜ 0.05 ).The number of times crossing the removed hidden platform in the CUS progeny ( 1.64 ± 1.69) was significantly fewer than that in the control progeny (4.17±2.29 ) in Morris water maze (P ＜ 0.05 ).The contents of serotonin in the hypothalamus of CUS progeny ( ( 500.17 ± 80.94 ) ng/g tissue) was lower than that of the control progeny ( ( 569.63 ± 50.91 ) ng/g tissue) (P ＜0.05) ,while the norepinephrine in the hippocampus of CUS progeny( (2315.01 ± 1397.12) ng/g tissue) was higher than that of the control progeny( (907.56 ± 207.27) ng/g tissue) (P＜0.05) by high performance liquid chromatography.Conclusions Depression or stressful events before pregnancy of dams result in anhedonia, decreased spatial memory and abnormalities in brain monoamine of their adult male progeny.     

乌司他丁对单肺通气肺叶切除术患者动脉血TNF-α、IL-6和IL-8的影响

目的：观察乌司他丁对单肺通气（OLV）肺叶切除术时患者动脉血中肿瘤坏死因子α（TNF-α）、白细胞介素-6（IL-6）、白细胞介素-8（IL-8）的影响。方法：OLV麻醉行肺叶切除术患者20例,分乌司他丁治疗组（W组,10例）和对照组（A组,10例）。W组在OLV开始后,静脉泵注乌司他丁10000IU/kg,1h内注完;A组则予同体积的0.9%氯化钠注射液。两组分别于麻醉前（T0）、机械通气后30min（T1）、1h（T2）、2h（T3）、胸内操作结束后1h（T4）、2h（T5）、术后24h（T6）、48h（T7）采血测定TNF-α、IL-6、IL-8。结果：①TNF-α：A组在T3时开始上升,T7达峰值;W组T4开始上升,T7达峰值;A组T6、T7上升幅度明显大于W组（P〈0.05）;②IL-6：两组均在T3时开始上升（P〈0.01）,T7仍未恢复到麻醉前水平（P〈0.05）,组间比较差异无统计学意义（P〉0.05）;③IL-8：A组在T2时开始上升（P〈0.01）,T5达高峰,T6回降,T7仍未恢复到麻醉前水平（P〈0.05）;组间比较,A组在T4、T5、T6显著高于A组（P〈0.01）。结论：乌司他丁10000IU/kg可抑制OLV引起的TNF-α、IL-8升高;但不能抑制OLV引起的IL-6上升。     

白细胞介素-8在肿瘤中的作用研究现状

白细胞介素-8（Interleukin-8,IL-8）是一个多种细胞来源的趋化性细胞因子,在炎症反应、免疫应答及创伤愈合等过程中具有重要作用。近年的研究表明IL-8在多种恶性肿瘤组织中高表达,可能与肿瘤的血管生成、生长转移、复发等密切相关。本文就IL-8与肿瘤关系的最新研究成果加以综述。     

大鼠大脑皮质胆囊收缩素受体的体外结合分析法研究

用Ｂｏｌｔｏｎ－Ｈｕｎｔｅｒ试剂联结法标记胆囊收缩素（ＣＣＫ８）,得１２５Ｉ－ＢＨ－ＣＣＫ８,其比放射性为３．４ＴＢｑ／ｍｍｏｌ,放射化学纯度大于９６％。取其与自制的大鼠大脑皮质细胞膜进行受体放射分析,发现标记配体与大鼠大脑皮质ＣＣＫ受体的结合具有温度和时间依赖性,可饱和性,可逆性及特异性。经Ｓｃａｔｃｈａｒｄ分析获大鼠大脑皮质细胞膜ＣＣＫ受体Ｋｄ值为１．０９８ｎｍｏｌ／Ｌ,Ｂｍａｘ为１９７．５ｆｍｏｌ／ｍｇ蛋白。     

强直性脊柱炎患者血清与关节滑膜液IL-8、IP-10及RANTES水平测定及其临床意义

目的探讨IL-8、γ干扰素诱生蛋白10(IP-10)及活化正常T细胞表达和分泌的调节物(RANTES)与强直性脊柱炎(AS)患者病情的关系。方法采用ELISA法检测31例活动期AS患者(观察组)血清、30名健康者(对照组)血清。观察组又按临床症状分为周围型AS(13例)和中轴型AS(18例),检测周围型AS患者关节液IL-8、IP-10和RANTES的水平。结果观察组血清IL-8、IP-10和RANTES水平均高于对照组(均P<0.05)。AS患者关节滑膜液中IL-8和IP-10水平高于血清水平(P<0.05);而RANTES水平低于血清水平(P<0.05)。周围型AS患者血清IL-8水平较中轴型AS患者显著增高(P<0.01)。血清RANTES水平与Bath强直性脊柱炎活动指标(BASDAI)呈正相关(r=0.575,P<0.05)。结论IL-8血清水平可能与AS患者发病形式有关,RANTES可作为病情活动性指标。     

IL-8和解脲脲原体感染与早产关系的研究

目的测定早产产妇宫颈分泌物中IL-8的表达水平及胎盘解脲脲原体（Uu）的感染情况,探讨这些因素与早产的关系。方法ELISA法检测39例早产产妇宫颈分泌物中IL-8的表达水平,并获取胎盘标本,进行Uu分离培养,同时以47例足月产产妇作为对照组。结果早产产妇宫颈分泌物中IL-8水平显著高于正常对照组,23例产妇Uu培养阳性,而对照组仅11例阳性（P〈0.05）。结论宫颈分泌物中IL-8的高表达以及Uu感染可能与早产有关。     

Toll样受体-2对角质形成细胞分泌IL-8的影响

目的:观察白念珠菌刺激人角质形成细胞后IL-8的变化以及Toll样受体2(Toll-like receptor2,TLR-2)对IL-8分泌的影响,探讨角质形成细胞在皮肤免疫系统中的作用。方法:白念珠菌分别与抗TLR-2抗体预处理前后的角质形成细胞孵育,ELISA方法检测不同时间培养上清液IL-8的水平。结果:白念珠菌可引起IL-8明显升高(P<0.01),3h开始,至24h达到高峰;中和TLR-2受体后,虽然引起IL-8升高,但无统计学意义(P>0.05)。结论:白念珠菌可以刺激角质形成细胞分泌IL-8,TLR-2在角质形成细胞IL-8表达中的作用尚难确定。     

慢性非细菌性前列腺炎患者前列腺液TNF-α、IL-8的检测及临床意义

目的：探讨前列腺按摩液（EPS）中细胞因子白细胞介素-8（IL-8）及肿瘤坏死因子-α（TNF-α）在Ⅲ型前列腺炎[慢性非细菌性前列腺炎／慢性盆底疼痛综合征（CAP／CPPS）]诊断、分型中的意义。方法：ELISA法检测50例临床诊断为Ⅲ型前列腺炎患者EPS中IL-8及TNF-α水平。结果：慢性非细菌性前列腺炎EPS中ⅢA型组TNF-α水平与ⅢB型组、对照组比较,有显著性差异（P〈0．05）;ⅢB型组TNF-α水平与对照组比较,无显著性差异（P〉0．05）。ⅢA型组IL-8水平与ⅢB型组、对照组比较,有非常显著性差异（P〈0．01）;IUB型组与对照组比较,有非常显著性差异（P〈0．01）。所有患者EPS中TNF-α【水平与WBC计数无明显相关性（r=-0．167。P〉O．05）,IL-8水平与WBC计数的相关性分析显示呈正相关（r=0．836,P〈0．01）。结论：检测Ⅲ型前列腺炎患者EPS中IL-8及TNF-α水平可能有助于Ⅲ型前列腺炎的分型诊断,并口『作为了解病情和评价治疗效果的一个有价值的指标。     

小剂量MIP-1α联合IL-8体外对人骨髓造血细胞集落形成的影响

目的 了解小剂量巨噬细胞炎症蛋白－1α(Macrophage inflammatory protein-α MIP-1α）联合白细胞介素－8（Interleukin-8,IL-8）对人骨髓造血细胞集落形成的影响。方法 取人骨髓，根据随机单位组方差分析设计，将每例标本分为空白组（不加MIP－1α和IL－8）；10ng/ml联合组（加入10ng/ml的MIP－1α和IL－18）。建立半固体培养体系，一定时间后，观察集落粒单细胞集落形成单位（CFU－GM）、红细胞集落形成单位（CFU－E）和混合信集落（CFU－E）和混合集落（CFU－Mix）的形成情况。结果 1ng/ml的浓度下，相同浓度的MIP－1α与IL－8联合使用对人骨髓造血细胞集落的形成没有明显的抑制作用；而在10ng/ml的浓度下，两者联合使用则能明显地抑制人骨髓造血细胞集落的形成。两种因子单独使用，未见明显的集落形成抑制作用。结论 10ng/mlMIP-1α与IL－8能相互协同抑制人骨髓造血细胞集落的形成。     

川芎嗪抑制IL-8诱导人卵巢癌SKOV3细胞的迁移作用

目的:观察外源白介素-8(Interleukin-8,IL-8)对人卵巢癌SKOV3细胞迁移的影响,及川芎嗪(Tetramethylpyrazine,TMP)对它的干预作用,初步研究其可能机制.方法:TMP处理SKOV3细胞后,MTF法确定药物浓度;细胞划痕实验观察外源IL-8对SKOV3细胞迁移能力的影响,采用Tra...     

胃癌组织中p8表达的初步研究

目的 探讨胃癌组织中p8的表达情况及意义.方法 应用免疫组织化学方法检测45例胃癌组织、17例正常胃窦黏膜组织(对照组)中p8的表达情况,并分析其与胃癌患者临床特征之间的关系.结果 胃癌组织中p8蛋白的表达率明显高于对照组(97.8% vs 23.5%,P<0.05);且胃癌组织中p8表达强度也显著高于对照组(P<0.05).分化低胃腺癌组织、有淋巴结转移的胃癌组织的p8表达强度分别强于高-中分化胃腺癌组织、无淋巴结转移的胃癌组织(P<0.05).但胃癌组织中p8蛋白的表达与患者性别、年龄是否大于60岁、病变部位无明显相关(P>0.05).结论 p8可能在胃癌的发生发展中有重要作用.