川芎嗪对急性放射损伤小鼠早期骨髓微血管系统的影响

对全身亚致死量^(60)Co 照射后的小鼠立即腹腔注射磷酸川芎嗪注射液250mg/kg,每天2次,连续7天,观察尺骨骨髓切片。第5天,川芎嗪组骨髓微血管数较对照组明显增多,第7天,对照组已降到正常值,而川芎嗪组仍持续增多,而且微血管面积明显扩张。应用川芎嗪7天内尺骨骨髓造血组织容量百分率与对照组比较,无明显差异;但照射后第7天,川芎嗪组外周血中性粒细胞比率有所上升。上述结果提示,在急性放射损伤后早期应用川芎嗪能促进和改善骨髓的血流供应,可能有助于骨髓造血的恢复。

热休克蛋白HSP90α、HSP70、HSP27在急性白血病中的表达

运用ＲＮＡ分子杂交的方法，观察了热休克蛋白（ｈｅａｔｓｈｏｃｋｐｒｏｔｅｉｎ，ＨＳＰ）９０α、７０、２７在２２例白血病病人细胞、正常血细胞及Ｋ５６２红白血病细胞系中的表达。结果表明：１６例白血病病人中，血细胞呈现ＨＳＰ２７高水平表达，较正常血细胞显著增多１３例，其中急性淋巴细胞白血病（ＡＬＬ）４例，急性非淋巴细胞白血病（ＡＮＬＬ）６例，慢性粒细胞白血病急变期（慢粒急变）１例和骨髓增生异常综合征（ＭＤＳ）２例，ＡＬＬ（５例）与ＡＮＬＬ（７例）白血病细胞ＨＳＰ２７表达水平无明显改变。检测了７例白血病细胞ＨＳＰ７０的表达水平，除１例ＡＬＬ及１例ＭＤＳ明显升高外，其余５例（包括１例ＡＬＬ，３例ＡＮＬＬ和１例慢性急变）显著低于正常血细胞。１７例白血病病人细胞（包括ＡＮＬＬ９例、ＡＬＬ５例、慢粒急变２例和ＭＤＳ１例）ＨＳＰ９０α表达水平均升高，明显高于正常。结果提示；白血病细胞ＨＳＰ９０α表达水平的升高可能与白血病细胞活跃异常增殖有关，而ＨＳＰ２７基因的高表达可能不是某种急性白血病的特殊标志。

血栓性血小板减少性紫癜诊断和治疗的初步探讨（附5例报告）

报告５例血栓性血小板减少性紫癜（ＴＴＰ），４例具典型的的五联征，仅１例缺乏肾损害。本病最具特征的是外周血清中出现多数破碎红细胞。讨论了血浆置换（ＰＥ）治疗ＴＴＰ的主要机理，以及ＰＥ结合输新鲜血浆、大剂量糖皮质激素、抗血小板聚集剂治疗ＴＴＰ的疗效。

热休克蛋白90α、70、27mRNA在急性白血病细胞中表达的研究

运用RNA分子杂交的方法,观察了热休克蛋白(heat shock protein,HSP)90α、70、27在22例白血病病人细胞,正常血细胞及K562红白血病细胞系中的表达。结果表明:16例白血病病人中,4例急性淋巴细胞白血病(ALL),6例急性非淋巴白血病(ANLL)、1例慢性粒细胞白血病急变期(慢粒急变)和2例骨髓增生异常综合征(MDS)血细胞呈现HSP27高水平表达,较正常血细胞显著增多,ALL(5例)与ANLL(7例)白血病细胞HSP27表达水平无明显改变。检测了7例白血病细胞HSP70的表达水平,除1例ALL及1例MDS明显升高外,其余5例(包括1例ALL,3例ANLL和1例慢粒急变)显著低于正常血细胞。17例白血病病人细胞(包括9例ANLL、5例ALL、2例慢粒急变和1例MDS)HSP90α表达水平均升高,明显高于正常。结果提示:白血病细胞HSP90α表达水平的升高可能与白血病细胞活跃异常增殖有关,而HSP27基因的高表达可能不是某种急性白血病的特殊标志。

热休克蛋白HSP90α、HSP70、HSP27在急性白血病中表达的研究

热休克蛋白(heat shock protein,HSP)是保护细胞在热休克及应激条件下免受损伤的一种蛋白,具有广泛生理功能,其中细胞组成性HSP90α、HSP70、HSP27与自血病细胞增殖、分化和耐热性等有密切关系。为此,我们研究了HSP基因在急性白血病细胞,正常血细胞中的表达及临床意义,报告如下。

复方活血汤对免疫诱导再生障碍性贫血小鼠骨髓微环境的作用研究

目的 :探讨临床上治疗再生障碍性贫血 (再障 )加用活血化瘀药物提高疗效的机制。方法 :建立免疫介导的再障小鼠模型 ,胃饲 1 0 0 %复方活血汤注射液每次 0 2ml,每天 2次 ,第 1 0天观察骨髓组织学、体外成纤维细胞集落形成单位 (CFU -F)、培养基质细胞层的粘附能力 ,骨髓氧分压 (PO2 )。结果 :复方活血汤组小鼠白细胞计数 ,骨髓有核细胞计数 ,骨髓造血组织容量、CFU -F计数 ,均较再障组有明显升高 (P <0 0 1 ) ;且基质细胞粘附功能、骨髓PO2 已恢复至正常。结论 :复方活血汤可促进再障小鼠骨髓微环境的修复及供氧 ,从而促进骨髓造血。

复方活血汤对辐射损伤小鼠骨髓基质细胞粘附功能的影响

目的：研究常用活血化瘀中药对急性放射损伤小鼠骨髓基质细胞粘附功能的影响。方法：小鼠接受８ＧＹ６０Ｃｏγ射线照射后立即腹腔注射１００％复方活血汤液０．２ｍｌ，每天２次，连续６天，第７天取股骨骨髓制备有核细胞（ｂｏｎｅｍａｒｒｏｗｃｅｌｌ，ＢＭＣ）悬液，按长期骨髓细胞培养技术，第１２天计数成纤维细胞集落形成单位（ｆｉｂｒｏｂｌａｓｔｃｏｌｏｎｙｆｏｒｍｉｎｇｕｎｉｔ，ＣＦＵ－Ｆ），第２８天观察培养的基质细胞层对正常小鼠ＢＭＣ的粘附能力。结果：正常小鼠骨髓培养的基质细胞层粘附正常小鼠ＢＭＣ的能力为６７．８±１７．２％，复方活血汤组为５５．８±１０．５％，差异无显著意义（Ｐ＞０．０５）；对照组为４７．７±１３．６％，显著低于正常组（Ｐ＜０．０２）。结论：常用活血化瘀中药能增强急性放射损伤小鼠骨髓基质细胞粘附功能。

常用活血化瘀中药对急性放射损伤小鼠骨髓微环境及其供氧的影响

给昆明小鼠8Gy60Coγ射线照射后，立即腹腔注射100％复方活血汤注射液（每ml含生药1g）0．2ml／只，每d2次，连续10d。分别于照射后第3、7、14d测定活体原位尺骨骨髓氧分压，观察相同部位骨髓切片组织学。结果表明，常用活血化瘀中药能促进急性放射损伤小鼠骨髓微血管恢复、增生，扩张其面积，使骨髓氧分压明显增高，增加骨髓微环境供氧，促进造血细胞增生。

川芎嗪对急性放射损伤小鼠骨髓细胞粘附分子作用研究

为探讨急性放射损伤小鼠骨髓细胞粘附分子表达及川芎嗪对其影响，将27只昆明小鼠平均分为3组：正常组，急性放射损伤对照组，川芎嗪组。将对照组及川芎嗪组小鼠用8．0Gy60Coγ射线照射后，分别胃饲生理盐水及25mg／ml川芎嗪注射液0．2ml／只，每d2次，连续6d。第7d用流式细胞仪检测所有小鼠骨髓单个核细胞CD49d、CD49e的表达水平，用免疫组织化学SABC方法检测骨髓基质细胞VCAM－1的表达、结果发现急性放射损伤对照组CD49d、VCAM－1的表达显著低于正常组（P＜0．01，P＜0．001），川芎嗪组CD49d、CD49e、VCAM－1的表达均显著高于对照组（P＜0．01，P＜0．001），且CD49d、CD49e高于正常组。结果显示川芎嗪能增强急性放射损伤小鼠骨髓造血细胞和基质细胞粘附分子的表达，有利于造血细胞的增生。

复方活血汤对急性放射损伤小鼠骨髓造血细胞保护作用机制探讨

已知急性放射损伤的早期,骨髓突出表现为造血细胞急剧减少和静脉窦扩张、充血、血流瘀滞,基于活血化瘀原理,我们用活血化瘀中药丹参、当归、川芎、赤芍复方制剂治疗急性放射损伤所致的骨髓“血瘀症”,观察到常用活血化瘀中药能促进急性放射损伤小鼠骨髓微血管恢复、增生、扩张其面积、增加骨髓微环境供氧、促进造血细胞增生。我们同时观察了,该制剂对急性放射损伤小鼠骨髓造血细胞增殖周期调控基因 _(53)、GADD_(153)表达的作用,以探讨复方活血汤如何在分子生物学水平上调节骨髓造血细胞增生,报告如下。

急性髓系白血病细胞p16基因结构及mRNA表达分析

为了解p16基因在急性髓系白血病(AML)发病中的意义,用PCR-SSCP和Northern blot方法分析了16例AML细胞p16基因结构及mRNA的表达。研究结果表明,16例未发现p16基因的缺失、突变。初治和复发的12例AML的p16 mRNA表达水平明显低于4例长期缓解者及正常对照者。1例p53突变AML的p16 mRNA有明显升高,提示p16基因在AML发病中可能不占重要地位,而在AML细胞抑制正常造血的逐步恶化中起一定作用,在p53突变时,其表达反馈性升高显示一种反馈环路失衡。

Effects of Ligustrazine on Bone Marrow Microvessel Systemin the Early Period of Acute Radiation Injury in Mice

Sublethally irradiated mice were immediately treated with 250 mg/kg Ligustrazine Phosphiatis intraperitoneally twice a day for seven days, and the bone marrow sections of ulna were observed. On the 5th day, the number of bone marrow microvessels of the Ligustrazine group was much greater than that of the control group. On the 7th day, the amount of the control group decreased to normal, while the ligustrazine group was still increasing, and the microvessel area was enlarged obviously. The percentage of the hematopoietic tissue volume in bone marrow between the two groups had no significant difference in the first 7days. On the 7th day after irradiation, the peripheral neutrophilic granulocytes increased in the Ligustrazine group- The results suggested that early use of Ligustrazine after acute radiation injury might improve the blood supply of bone marrow, and be helpful for recovery of hematopoiesis.

Study of Heat Shock Protein HSP90α，HSP70，HSP27 mRNA Expression in Human Acute Leukemia Cells

The expression of three heat shock proteins (HSPs)-HSP90, HSP70,HSP27 in cells obtained from 22 patients with leukemia, K562 erythroleukemia cell line, and normal blood cells was observed by means of RNA dot blot analysis.The results showed that the expression of the HSP27 gene was enhanced in 4 cases of acute lymphoid leukemia (ALL), 7 cases of acute nonlymphoid leukemia (ANLL) and 2 cases of myelodysplastic syndrome (MDS) as compared with that of the normal blood cells, yet there was no significant difference in the HSP27 expression between the ALL and ANLL cells. The expression of HSP70 in all the 5 ALL and ANLL patients was much lower than that of the normal subjects, except 1 case of ALL and 1 case of MDS, in which the expression was obviously enhanced. All the cases including 11 ANLL, 5 ALL and 1 MDS had higher HSP90α expression than the normal subjects. The enhanced expression of HSP90α in leukemia cells may be associated with the active and indefinite proliferation of leukemia cells. Our results also suggest that the high expression of the HSP27gene may not be confined to a specific type of acute leukemia.

Study on Immunoregulation by Interleukin-1 ReceptorAntagonist in NZB/W F_1 Mice

The immunoregulating effect of Interleukin-1-receptor antagonist (ILlra ) in lupus-like NZB/W F, mice was investigated to find possible approach to prevent lupus nephritis. 12 female NZB/W F1 mice of 13 weeks were randomly divlded into 2 groups. Each mouse in the treated group was intraperitoneally injected wlth IL-lra once every 2 weeks for 3 times at the dosage of 100μg each time,while the control group was given injection of 0.1 ml normal saline. All the mice were killed at the age of 9 months and the irnmunologic function was examined.Results showed that this dosage could not completely prevent the development of lupus nephritis, but the renal damage was alleviated and the urine protein was decreased. Moreover, it could improve the immunofunction by significantly reducing the levels of serum IL-1 and obviously increase the activities of NK celIs and IL-2 induced by ConA in mononuclear cells of spleen. There was no significant difference in the levels of serum IL-6 and TNF-α between the treated group and control group. It is concluded that IL-lra has certain regulatory effect on the immunologic function of lupus-like NZB/W F, mice.

Study on Oxygen Supply and Protection of Bone Marrow in Acute Radiation injured Mice

After irradiated by & Gy 60Co γ-ray, mice were intraperitoneally injected immediately with 0.2 ml 100 % compound blood-activating soup twice a day for 10 days. The in situ ulnar bone marrow partial pressure of oxygen (PbO2) was determined in vivo before, during and after irradiation respectively. The bone marrow sections in the same part were observed. Our results showed that the normal murine ulnar PbO2 was 12.72±1. 05kpa. During irradiation, the level of PbO2 decreased to 10. 78±1. 17 kpa (P＜0. 001). And 3 days after irradiation, PbO2 decreased to 9. 75±0. 52 kpa, suggesting that the commonly used 'blood-activating and stasis-eliminating' Chinese drugs could promote the rehabilitation and proliferation of bone marrow microvessels in the acute radiation injured mice, expand their areas, increase the oxygen supply of bone marrow microenviroment, thereby leading to PbO2 much higher increase than that of control group. It is also helpful in the proliferation and rehabilitation of hematopoietic cells.

Study on the Protective Effects of Compound Blood-activating Soup on Bone Marrow Hematopoietic Cells in Acute Radiation Injured Mice

After irradiation with 8 Gy 60Coγ-ray,mice were immediaterly given intraperitoneal injection of 200 mg 100 % compound blood-activating soup twice a day. On the 3rd and 7th day, the P53 gene expression of bone marrow hematopoietic cells in Chinese drug group was found to be higher than that in normal group, and it was also significantly higher than that in control group. The expression level of GADD153 gene which was not expressed in normal group was much lower in Chinese drug group than that in control group. On the 7th day after irradiation, the P53 and GADD153 gene expression levels of splenic mononuclear cells were consistent with those of bone marrow hematopoietic cells both in Chinese drug group and control group. On the 3rd and 7th day, the bone marrow hematopoietic tissue volume in Chinese drug group was higher than that in control group, with no difference found between the two groups. While on the 14th day, the difference became significant (P＜0. 01). The results showed that commonly used blood-activating and stasis-eliminating drugs may strengthen .the viability of hematopoietic cells and promote the rehabilitation of hematopoiesis by inducing wt-P53 expression to block the bone marrow hematopoietic cells in G1 phase, during which DNA could be repaired.

活血化瘀中药对受照小鼠骨髓微环境及其供氧的作用

活血化瘀中药对受照小鼠骨髓微环境及其供氧的作用刘文励孙汉英路武徐慧珍肖侃艳董凌莉何美冬胡永熙沈安华江琦骨髓微环境主要由基质细胞、细胞外基质和微血管系统组成。我们观察了常用活血化瘀中药（丹参、当归、川芎、赤芍等）对急性放射损伤骨髓微环境的修复及其供氧的...

复方活血汤对放射性损伤小鼠造血细胞bcl-2、bax、bcl-xL基因表达的作用

目的探讨放射性损伤骨髓衰竭的机理及防护对策。方法用Ｎｏｒｔｈｅｒｎｂｌｏｔ技术检测了６０Ｃｏγ射线８．０Ｇｙ照射小鼠（对照组）及照射后立即给复方活血汤治疗小鼠（中药组）的骨髓有核细胞ｂｃｌ－２、ｂａｘ、ｂｃｌ－ｘＬ基因表达。结果放射损伤后第３，７天，对照组骨髓有核细胞ｂｃｌ－２／ｂａｘ值减小、ｂｃｌ－ｘＬ不表达。中药组与之相反，ｂｃｌ－２／ｂａｘ值明显增大、ｂｃｌ－ｘＬ明显表达。受照后第７天两组脾脏单个核细胞ｂｃｌ－２／ｂａｘ值与骨髓有核细胞的表达一致。结论复方活血汤对放射损伤骨髓造血细胞增殖周期调控基因ｂｃｌ－２、ｂａｘ、ｂｃｌ－ｘＬ有一定调节作用。

急性髓系白血病细胞p16基因结构及转录水平表达

目的：了解ｐ１６基因在急性髓系白血病（ＡＭＬ）发病中的意义。方法：用聚合酶链反应－单链ＤＮＡ构象多态性、Ｎｏｒｔｈｅｒｎｂｌｏｔ方法分析１６例ＡＭＬ细胞ｐ１６基因结构及转录水平表达。结果：１６例均无ｐ１６基因的缺失、突变。初治和复发的１２例ＡＭＬ的ｐ１６ｍＲＮＡ表达水平明显低于４例长期缓解者及正常对照。１例ｐ５３基因突变ＡＭＬ的ｐ１６ｍＲＮＡ有明显升高。结论：ｐ１６基因在ＡＭＬ发病中可能不占重要地位，而在ＡＭＬ病态造血的维持中起一定作用，在ｐ５３突变时其表达反馈性升高，显示一种反馈环路失衡，提示在研究单个基因的基础上观察细胞周期检测点功能具有重要意义。