慢性特发性荨麻疹患者外周血T及Th淋巴细胞亚群的表达

目的：探讨慢性特发性荨麻疹患者外周血T及辅助性T淋巴细胞（Th）亚群的表达及其在慢性特发性荨麻疹发病机制中的作用。方法：采用流式细胞术检测经四色荧光抗体染色的慢性特发性荨麻疹患者及正常对照外周血CD3^＋、CD4^＋、CD8^＋T淋巴细胞数及CD4^＋／IFN-γ’（Th1）、CD4^＋／IL-4^＋（Th2）细胞含量。结果：慢性特发性荨麻疹组外周血CD3^＋T淋巴细胞数无明显变化、CD4^＋T淋巴细胞数、CD8^＋T淋巴细胞数均降低;CD4^＋／CD8^＋比值增高,差异有统计学意义（P〈0．01）。慢性特发性荨麻疹患者外周血Th1细胞含量、Th1／Th2比值均明显低于正常对照组（P〈0．01,P〈0．05）,Th2细胞含量高于正常对照组（P〈0．01）。结论：慢性特发性荨麻疹患者外周血存在着T及Th淋巴细胞亚群分化失衡,这可能为慢性特发性荨麻疹发病的机制之一。     

梗阻性大肠癌患者术前外周血细胞免疫水平检测及其临床意义

为观察梗阻性因素对大肠癌患者术前外周血细胞免疫水平的影响,探讨其对一期切除吻合术式选择的影响,我们使用流式细胞仪对21例梗阻性大肠癌患者、72例非梗阻性大肠癌患者术前3d内外周血T淋巴细胞亚群、自然杀伤（NK）细胞活性进行检测,并选取同期15名健康志愿者作为对照,进行对比分析。结果显示,与对照组相比,梗阻性大肠癌组和非梗阻性大肠癌组外周血CD3^＋、CD4^＋、CD4^＋／CD8^＋比值及NK细胞显著减少（P〈0．01）,CD8^＋细胞增多（P〈0．01）;但梗阻性大肠癌组T细胞亚群和NK细胞与非梗阻性大肠癌组相比,差异无统计学意义（P〉0．05）。结果表明,单从细胞免疫角度进行考虑,梗阻性因素并不影响对大肠癌患者行一期切除吻合术式的选择。     

自体CD3AK细胞过继免疫治疗原发性肺癌患者的护理

对45例原发性肺癌患者采用CD3AK细胞过继免疫治疗，结果治疗有效率为68．895，临床获益高达86．67%；患者一般情况良好，不适症状有所改善；患者T细胞亚群中CD8^＋细胞较治疗前显著下降（P〈0．05），CD3^＋、CD4^＋细胞和CD4^＋／CD8^＋比值均较治疗前显著升高（均P〈0．05）；治疗过程中仅有2例（4．44％）出现畏寒、发热。提出给予患者积极的心理护理，在治疗过程中严格无菌操作，加强细胞回输护理是保证治疗顺利开展、提高治疗效果的关键.     

结肠癌患者外周血 CD4+ CD25+调节性 T细胞检测的临床意义

目的 探讨结肠癌患者外周血CD4^＋CD25^＋调节性T细胞检测的临床意义。方法采用流式细胞技术对51例结肠癌患者和30例健康体检者外周血淋巴细胞CD4及CD25进行了检测。结果（1）结肠癌组CD4^＋CD25^＋细胞明显高于正常对照组（P〈0．05），CD4^＋CD25^＋细胞则显著低于正常对照组（P〈0．05）；（2）结肠癌组手术后患者CD4^＋CD25^＋、CD4^-CD25^＋细胞与手术前相比显著下降（P〈0．05）；（3）结肠癌组淋巴结转移患者CD4^＋CD25^＋细胞明显高于未转移组（P〈0．001）。结论CD4^＋CD25^＋调节性T细胞数可以反映肿瘤患者免疫系统存在抑制状态，且可能与肿瘤的免疫耐受有关，并可反映肿瘤淋巴结转移状况。     

自体外周血造血干细胞移植对弥漫性大B细胞淋巴瘤患者PD-1、B7-H1表达及T细胞亚群的影响

目的研究自体外周血造血干细胞移植（auto-PBSCT）对弥漫性大B细胞淋巴瘤（DLBCL）患者程序性死亡因子-1（PD-1）及其配体B7同系物1（B7-H1）表达及T细胞亚群的影响。方法选择浙江大学医学院附属第-医院血液科和温州市中心医院血液科2009年7月至2012年6月接受auto-PBSCT的27例DLBCL患者作为观察组,选择25例同期参加体检的健康人群作为对照组。流式细胞仪检测两组PD-1、B7-H1表达,并分析各组T细胞亚群。结果观察组移植后3个月PD-1阳性表达率低于初次诊断时[（4．6±1．0）％和（12．5±2．1）％],差异具有统计学意义（t=4．47,P〈0．05）。观察组两次检测结果均高于对照组,差异具有统计学意义（t=22．70和25．11,P均〈0．05）。观察组移植后3个月B7-H1阳性表达率低于初次诊断时[（5．7±1．4）％和（16．3±1．7）％],差异具有统计学意义（t=6．78,P〈0．05）。观察组两次B7-H1检测结果均高于对照组（t=25．15和38．06,P均〈0．05）。观察组移植后3个月CD3±T细胞百分比高于初次诊断时[（57±7）％和（44±4）％],差异具有统计学意义（t=6．29,P〈0．05）。观察组两次CD3±T细胞百分比检测结果均低于对照组（t=5．69和7．36,P均〈0．05）。观察组移植后3个月CD4＋T细胞百分比低于初次诊断时[（11±4）％和（29±3）％],差异具有统计学意义（t=5．47,P〈0．05）。观察组两次CD4＋T细胞百分比检测结果均低于对照组,差异具有统计学意义（t=4．61和7．11,P均〈0．05）。观察组移植后3个月CD8±T细胞百分比高于初次诊断时[（32．5±2．7）％和（16．4±3．2）％],差异具有统计学意义（t=9．73,P〈0．05）。与对照组相比,观察组初次诊断后CD8±T细胞百分比较低,而移植后3个月较高（t=10．62和14．71,P均〈0．05）。观察组初次诊断后CD4＋／CD8±比值高于移植后3个月（1．8±0．4和0．4±0．1）,差异具有统计学意义（t=8．57,P〈0．05）。移植后3个月CD4＋／CD8±比值明显低于对照组,差异具有统计学意义（t=11．73,P〈0．05）。结论DLBCL患者存在细胞免疫功能紊乱,auto-PBSCT可以影响DLBCL患者的PD-1、B7-H1表达及T细胞亚群百分比,在-定程度上纠正细胞免疫功能。     

他克莫司对肝移植受者外周血T淋巴细胞亚群及共刺激分子表达的影响

目的 探讨他克莫司（FK506）对肝移植受者外周血T淋巴细胞亚群及其表面共刺激分子表达的影响。方法 采用荧光标记单克隆抗体和流式细胞技术，测定术后采用FK506治疗的肝移植受者（FK506治疗组）在用FK506后1、2、3、4周时的外周血T淋巴细胞亚群及其表面共刺激分子CD28、CD152和ICOS分子的表达情况，以健康志愿者（健康对照组）和患终末期肝脏疾病拟行肝移植者（肝病对照组）为对照。结果 CD3^＋T淋巴细胞在各组间的差异均无统计学意义（P〉0．05）。经FK506治疗后，肝移植患者的CD4^＋T淋巴细胞逐渐减少，CD8^＋T淋巴细胞逐渐增加，并恢复至健康对照组水平（P〉0．05）。FK506治疗组T淋巴细胞亚群表面CD28分子和ICOS分子表达逐渐下降，并明显低于健康对照组（P〈0．05），而CD152分子表达增加，且明显高于健康对照组（P〈0．05）；其ICOS分子表达水平的下降晚于CD28分子，CD4^＋CD28^＋T淋巴细胞、CD8^＋CD28^＋T淋巴细胞和CD4^＋ICOS^＋T淋巴细胞均呈现相近的变化规律。结论 FK506能迅速纠正移植受者T淋巴细胞亚群紊乱，并抑制正性共刺激分子CD28和ICOS的表达，促进负性共刺激分子CD152的表达。     

术中应用右美托咪啶影响结直肠癌患者T淋巴细胞亚群和NK细胞活性的双盲随机临床试验

[摘要]目的观察术中应用右美托咪啶对结直肠癌患者围手术期外周血T淋巴细胞亚群及NK细胞活性的影响。方法选择40例择期结直肠癌手术患者,完全随机双盲分为两组：右美托咪啶组（D）组和对照组（C）组,每组20例。所有患者不用术前药,麻醉诱导前,采用正中人路穿刺法于L1／L2或T12／L1椎间隙置人硬膜外导管。D组：手术前15min静脉注射右美托咪啶1μg／kg,然后以0．5μg／（kg·h）速率持续输注至手术结束前30rain。C组：手术前15min以相同的速率静脉注射等容量的生理盐水。常规麻醉诱导,术后行硬膜外病人自控镇痛。分别于麻醉前（1D）、手术后24h（T1）、手术后48h（他）、手术后72h（T3）抽取静脉血应用流式细胞仪检测外周T淋巴细胞亚群（CD3、CIM、CD8、CD4／CD8）、NK细胞活性。结果①c组CD3、CD4、CIM／CD8在T1至仍点明显下降（P〈0．05）;D组CD3、CIM／CD8在T1点下降明显（P〈0．05）,CD4在T1、r12点下降明显（P〈0．05）;D组患者CD3、CD4、CD4／CD8在T1至T3点明显高于c组（P〈0．05）;CD8在Tl、亿点明显低于c组（P〈0．05）。②C组NK细胞在T1至r13点明显下降（P〈0．05）,D组NK细胞在T1、T2点明显下降（P〈0．05）;D组患者NK细胞在Tl至,13点下降程度不如C组明显（P〈0．05）（P〈0．05）。结论术中应用右美托咪啶,能够减轻围术期结直肠手术患者免疫功能抑制,对术后免疫功能有较好的保护作用。     

恶性肿瘤患者化疗及附加免疫治疗后淋巴细胞亚群的变化

目的：了解恶性肿瘤患者化疗和附加免疫治疗前后淋巴细胞亚群的变化及其临床意义。方法：利用流式细胞仪测定51例化疗前后和26例附加免疫治疗前后的淋巴细胞亚群及其活性。结果：化疗后1周患者CD3^ ,CD4^ 及NK细胞较化疗前明显降低（P＜0．05）,CD8^ ,CD19^ 细胞无明显变化（P＞0．05）,附加免疫治疗组治疗后1周CD8^ 及NK细胞较化疗前明显升高（P＜0．05及P＜0．01）,CD4^ 细胞,CD4^ /CD8^ 比值降低（P＜0．01）。结论：化疗对恶性肿瘤患者细胞免疫功能有明显抑制作用。附加免疫治疗对恶性肿瘤患者细胞免疫功能有明显改善作用。生物反应调节剂能增强化疗患者的细胞免疫功能,恶性肿瘤患者在化疗时应同时使用生物反应调节剂。     

直肠癌病人外周血NK细胞和T淋巴细胞亚群数目的变化及其临床意义

目的 探讨直肠癌病人外周血NK细胞和T淋巴细胞亚群的变化及临床意义。方法 分别应用同位素及流式细胞仪法检测26例正常人（无肿瘤）和35例直肠癌患者（包括术前术后）外周血NK细胞和T淋巴细胞亚群数目。结果 NK细胞,CD3,CD4,CD4／CD8比值在直肠癌组与对照组差异显著性（P＜0．05）。直肠癌患者随Dudes分期增高而NK细胞,CD3,CD4,CD4／CD8比值逐渐下降,差异均有极显著性（P＜0．01）。根治术和姑息性切除术后NK细胞CD3,CD4,CD4／CD8升高,CD8回落接近对照组。肿瘤未切除组术后NK细胞,CD3,CD4／CD8则进一步下降,差异有显著性（P＜0．05）。结论 直肠癌患者NK细胞等各项免疫指标大大降低,这种疫紊乱状态在不同病情又有显著差别,根治术和姑息性切除术可明显改善病人的免疫状态。     

慢性乙型肝炎病毒感染者外周血T细胞亚群及NK细胞的特点及意义

目的探讨慢性乙型肝炎病毒（hepatitis B virus,HBV）感染者外周血T细胞亚群及NK细胞的特点及临床意义。方法采用流式细胞术检测各研究组,包括慢性乙型肝炎（chronic hepatitis B,CHB）组33例、乙型肝炎失代偿期肝硬化（1iver cirrhosis,LC）组20例、慢性乙型重型肝炎（chronic severe hepatitis B,CSH）组17例及健康对照组（Control）20例的外周血T细胞亚群及NK细胞相对计数,并检测肝功能、HBVDNA含量及HBV血清标志物。结果按Control、CHB、LC、CSH顺序,CD3^＋T细胞、CD8^＋T细胞百分比依次升高,而CIM^＋T细胞、CD4^＋／CD8^＋比值及NK细胞百分比依次降低,且CHB、LC、CSH组与Control组及CHB组与CSH组相比,差异均有统计学意义（P〈0．05或P〈0．008）。CHB患者的CD3^＋T细胞与血清总胆红素（total bilirubin,TB）、HBVDNA含量（log_10）呈正相关（P〈0．001;P〈0．001）;CD8^＋T细胞与HBVDNA含量（log_10）呈正相关（P=0．007）,NK细胞与HBVDNA含量（log_10）（P=0．001）呈负相关。CHB组乙型肝炎e抗原（HBeAg）阳性者的CD4^＋T细胞及CD4^＋／CD8^＋比值低于HBeAg阴性者（P=0．018;P〈0．001）,而HBVDNA含量（log_10）和CD8^＋T细胞高于HBeAg阴性者（P=0．012;P=0．019）。结论慢性HBV感染者外周血T细胞亚群及NK细胞相对值紊乱,且与临床类型、病情、血清HBVDNA水平及HBeAg相关。     

The prognostic value of peripheral blood lymphocyte subsets in patients with bladder carcinoma treated using neoadjuvant M-VEC chemotherapy

OBJECTIVES: To assess the prognostic value of peripheral blood lymphocyte subsets in patients with bladder cancer who were treated with neoadjuvant chemotherapy. PATIENTS, SUBJECTS AND METHODS: Thirty patients with a histological diagnosis of invasive bladder transitional cell carcinoma and 30 age-matched controls with no evidence of cancer and immunological disorders were evaluated. Peripheral blood samples were assessed in both groups using monoclonal antibodies. Patients with bladder cancer who achieved complete or partial responses and those who had progression of the disease after systemic chemotherapy with methotrexate, vinblastine, epirubicin and cisplatin were compared according to the pretreatment values of the peripheral blood lymphocyte subsets. RESULTS: There were no significant differences in B lymphocyte levels between the groups. In patients with bladder cancer, the percentages of T lymphocytes (P<0.01), natural killer (NK) cells (P<0.05) and the CD4+/CD8+ ratio (P<0.05) were significantly lower than in the control group. In patients who responded to the chemotherapy regimen, the pretreatment values of T lymphocytes (P<0.001), the CD4+/CD8+ ratio (P<0.01) and NK cell levels (P<0.01) were significantly higher than in the patients who did not. CONCLUSION: In patients with invasive bladder carcinoma, cell-mediated immunity may have a role in the resistance to this malignancy and in these patients the pretreatment levels of T lymphocyte subsets may be an indicator of the potential response to chemotherapy.     

儿童肾病综合征T细胞亚群检测的临床意义

目的：探讨儿童原发性肾病综合征（NS）T细胞亚群检测的临床意义。方法：对25例NS活动期和缓解期患儿应用流式细胞仪检测T2细胞亚群的变化。结果：NS活动期组CD3^ ,CD4^ ,CD4^ /CD8^ 比值，NK[CD(16 56)]^ 细胞均明显低于缓解期组（P＜0．01）和对照组（P＜0．01）。结论：说明NS细胞免疫功能减低，T细胞亚群检测可作为肾病综合征活动指标之一。     

慢性肾脏病合并肺结核患者抗结核治疗转归相关因素分析

目的回顾性分析慢性肾脏病(CKD)合并肺结核患者的抗结核治疗转归相关因素。 方法纳入2017年1月至2021年6月我院收治的资料完整、CKD合并肺结核病患者84例，分析其一般情况、病史特点、化验指标、外周血淋巴细胞亚群、药物不良反应发生率，以及抗结核治疗转归相关因素。 结果84例患者中男性占76.54%，中位年龄53.5(41.25，63.00)岁。治疗有效组和无效组患者在性别、年龄、CKD分期、治疗史、吸烟史、糖尿病病史、高血压病史、γ干扰素(interferon-γ，IFN-γ)释放试验、结核抗体、白蛋白、肾功能、尿比重、尿蛋白、尿红细胞等方面比较无统计学差异。治疗无效组血红蛋白、总淋巴细胞计数、CD8⁺T细胞计数均低于有效组(P<0.05)。Logistic回归分析显示总淋巴细胞计数与治疗转归相关(P<0.05)。 结论CKD合并肺结核治疗无效组患者贫血重、CD8⁺T细胞计数及总淋巴细胞计数减少。总淋巴细胞计数减少与治疗转归差相关。     

体外循环心内直视手术对患者外周血白细胞中性粒细胞T淋巴细胞亚群影响

选择３０例择期心内直视术患者，治疗期间连续观察麻醉前后、术毕、术后第１、７、１４天其外周血白细胞、中性粒细胞、Ｔ淋巴细胞亚群变化，借以判断麻醉与体外转流手术后上述免疫参数变化，为及时防治心内直视术患者术后并发症提供实验依据。结果发现静吸复合麻醉近１ｈ后外周血淋巴细胞数急剧下降，术毕、术后第１至１４天外周血白细胞、中性粒细胞数及其所占百分率显著升高，而淋巴细胞数及其百分率则明显下降。Ｔ淋巴细胞亚群分析发现麻醉后ＣＤ＋３、ＣＤ＋４细胞及ＣＤ＋４／ＣＤ＋８比值明显下降，术毕、术后第１天进一步下降，至术后第７天或１４天恢复至麻醉前水平，这些参数变化是患者术后易并发感染等的原因之一。     

Correlation between radiculalgia and counts of T lymphocyte subsets in the peripheral blood of patients with lumbar disc herniation

Objective: To determine the correlation between the degree of radiculalgia and counts of T lymphocyte subsets in the peripheral blood of patients with lumbar disc herniation. Methods: Forty‐nine patients with lumbar disc herniation (group A) were divided into three subgroups according to Visual Analogue Scale (VAS) pain scores (group A₁: n= 12, VAS 0–4.0; A₂: n= 24, VAS 4.1–7.0; A₃: n= 13, VAS 7.1–10.0. Twenty health blood donors who volunteered to be involved in the study comprised the control group (group B). Peripheral blood counts of various T lymphocyte subsets were measured in each group. Results: (i) The counts of CD4+ T and CD4+/CD8+ lymphocytes were higher in group A than in group B, and the difference between the two groups was statistically significant (P < 0.05). There were also statistically significant differences between group A and group B in the counts of CD3+ and CD8+ T lymphocytes (P < 0.05); (ii) There was no correlation between the VAS scores and the counts of CD3+ T lymphocytes (r= 0.194, P > 0.05). A strong significant correlation was observed between the VAS scores and counts of CD4+ T lymphocytes (r= 0.542, P < 0.05), CD4+/CD8+ (r= 0.468, P < 0.05), which increased with increasing VAS scores in the three subgroups of group A (P < 0.05). However there was a significant negative linear correlation between CD8+ T lymphocyte counts and pain scores (r=?0.462, P < 0.05). Conclusion: Our results suggest that changes in T lymphocyte subsets in peripheral blood take place after prolapse of lumbar intervertebral discs. The current results may provide support for involvement of immunologic mechanisms in low back pain secondary to herniation of the lumbar disc. T lymphocytes may play an important role in the development of symptoms in patients with lumbar intervertebral disc herniation.     

清胰汤对呼吸机相关肺炎患者免疫功能的影响

目的:探讨中药清胰汤在改善呼吸机相关肺炎患者免疫功能中的应用。方法:将106例呼吸机相关肺炎患者随机分为常规治疗组(对照组)和清胰汤治疗组(研究组),分别于治疗前,治疗后第7 d、第10 d,采用流式细胞仪检测外周血T淋巴细胞亚群及NK细胞比例,运用ELISA和放射免疫法测定细胞因子IL-8、IL-17、髓过氧化物酶(MPO)浓度;并比较两组患者的治愈率、死亡率以及ICU住院时间。结果:研究组于治疗后第7 d、第10 d,CD4+T细胞、CD4+/CD8+、NK细胞百分率明显高于对照组(P<0.05),CD8+T细胞百分率明显低于对照组(P<0.05);IL-8、IL-17、MPO浓度显著低于对照组(P<0.05)。研究组治愈率明显高于对照组(P<0.05),死亡率显著低于对照组(P<0.05)。对照组和研究组ICU住院时间分别为(19.7±3.5)d、(12.2±2.7)d(P<0.05)。结论:清胰汤治疗可以显著改善呼吸机相关肺炎患者的免疫功能,减轻炎症和应激反应,提高临床疗效。     

Peripheral blood leukocyte kinetics following in vivo lipopolysaccharide (LPS) administration to normal human subjects. Influence of elicited hormones and cytokines.

Lipopolysaccharide (LPS, endotoxin) administration to human subjects elicits significant elevations in plasma cachectin/TNF, epinephrine, and cortisol. This study examined the temporal relationship between changes in blood leukocyte subsets and plasma mediators following endotoxin administration to normal human subjects. A five-minute intravenous infusion of purified LPS (20 units/kg Escherichia coli) was administered to 12 healthy volunteers. Blood samples were obtained at varying intervals after infusion and analyzed for differential cell counts and lymphocyte subsets (CD2, CD3, CD4, CD8, CD20, and HLA-DR) by flow microfluorimetry, and also assayed for plasma cachectin/TNF, epinephrine, and cortisol. Plasma cachectin/TNF was significantly elevated at 75 and 90 minutes after infusion with a peak concentration of 261 +/- 115 pg/ml noted 75 minutes after infusion. A significant plasma epinephrine elevation of 181 +/- 75 pg/ml was demonstrated one hour after infusion, while significant elevations in plasma cortisol were noted from one to five hours after infusion with a peak level of 34 +/- 3 micrograms/dl three hours after infusion. A profound monocytopenia (p less than 0.01) was noted one hour after infusion. Temporally associated with the rise in plasma cortisol was a reversal of the early granulocytopenia to a significant granulocytosis (p less than 0.01 versus preinfusion mean), whereas a marked lymphocytopenia (p less than 0.01) was observed from one to six hours after infusion. During the period of hypercortisolemia, CD2, CD3, and CD4 lymphocyte percentages were decreased (p less than 0.01) while CD20 and HLA-DR lymphocyte percentages were increased (p less than 0.01). There was a small percentage decrease in CD8 lymphocytes from one to 24 hours after infusion (p less than 0.01), although relative to the one-hour nadir, there was a significant rise in the percentage during the time of elevated plasma cortisol concentrations. A six-hour infusion of epinephrine (30 ng/kg/min) administered to six healthy volunteers resulted in a monocytosis (p less than 0.05) and granulocytosis (p less than 0.01) without a change in lymphocyte number or lymphocyte subset percentage. Previous reports have shown that in vivo corticosteroid infusion causes a prominent granulocytosis, monocytopenia, and lymphocytopenia with a decrease in the percentages of CD3 and CD4 lymphocytes. The peripheral blood leukocyte dynamics documented in the current study are similar to patterns observed following in vivo corticosteroid administration. This study suggests that the acute adrenocortical response to endotoxemia primarily mediates the subsequent changes in leukocyte subsets.     

A study of the relationship between type of lumbar disc herniation,straight leg raising test and peripheral T lymphocytes

Objective: To observe changes in peripheral T lymphocytes of patients with lumbar disc herniation, and investigate the relationship between the type of herniation, signs and T lymphocyte subsets. Methods: Blood samples from 20 healthy blood donors (control group), and 49 patients (27 male and 22 female) with single‐level lumbar intervertebral disc herniation were collected, the latter preoperatively. T lymphocytes subsets were detected by flow cytometer. According to the position of the intervertebral disc observed during surgery, the patients were divided into ruptured disc herniation (RDH) and degenerative disc herniation (DDH) groups. Straight leg raising (SLR) was assessed preoperatively. Results: Percentages of CD3+, CD4+, and ratio of CD4+/CD8+ in the RDH group were significantly higher, and of percentage of CD8+ significantly lower, than were those in the control group. Percentages of CD4+ and ratio of CD4+/CD8+ were significantly higher, and percentage of CD8+ significantly lower, in the positive SLR test group than were those in the negative SLR test group. The positive rate of SLR testing was significantly higher in the RDH than in the DDH group. Conclusion: Our results suggest that changes in T lymphocyte subsets in peripheral blood take place after herniation of the lumbar intervertebral disc. T lymphocyte mediated immune responses may play an important role in the occurrence and development of signs in patients with herniated lumbar intervertebral discs. The SLR test may help to confirm that disc herniation has caused nerve root impairment by mechanical loading or inflammatory stimulus and provide guidance on the choice of treatment.     

γ-射线对Smad 3基因剔除小鼠免疫功能影响的初步分析

目的:观察5．0 Gyγ-射线全身照射对Smad 3基因剔除小鼠免疫组织和外周血淋巴细胞亚群的影响及其机制。方法:应用TUNEL和FCM方法观察照射后不同Smad 3基因型小鼠胸腺、脾脏、淋巴结和外周血淋巴细胞亚群和淋巴细胞凋亡率的变化。结果:(1)照后Smad 3 / 、Smad 3 /-和Smad 3-/-三种基因型小鼠外周血WBC和淋巴细胞绝对数均迅速下降,直至照后10d均未恢复到对照组水平,而Smad 3-/-小鼠恢复速度较快。(2)三种基因型小鼠外周血CD3 细胞照后10d明显降低,分别约为对照组的40．2％、31．7％和49．3％,而CD8 细胞亚群的降低的更为明显,分别约为对照组的10．1％、10．6％和27．4％,Smad 3-/-小鼠降低的幅度小于Smad 3 / 和Smad 3 /-组。(3)小鼠胸腺和脾脏照射后T细胞亚群明显降低,而三种基因型小鼠中以Smad 3-/-小鼠各细胞亚群的降低幅度较小。(4)照后三种基因型小鼠CD19 细胞在免疫组织中降低的幅度不同,在淋巴结中CD19 细胞的降低更为明显。(5)照后小鼠淋巴细胞的凋亡率显著增加,然而无论是在外周血、胸腺,还是脾脏、淋巴结,三种基因型小鼠中均以Smad 3 / 淋巴细胞凋亡率的升高最为明显,而Smad 3-/-小鼠显示出相对的辐射不敏感性。结论:5．0 Gyγ-射线能诱发不同Smad 3基因型小鼠外周血和免疫组织淋巴细胞的明显凋亡,导致外周血WBC、淋巴细胞数量的明显减少和免疫细胞功能亚群的损伤;然而对多种指标观察的结果均首次表明, Smad 3基因敲除后导致了小鼠相对的辐射不敏感性,可能与TGF-β信号转导通路的抑制有关,其调节机制尚需进一步阐明。     

肺移植术后稳定状态受者T淋巴细胞亚群的动态变化分析

目的 分析肺移植术后稳定状态受者1年内T淋巴细胞亚群的动态变化及影响因素.方法 收集行同种异体肺移植手术且术后处于稳定状态的41例受者的临床资料.采用流式细胞术检测受者术前、术后2周及每个月(术后1年内)外周血T淋巴细胞亚群绝对值和比值.分析受者年龄、性别、体质量指数(BMI)、手术方式、原发性移植物功能障碍(PGD)...