锌对精子受一氧化氮损害的保护作用

目的：探讨锌对人类精子受外源性一氧化氮(NO)供体硝普钠(SNP)损伤的保护性作用．方法：利用相差显微镜及单细胞凝胶电泳分析锌对SNP影响精子运动能力、精子细胞头尾连接及精子细胞DNA链断裂的保护性．结果：SNP对精子运动能力有明显的抑制作用，精子彗星细胞百分率显增加，精子头尾连接稳定百分率降低，而锌离子能提高精子的运动功能，防止精子细胞DNA链的断裂和精子头尾连接的解离．结论：锌对NO损伤精子有一定的保护作用，其机制可能与精子核染色质部位的巯基有关，对男性不育症的治疗有重要价值．     

一氧化氮对精子膜功能完整性的影响

目的 :研究一氧化氮 (NO)对人精子膜功能完整性的影响 .方法 :采用镀铜镉还原荧光法检测NO代谢产物硝酸盐 (NO-3 ) ;伊红Y水试验检测精子膜功能完整性 .用考马斯亮蓝 (CBB)G2 5 0染色法检测顶体完整率 ,用NO供体硝普钠 (SNP)与精子共同体外作用后涂片染色 ,在显微镜下分析顶体反应率 .结果 :生育组精液NO含量 (4 0 .8± 1 .5 )nmol·L-1 ,精子膜功能完整率 :B E型和为 (6 4± 4 ) % ,精子头部未着色(73± 1 0 ) %和精子顶体完整率 (91± 6 ) % ,与不育组 (78.5±1 .6 )nmol·L-1 ,(4 4± 1 1 ) %、(5 9± 1 6 ) %和 (71± 1 0 ) %呈非常显著性差异 (P <0 .0 1 ) .NO对精子顶体反应率在低浓度为(80± 4 ) % ,中浓度为 (76± 3) % ,高浓度为 (2 5± 4 ) % .结论 :NO对精子膜功能具有两重性 ,在低浓度时有保护作用 ,而在高浓度时对精子膜有毒害损伤作用 .其机制可能是低浓度NO与活性氧迅速结合 ,减少脂质过氧化反应 ,保护了精子膜的损伤 ,高浓度NO与活性氧结合后 ,过量的NO作用于精子膜的不饱和脂肪酸 ,增加了精子膜脂质过氧化反应而损害精子膜功能     

拟炎症高NO大鼠原代培养肝细胞的信号转导途径研究

目的 :通过对信号分子 NO在原代培养大鼠肝细胞所经由的信号转导途径研究 ,探索炎症急性期肝细胞高 NO的生物学意义 ,及药物可能作用的新靶点。方法 :采用 NO供体硝普钠 (SNP)模拟肝脏急性炎症期高 NO环境 ,Griess法测定 NO的特异氧化终产物 NO2 - / NO3- 。测定肝细胞中 c GMP的浓度和肝细胞培养液中 GSNO的浓度 ,由此分别了解在原代培养大鼠肝细胞模型 ,NO经由 c GMP通路信号转导 ,还是经由非 c GMP通路信号转导的途径。结果 :1.5 4 3mmol/ L SNP释放 NO达峰值分别为 ,以 2 5 mmol/ L GSH为 NO释放通路 ,30 min时为 (0 .6 3± 0 .0 6 ) mmol/ L ;以 2 5 mmol/ L L - Cys为活性巯基通路 ,2 5 min时为 (0 .98± 0 .11) mmol/ L。 SNP与原代培养大鼠肝细胞共孵育过程中 ,随着孵育时间的延长及 SNP浓度的增高 ,细胞内 c GMP含量与对照组相比有显著性差异 (P<0 .0 5 ) ;培养液中 GSNO浓度也有增高。与对照组比均有显著差异 (P<0 .0 5 )。结论 :NO供体 SNP在含有巯基(GSH和 Cys)的肝细胞培养液中可持续释放 NO,通过 c GMP依赖性通路和 c GMP非依赖性通路—— GSNO通路进行信号转导 ,影响下游生物学效应靶点     

不同浓度Hcy对培养的人脐静脉内皮细胞NO及eNOS转录水平的影响

目的 :通过培养的人脐静脉内皮细胞 (humanum blilicalveinendothelialcell,HUVEC) ,研究不同浓度的同型半胱氨酸 (homocysteine ,Hcy)对内皮细胞分泌一氧化氮 (NO)以及对内皮源性一氧化氮合酶 (eNOS)转录水平的影响 .方法 :收集HUVEC ,然后进行细胞培养 ,传至第 3代后 ,将其与不同浓度的Hcy(生理浓度 0 .0 1mmol·L -1、病理生理浓度 0 .5mmol·L -1、非毒性药理浓度 2 .0mmol·L -1、毒性药理浓度5 .0mmol·L-1)共同培养 2 4h ,分别在 4 ,6 ,8和 2 4h检测培养液中NO的含量 .2 4h后 ,收集HUVEC ,提取总的RNA ,利用eNOS特异性引物进行逆转录 ,从而探讨Hcy对eNOSmR NA水平的影响 .结果 :HUVEC与不同浓度的Hcy培养 2 4h后 ,其NO呈现剂量依赖性的下降 (2 4h时 ,各浓度Hcy的培养液中的NO的含量分别为 19.71± 3.88μmmol·L -1,14 .0 8± 4 .4 6 μmmol·L -1,8.71± 6 .6 3μmmol·L -1,7.0 1±3.6 3μmmol·L -1,2 .37± 0 .77μmmol·L -1,P <0 .0 1) ,但2 4h后 ,eNOS的RT PCR结果显示各组间的产物电泳带无明显的差异 .结论 :Hcy可以导致内皮细胞释放NO减少 ,但对eNOS的转录却没有明显的影响     

一氧化氮对白血病HL-60细胞作用的研究

目的 :探讨NO对髓系白血病细胞HL - 6 0的作用。方法 :以SNP为NO供体 ,采用MTT法检测细胞生长抑制率 ,光镜、电镜观察细胞形态学变化 ,DNA电泳、FCM检测凋亡率等方法。结果 :SNP在 0 .5～ 4 .0mmol/L浓度范围内能明显抑制HL - 6 0细胞的生长 ,此作用有浓度和时间依赖性 ;且在作用 12h后细胞出现凋亡 ,SNP2 .0mmol/L浓度作用 36h ,凋亡率达 6 8.71% ,DNA电泳出现梯形带。NO清除剂N -乙酰半胱氨酸能显著降低SNP的这种作用 (P <0 .0 1)。结论 :NO对HL - 6 0细胞有明显的生长抑制和诱导凋亡作用。     

人精液中一氧化氮和γ-谷氨酰基移换酶活性的关系

目的 :探讨人精液中一氧化氮 (NO)与γ 谷氨酰基移换酶 (γ glutamyltransferase,GGT)活性的关系 .方法 :参照WHO标准 ,进行精液常规分析 ,按精子密度 (× 1 0 9/L)、活动率 (% )不同分为 (正常 ,<2 0 ,<2 0～ 4 0 ,>4 0 ) 4个组 .采用镀铜镉还原荧光法检测NO代谢产物硝酸盐 (NO-3 ) .用以Glucana为底物动力学方法测定精液GGT活性 .结果 :89例不育者NO含量为 (78.5± 1 .5 ) μmol/L ,与精子密度 (33.3±1 4 .3)× 1 0 9/L ,活动率 (33.3± 1 4 .3) %及GGT活性 (2 0 3.1 9±35 .89)× 1 0 3 nkat/L呈显著的负相关 (r分别为 - 0 .5 6 ,- 0 .6 3,- 0 .71 ,P <0 .0 1 ) .结论 :精液GGT活性测定是评价附睾头部功能的重要指标 ,提示NO对精液GGT活性有抑制 ,从而灭活影响精子的成熟和运动能力     

来源于肾上腺髓质素原的不同肽段对大鼠主动脉一氧化氮生成的影响

目的 :观察肾上腺髓质素 (ADM)对大鼠主动脉一氧化氮 (NO)生成的作用 ,以及肾上腺髓质素原N端 2 0肽 (PAMP)和肾上腺升压素 (ADT)对ADM这一作用的影响。方法 :ADM ,PAMP和ADT孵育离体大鼠主动脉 2h后 ,测定孵育液中亚硝酸盐的含量和所孵育组织中一氧化氮合酶 (NOS)的活性 ,其中亚硝酸盐的含量反映NO的生成量。结果 :ADM(10 -9～ 10 -7mol·L-1)浓度依赖地刺激大鼠主动脉组织亚硝酸盐的生成和NOS的活性。 10 -8mol·L-1的ADM孵育血管后 ,每毫克蛋白亚硝酸盐的生成量为 (0 .2 82± 0 .0 4 6) μmol,NOS活性为 (0 .3 2 3± 0 .0 5 6)pmol·min-1,显著高于对照组 [每毫克蛋白 (0 .173± 0 .0 2 6) μmol和 (0 .110± 0 .0 2 8)pmol·min-1,P <0 .0 1]。此浓度的ADM与相同浓度的PAMP或ADT共同孵育血管后 ,每毫克蛋白亚硝酸盐的生成量为 (0 .2 0 4± 0 .0 4 9)或(0 .15 0± 0 .0 3 6) μmol,NOS活性为 (0 .178± 0 .0 2 3 )或 (0 .12 3± 0 .0 3 1) pmol·min-1;ADM ,PAMP和ADT三者共同孵育 ,每毫克蛋白亚硝酸盐的生成量为 (0 .162± 0 .0 2 9) μmol,NOS的活性为 (0 .110± 0 .0 2 4 ) pmol·min-1,均显著低于ADM (10 -8mol·L-1)单独孵育组 (P <0 .0 1)。无论PAMP还是ADT单独孵育血管组织均不影响其亚硝酸盐     

高浓度胰岛素对无血清培养的人脐静脉内皮细胞一氧化氮产生的影响

目的　观察无血清培养条件下 ,高浓度胰岛素对人脐静脉内皮细胞 (HU VECs)产生一氧化氮 (NO即 EDRF)功能的影响 .方法　第 2～ 4代的 HUVEC以普通 DMEM培养液培养 3d后 ,试验组换用含 14.35 ,2 8.70和 5 7.40 nmol· L- 1重组人胰岛素的无血清无酚红 DMEM培养液培养 ,对照组采用普通无血清无酚红 DMEM培养液培养 .每 2 4h换液 1次至72 h,换液时利用 Griess反应比色法检测细胞培养上清中 NO代谢产物— NO2 - 离子的 2 4h累积量 .结果　无血清培养条件下 2 8.70和 5 7.40 nmol· L- 1 胰岛素培养 48h可以使HU VEC培养上清 NO2 -离子的 2 4h累积量显著减少 .对照组 (4 7.0± 4.0 ) nmol,2 8.70 nmol·L- 1 胰岛素组 (4 0 .9± 3.4)nm ol;5 7.40 nm ol· L- 1胰岛素组 (38.1± 1.9) nmol,P<0 .0 5 .结论　高浓度胰岛素 (>2 8.70 nmol· L- 1 )长时间 (>48h)作用可以减少无血清培养的 HUVEC NO的产生 .由于NO是心血管系统重要的保护因子 ,高浓度胰岛素可能通过本途径直接促进心血管系统疾病的发生和发展 .     

大鼠肝纤维化过程中NO及NOS水平的动态变化

目的 研究大鼠肝纤维化过程中一氧化氮(NO)及一氧化氮合酶(NOS)水平的变化规律。方法 给予大鼠皮下注射CCl_4建立肝纤维化模型,采用比色法测定造模后不同时间点血清NO水平及肝组织NOS活性,并进行肝组织病理学检查,动态观察肝纤维化过程中NO及NOS水平的变化。结果 注射CCl_4后5、10d,肝组织病理改变主要表现为肝细胞坏死、气球样变性及炎性细胞浸润,NO及NOS水平明显升高(模型组NO、NOS水平比对照组NO、NOS水平分别为8.95±0.34μmol/Lvs3.33±0.46μmol/L及1.75±0.51nmol·min~(-1)·g~(-1)vs0.26±0.12nmol·min~(-1)·g~(-1),P均<0.01);20、30、45d,肝组织除上述病理改变外,汇管区逐渐出现纤维结缔组织增生,并向小叶内延伸,N0及NOS水平维持在高于对照组水平(模型组N0、NOS水平比对照组NO、NOS水平分别为8.60±0.89μmol/Lvs2.45±0.51μmol/L及/1.88±0.10nmol·min~(-1)·g~(-1)vs0.39±0.20nmol·min~(-1)·g~(-1),P均<0.01)。结论 大鼠肝损伤及肝纤维化时NO及NOS水平均明显升高。     

基础理论

021881 NO对抗精子抗体阳性大鼠精子自发顶体反应的影响/张威…//生殖与避孕一2002,22(4)一203一207 采用主动免疫法建立抗精子抗体(AsAb)阳性大鼠动物模型;浅盘凝集实验和ELISA法检测大鼠血清AsAb;考马斯亮蓝染色法进行精子顶体染色,以观察大鼠自发精子顶体反应率。结果:AsAb阳性大鼠精子自发AR%下降,且内源性NO含量、精子内SOD和Na十一K十ATP酶活性明显低于对照组;低剂量NO(SNP10一9一10一8 mol/L)可提高AsAb阳性大鼠精子自发顶体反应率、SOD活性,但对Na+一K十ATP酶活性无影响(P>0 .05)。高剂量NO(SNP10一6一10一4mol/…     

Acupuncture Treatment of Vomiting

CASE HISTORY A female patient, 46 years old, head of the foreign affairs department of a certain university in Beijing, paid her first visit on October 9, 2006, with the chief complaint of vomiting for one month. She got vomiting after meals in early September. Before that, she had discomfortable sensation in the stomach due to angry with others, but she didn't pay much attention. Later, it developed into vomiting after eating. After the vomiting, the discomfort would be relieved, but with slight hypodynamia. She was once diagnosed as having 'neurogenic vomiting'. Having taken some western and Chinese drugs, the above symptoms were a little bit improved, but she would have nausea upon eating and with regurgitation. Because of the fear for vomiting, she did not dare to have food intake, with body weight reduction of 6 kilos in one month.     

Qiu Baoguo''''s Experience in Treating Consumptive Syndromes after Radio-Chemotherapies

Radiotherapy and chemotherapy are the important modern medical therapies for malignant tumors,yet they can also bring about serious local and systemic toxic side reactions so to decrease the patient;'s life quality,manifested by a series of consumptive symptoms.Having engaged in the combined work of Chinese and western medicine for nearly 50 years,the research fellow Qiu Baoguo in Henan Provincial Academy of TCM has developed his unique views on the TCM study of consumptive syndromes.The author of this essay had once the fortune tO follow Dr.Qiu in clinic,and specially would like to introduce in the following Dr.Qiu's experience in treating consumptive syndromes after radio-chemotherapies for patients with malignant tumor.     

Insomnia Due to Deficiency of Both the Heart and Spleen Treated by Acupuncture-Moxibustion and Chinese Tuina

OBJECTIVE: To observe therapeutic effects of the comprehensive therapy of acupuncture-moxibustion and Chinese Tuina for treatment of insomnia due to deficiency of both the heart and spleen. METHODS: 92 cases were divided randomly into the treatment group (treated by acupuncture-moxibustion and Chinese Tuina) and the control group (treated by acupuncture-moxibustion). RESULTS: The therapeutic effect of the treatment group was obviously superior to that of the control group (the CHI2 test showed P < 0.01). CONCLUSIONS: The comprehensive therapy of acupuncture-moxibustion and Chinese Tuina can give marked therapeutic effects for treatment of insomnia due to deficiency of both the heart and spleen.     

Analysis of CK-19,PDX-1,Nestin,Ngn3 in different donor islet purity in rats

Objective: To investigate if there are the CK-19, PDX-1, Nestin, Ngn3 positive cells in the donor islets of different purity in rats. Methods: Thirty male adult SD rats were randomly divided into 3 groups. Islets were isolated using digestion by ductal injection of collagenase. Group Ⅰ (n=10): Separating cell preparations were not purified, Group Ⅱ(n=10): Islet sediment was purified with 25% Ficoll400 ,Group Ⅲ (n=10): Islet sediment was purified with 25% and 11% Ficoll-400. The levels of protein of CK-19, PDX-1, Nestin and Ngn3 were detected by immunohistochemistry and the mRNA of CK-19, PDX-1, Nestin, Ngn3 was amplified by RT-PCR. Results: After two different purification methods applied, three islet preparations of different purities were obtained. The difference of islet purity was significant among various groups (P＜0.05). Compared with group Ⅱ and group Ⅲ,the protein and mRNA of CK-19, PDX-1, Nestin,Ngn3 were both higher in group Ⅰ; group Ⅲ was poorly expressed. Conclusions: The three different islet purity donor islet have different CK-19, PDX-1, Nestin, Ngn3 positive cells within them, indicating that there are some islet stem cells in the purified donor islet.     

A preliminary screening study on the associated proteins in human psoriasis vulgaris by serum proteomics technologies

Objective：To investigate the optimum screening conditions of associated proteins in human psoriasis vulgaris by serum proteomics technique, and to screen the different expression proteins related with psoriasis vulgaris. Methods：Serum samples of peripheral blood were collected from newly diagnosed psoriasis vulgaris patients in the clinic, and 20 matched healthy persons. Serum albumin IgG was removed by filtering with ProteoExtract Albumin/IgG. After comparative proteomics analysis the different protein spots were identified using 2-DE and MS. Results ：Electrophoresis figures with high resolution and reproducibility were obtained. Three different expression proteins were found only in the serum from psoriasis vulgaris patients, while nine other different proteins expressing from healthy volunteers. Conclusion：The protein expression was different in the serum between the psoriasis vulgaris patients and healthy volunteers. It was hoped that we could find the biomarkers related to psoriasis vulgaris by using proteomics.     

A CASE OF HUGE GASTRIC DISOPYROBEZOAR

PYTOBEZOARS are common bezoars in gastrontestinal tract, commonly seen in stomach and mall intestine,1but huge disopyrobezoars are     

Acupuncture Treatment of Chest Bi Syndrome

CASE HISTORY A male,a retired officer of 61 years old,paid his first visit on May 12,2006.The patient stated that 2 weeks before he suddenly got paroxysmal precordial choking pain,with irregular attacks.Each attack would last several seconds to several minutes.The attack was accompanied with heavy oppressed sensation in the precordial region,palpitation,lassitude,and in severe cases,sweating,which was once diagnosed by a hospital as'coronary heart disease'.Recalling the case history,the patient said that several days before he got angry with others because of some affairs in work,and he was not so used to the life pattern since he had just retired from his busy working post.At usual times,he was quick tempered and peevish.In recent days,he had poor appetite,and loose stool.     

Instructions to Contributors

The English edition of Chinese Journal of Integrative Medicine is edited and published by the Chinese Journal of Integrated Traditional and Western Medicine Press.Original scientific papers of advanced clinical and experimental medicine in the field of complementary/alternative medicine or integrative medicine are expected.