ROLE OF B LYMPHOCYTE AND ITS SUBPOPULATIONS IN PATHOGENESIS OF IMMUNORELATED PANCYTOPENIA

Objective To measure the quantities and apoptosis-related protein levels of B lymphocyte in the patients with immunorelated pancytopenia(IRP)and explore the action of B lymphocyte in the pathogenic mechanism of IRP. Methods Quantities of whole B lymphocytes and CD5 B lymphocytes as well as the expressions of Fas and Bcl-2 in B lymphocytes in 35 patients with untreated IRP, 15 IRP patients in complete remission (CR), and 10 normal controls were assayed by flow cytometry. Results The percentages of B lymphocyte and CD5 B lymphocyte were significantly higher in untreated IRP patients than in CR IRP patients and normal controls (P<0.05), and there was no significant difference between the latter two groups (P>0.05). There was no significant difference of Fas expression in B lymphocyte among three groups (P>0.05). The expression of Bcl-2 in B lymphocyte was significantly higher in untreated patients than in CR patients or normal controls (P<0.01), and significantly higher in CR patients than in normal controls (P<0.01). The apoptosis-related index was significantly lower in untreated patients than in CR patients or normal controls (P<0.05), and significantly lower in CR patients than in normal controls (P<0.05). The percentage of B lymphocyte was positively correlated with post-treated response time(r=0.53, P<0.01). Conclusion The production of auto-antibodies in IRP patients probably has some relationship with the abnormal quantities of B lymphocyte and its subpopulations as well as with the inhibition of B lymphocyte apoptosis.     

THE ROLE OF ACETYLCHOLINE IN THE RAT BRAIN AND ITS EFFECT ON 5-HYDROXYTRYPTAMINE METABOLISM DURING ELECTROACUPUNCTURE ANALGESIA

After electroacupuncture (EA) for 25 minutes stthe bilateral Shousanli (LI 10) and Huantiao (GB30) points of rats,5-hydroxytryptamine (5-HT) con-tents in medulla oblongata plus pons and midbrainmarkedly increased with elevation of pain threshold.However,preliminary intraperitoneal injection of at-ropine,a muscarinic receptor inhibitor of acetylcho-line,not only partially blocked the effect of electroa-cupuncture analgesia (EAA),but also abolished theincrease of 5-HT in the brain.These results suggest that the cholinergic systemmay play an important role in EAA,which may bemediated through the central serotonergic system inthe brain.     

THE ROLE OF β-ENDORPHIN IN THE MECHANISMS OF ISCHEMIC ARRHYTHMIA IN RATS

ＴＨＥＲＯＬＥＯＦβ－ＥＮＤＯＲＰＨＩＮＩＮＴＨＥＭＥＣＨＡＮＩＳＭＳＯＦＩＳＣＨＥＭＩＣＡＲＲＨＹＴＨＭＩＡＩＮＲＡＴＳＨｅＢｅｎ（何奔）；ＺｈｅｎｇＤａｏｓｈｅｎ（郑道声）；ＺｈａｎｇＳｈｉｈｕａ（张世华）；ＷｕＹｉｘｉａｎ（邬亦贤）（Ｄｅｐａｒ...     

STUDIES ON THE LUMINESCENCE OF CHANNELS IN RATS AND ITS LAW OF CHANGES WITH“SYNDROMES”AND TREATMENT OF ACUPUNCTURE AND MOXIBUSTION

We previously reported the discovery of 14 channels in the human body,which possessed thebiophysical property of high emission of light.In this study we found the same property on theRen and Du channels in healthy rats.Additionally,we discovered that the luminance of the relat-ed channels in rat models with different“syndromes”varied greatly.For instance,a markedlylow luminance appeared on the Du channel in animals with experimental syndrome of Yang defi-ciency induced by hydrocortisone;while in animals with experimental syndrome of blood deft-ciency caused by bleeding,an apparently low luminance occurred on the Ren channel.The inten-sity of the emitted light on Du and Ren channels increased after acupuncture treatment,but notsignificantly.This phenomenon conforms to the theory in traditional Chinese medicine that theDu channel is the“sea of Yang channels”,while the Ren channel is the“sea of Yin channels”.     

THE ROLE OF CALCIUM ION IN THE PATHOGENESIS OF HUMAN PITUITARY GH-SECRETING ADENOMAS

To study the role of Ca^2 in the pathogenesis of pituitary growth hormone secreting adenornas,the function of Ca^2 in 23 cases of human pituitary GH-secreting adenoma was investigated in monolayer cell culture.It was found that Ca^2- channel blockers nicardipin and nifedipin inhibited hasal and growth hormone releasing hormone (GRH)-stimulated GH secretion in 87.5% and 100.0% of the GH adenomas.respectively,demonstrating that in most human pituitary GH agonist octreotide regulated the processes of GH secretion via Ca^2 had defects in different steps including receptor.postreceptor Ca^2 channel and Ca^2 -GH secreting coupling in 6(66.6%)and 5(55.5%) cases of 9 GH adenomas respectively.Among them,the defects in GRH receptor and SRIF regulated Ca^2 channel are the main causes of the dysfunction of GH adenomas.These defects may be related to GH hypersecretion in GH adenomas.Our data provides advance evidences for intrinsic defects of GH adenomas.     

THE ANALYSIS OF CHANGES AND INFLUENCING FACTORS OF EARLY POSTTHORACOTOMY PULMONARY FUNCTION

Objective. To investigate the changes and influencing factors of early postoperative pulmonary function of thoracotomy.Methods. Pre-and early postoperative pulmonary function was studied in 64 consecutive cases with optimal thoracotomy. Pain assessment was done before pulmonary function test, and the chief complaints of patients were recorded after the procedure. The changing curves of pulmonary function were done and the differences associated with groups, surgical styles, pain assessment, epidural analgesia, chief complaint and preoperative conditions were analyzed.Results. Pulmonary function was severely lowered to about 40% of the base line on the first day, and it was rehabilitated to about 60% of the base line on the eighth day. There was a greater gradient on the recovery curve on the 3rd and 4th days. Epidural analgesia was able to improve pain relaxation and pulmonary function in some degree. Single-factor analysis showed that postoperative pain, postoperative day and surgical style were the si     

THE ROLE OF CALCIUM ION IN THE PATHOGENESIS OF HUMAN PITUITARY GH－SECRETING ADENOMAS

ＴＨＥＲＯＬＥＯＦＣＡＬＣＩＵＭＩＯＮＩＮＴＨＥＰＡＴＨＯＧＥＮＥＳＩＳＯＦＨＵＭＡＮＰＩＴＵＩＴＡＲＹＧＨ－ＳＥＣＲＥＴＩＮＧＡＤＥＮＯＭＡＳＤｅｎｇＪｉｅｙｉｎｇ（邓洁英）；ＳｈｉＹｉｆａｎ（史轶蘩）ａｎｄＹｉｎＪｕａｎＪｕａｎ（尹娟娟）（Ｄｅｐ...     

THE ROLE OFαANDβRECEPTORS AND THEIR REGULATION OF 5-HT METABOLISM OF RAT BRAIN IN ELECTROACUPUNCTURE ANALGESIA

The contents of 5-HT and 5-HIAA in medullaoblongata plus pons and midbrain of rats markedlyincreased in EAA.A pre-injection of phentolamine(i.p.) enhanced the analgesic effect of EA and pro-duced increases in 5-HT and 5-HIAA in striatumafter EA.However,a pre-injection of propranolol     

EFFECTS OF ATROPINE ON THE CHANGES OF PAIN THRESHOLD AND CONTENTS OF LEUCINE-ENKEPHALIN AND CATECHOLAMINES OF THE BRAIN IN RATS INDUCED BY EA

After rats received electroacupuncture(EA),leucine-enkephalin(LEK) content in striatumand dopamine(DA)concentration in both brain stem and diencephalon markedly increased,and noradrenaline(NA)level in telencephalon definitely decreased with an obvious elevationof pain threshold.However,a previous intraperitoneal injection of atropine,a blocker ofmuscarinic receptor,not only partially blocked the analgesic effect of EA,but also changedthe effects of EA on LEK,NA and DA contents of the brain.The results indicate thatchollnergic system plays an important role in electroacupuncture analgesia (EAA),whichmay be fulfilled partially through the central LEK and catecholamine(CA)systems.     

DYNAMIC OBSERVATION ON THE CHANGES OF PLASMA SOMATOSTATIN AND GLUCAGON DURING THE DEVELOPMENT OF CIRRHOSIS AND AFTER PORTACAVAL SHUNTING IN THE CIRRHOTIC RATS

In the present study we observed dynamically and systemically the changes of plasma somatostatin and glucagon in the peripheral and portal vein, and the changes of pancreatic immunopathology in the course of development of cirrhosis induced by CCl_4 and after portacaval shunt (PCS) in the cirrhotic rats as well as investigated their causes and correlationship. The results showed that hyperglucagonemia was caused by spontaneous portosystemic shunting and surgically induced portacaval anastomosis. Moreover, there was much higher level of glucagon in the portal vein with corresponding increase of A cells in PCS rats than those in the controls, indicating that another cause for elevation of glucagon was hypersecretion of pancreatic A cells. Our data demonstrated that both deterioration of liver function and portosystemic shunting might not be responsible for the elevated level of somatostatin in the cirrhotic rats with PCS. However, there was a closed positive correlation between plasma glucagon and somatostatin. Thus it was concluded that hyperglucagonemia stimulated the release of somatostatin. In view of the fact the elevated level of glucagon was much higher than that of somatostatin, there was probably a relative lack of somatostatin in cirrhosis with portal hypertension.     

慢性常压低氧高二氧化碳肺动脉高压大鼠血浆内皮素变化及意义

应用低Ｏ２高ＣＯ２肺动脉高压大鼠模型，观察了不同低Ｏ２高ＣＯ２时间血浆内皮素含量（ＥＴ）、平均肺动脉压（ｍＰＡＰ）、右心室重量（ＲＶ／１００ｇＢＷ、ＲＶ／ＴＶ）的变化。结果显示，随低Ｏ２高ＣＯ２时间的延长，ｍＰＡＰ与ＥＴ均逐渐升高，二者呈良好正相关（ｒ＝０．７４２，Ｐ＜０．００１）。各实验组的ＲＶ／１００ｇＢＷ和ＲＶ／ＴＶ均高于对照组（Ｐ＜０．０１或０．００１）。血浆ＥＴ浓度与ＲＶ／１００ｇＢＷ呈良好正相关（ｒ＝０．５８６，Ｐ＜０．００１）。表明慢性常压低Ｏ２高ＣＯ２肺动脉高压大鼠血浆内皮素浓度增加，与肺动脉高压的形成及右心室肥大有关。     

慢支、肺气肿并肺动脉高压的特征及其机制探讨

目的:探讨慢性阻塞性肺疾病(COPD)肺动脉高压的不同阶段的特征及其相关机制.方法:将40只Wistar大鼠随机分成5组,每组8只.A组:低氧性肺动脉高压组,10%低氧,8 h/d,2周;B组:慢支、肺气肿并肺动脉高压组,分别于第1天、第14天经气管注入脂多糖(LPS)200 μg,烟熏2 h/d,6周,最后2周同时叠加18%低氧,8 h/d;C组:慢支、肺气肿组,分别于第1天、第14天经气管注入LPS 200 μg,烟熏2 h/d,共6周;D组:18%低氧,8 h/d,2周;E组:正常对照组,正常饲养6周.各组作血气分析,肺血流动力学测定和肺泡灌洗液(BALF)白细胞总数及分类计数.观测气道及肺组织和肺血管的病理组织学改变.结果:①与E组比较A、B组PaO2呈不同程度降低(P＜0.05),A、B组右心室收缩压(RVSP)、平均肺动脉压(mPAP)、右心室与左心室 室间隔重量比(RV/LV S)升高(P＜0.05).A、B组肌化型动脉(MA)增多,管壁增厚(P ＜0.05);②C、D组血气分析无变化(P＞0.05),与E组比较,C组RVSP、mPAP、RV/LV S升高(P＜0.05),C组MA增多(P＜0.05),但管壁无增厚(P＞0.05);D组肺血流动力学、肺血管重塑指标无改变(P＞0.05);③支气管肺泡灌洗液(BLAF)中,A、D组白细胞总数及分类计数与E组相当(P＞0.05),病理主要以上皮细胞变性坏死、黏液杯状细胞增生为主,炎细胞浸润不明显(P＞0.05).B、C组白细胞总数及分类计数增多(P＜0.05),中性粒细胞比例增多(P＜0.05),气道病理符合慢支、肺气肿改变,管壁呈现以淋巴细胞为主的多种炎细胞浸润.结论:COPD肺动脉高压在无低氧时期已经形成,炎症因素起重要作用,早期肺血管重塑以MA比例增高为主要表现,低氧加剧了病情的发展,并出现MA肌层的增厚,管腔变小.     

肺动脉高压时腺泡内肺动脉壁胶原相对含量的改变

以野百合碱引起的大鼠肺动脉高压作为模型，应用免疫组化和形态定量的方法，并结合超微结构的变化，动态观察肺动脉高压时腺泡内肺动脉壁Ⅰ、Ⅲ型胶原含量的改变。结果表明，在肺动脉高压发生过程中，腺泡内肺动脉壁Ⅰ、Ⅲ型胶原明显增多。其机制可能与血管平滑肌细胞发生表型变化以及平滑肌前体细胞在向平滑肌转变过程中胶原的合成分泌增多有关。     

All-TRANS RETINOIC ACID INTERFERES DEVELOPMENT OF PULMONARY HYPERTENSION INDUCED BY MONOCROTALINE IN RATS

ffeSUrn6 Obetif Determiner si l 'acfor rdtinOtaue tout trans (aIl trans retinOic acid, atRA) ndi-fis le ndtahatw du colM dans I' artere pelmire et arerce une activitd inhibitrice sur l' hypetendonPUlmonaire induite por la nzoarerotaline chez les rats. ffeM to rats (n = 72 ) etaient divifor en 3gToupe: M Win, groupe ndIe et Ie gTOupe traitd per atRA. te rats (n = 48 ) gnr le grOUpe ndle.et gTOupe atRA ont tOuS recu une intwtion sous-cutand de moarerotaline (60mg/kg). te rats (n = 24 …     

西地那非对野百合碱所致大鼠肺动脉高压的影响

目的：探讨西地那非对野百合碱（MCT）所致大鼠肺动脉高压的影响。方法：Wistar大鼠30只随机分为对照组（C组）、模型组（H组）和干预组（S组）。H组及S组一次注射MCT60mg／b制作肺动脉高压模型,4周后,S组大鼠灌喂西地那非25mg／kg·d^-12周。测定平均肺动脉压（mPAP）、体循环平均动脉压（mPA）、右心室肥厚、肺小动脉管壁增厚指标和血浆中cGMP浓度。结果：S组mPAP明显低于H组（P〈0．01）,3组循环平均动脉压比较,差异无统计学意义（P〉O．05）。右心室游离壁（RV）与左心室＋室间隔（LV＋s）的重量比和肺小动脉平均血管壁面积与血管总面积的百分比（WA）（％）,S组均明显低于H组（P〈0．01）,而血管腔面积与血管总面积的百分比（VA）（％）高于H组（P〈0．01）。S组肺小动脉管壁及管腔狭窄较H组显著减轻,心肌细胞的显微结构比H组好转。S组cGMP浓度显著高于H组（P〈0．01）。结论：西地那非扩张肺血管和逆转肺血管重构,降低肺动脉高压,改善右心室重构,但西地那非不影响体循环动脉压,可能与血浆中cGMP浓度增加有关。     

THE ROLES OF bcl-2 GENE FAMILY IN THE PULMONARY ARTERY REMODELING OF HYPOXIA PULMONARY HYPERTENSION IN RATS

Objective. To investigate the roles of apeptosis in the pulmonary artery remodeling of pulmonary hypertension secondary to hypoxia and illustrate the relative genes expression. Methods. Thirty rats were divided into hypoxia group(10%O2, 8h/d) and normal control group. On the 15th day of hypoxia, pulmonary artery pressure and fight ventricular hypertrophy index were measured and pulmonary artery vessels were studied by light microscope. Then terminal deoxynucleotidyl transferase-mediateddUTP nick-end labeling(TUNEL)technique was used to detect nucleosomal DNA fragmentation of apeptotic cells.In situ hybridization and RT-PCR were used to detect the expression level of bel-2 and bax. Results. The pulmonary artery pressure and right ventricular hypertrophy index of hypoxia group were increased significantly, the pulmonary artery wall of hypoxic group become incrassate than control group. Apeptotic cells can be found in lung with hypoxia or without hypexia. Compared with control group, apeptotic index of hypoxic group decreased significantly. Through the methods of in situ hybridization and RT-PCR, we found the expression of bel-2 increased whereas bax decreased significantly in the hypoxic group. Conclusion. The alternation in bel-2 and bax expression induced by hypoxia play an important role in the pulmonary artery remodeling which is the main pathologic change of p~monary hypertension secondary to hypoxia.     

先天性心脏病合并肺动脉高压的内皮素改变及其意义

应用放射免疫分析法测定３８例先天性心脏病患者血浆内皮素浓度（肺动脉高压组１５例，非肺动脉高压组２３例）。肺动脉高压组内皮素浓度明显高于非肺动脉高压组，肺动脉血浆内皮素浓度明显高于右心室和股动脉；内皮素浓度与肺动脉压力及肺血管阻力呈明显正相关。提示血浆内皮素增高在肺高压形成中具有重要的病理生理意义。     

硝苯吡啶防止野百合碱引起大鼠肺动脉高压的研究

本文给Wistar系大鼠单次腹腔注射野百合碱50 mg/kg,经过3周引起了肺动脉高压伴有右室肥大。在腹腔注射野百合碱后24h开始灌胃给硝苯吡啶,每天二次,每次5mg/kg、10mg/kg或30mg/kg可显著地减轻野百合碱所致的肺动脉压升高和右室肥大。提示硝苯吡啶长期给药有抑制野百合碱形成肺动脉高压的作用。     

缬沙坦对野百合碱所致肺动脉高压大鼠心肌细胞凋亡的影响

目的 :观察缬沙坦 (Valsartan)对野百合碱 (Monocrotaline,MCT)所致肺动脉高压大鼠右室心肌细胞凋亡的影响。方法 :将健康雄性 Wistar大鼠随机分为 3组 :M组 (肺动脉高压模型组 )一次性项背部注射野百合碱 (6 0 m g/ kg)后自由摄食、饮水 ;V组 (缬沙坦干预组 ) ,同 M组注射野百合碱并同等条件饲养 ,4周后开始用缬沙坦 (2 0 mg/ kg· d- 1 )灌胃 ,持续 4周达实验终点 ;C组 (正常对照组 )一次性项背部注射等量生理盐水后与实验组同等条件饲养。采用大鼠尾压测定仪测量鼠尾动脉压 ,然后经微导管介入测定大鼠肺动脉平均压 (m PAP) ;计算右室肥大指数 [RV / (L V+S) ];TUNEL法进行右室心肌细胞凋亡检测。结果 :缬沙坦可有效降低 MCT所致肺动脉高压大鼠模型 m PAP(P <0 .0 5 ) ;抑制右室心肌细胞凋亡 (P <0 .0 1) ;对体循环压力影响差异无统计学意义 (P >0 .0 5 )。结论 :缬沙坦可有效防治肺动脉高压大鼠右室心肌细胞凋亡 ,作用机制可能与其AT1受体阻断作用有关     

THE ALTERATION OF THE PULMONARY ARTERY FLOW SPECTRUM WITH PULMONARY HYPERTENSION

Objeaive and method. To research the alteration of pulmonary flow spectrum of patients with congeni-tal heart disease and the relation between pulmonary flow spectrum and pulmonary artery pressure, 33 pa-tients with congenital heart disease were examined by echocardicgraphy and catheterization. Results. The result showed that the spectrum peak early occurring in patients with pulmonary hyper-tension and the degree of the spectrum peak early occurring was related to ptflmovary artery pressure posi-tively. The result suggested that when the pulmovary artery systolic pressure was over 100 mmHg, the flow spectrum showed slender pattern usually. Conclusion. The slender pattern in pulmonary flow spectrum could be a semi-quantity parameter to predict that the pulmonary artery systolic pressure more than 100 mmHg.