Effect of thyrocytes from transgenic mice expressing thyroid specific MHC class Ⅱ on autologous T lymphocyte in vitro

Thyrocytes expressing MHC class Ⅱ molecules were separated from transgenic mice and were co-cultured with autologous spleen T lymphocytes. T cells did not proliferate and were not activated, but CD4+ T cells were promoted into apoptosis.     

拔除T管致胆汁性腹膜炎八例临床分析

我院自1998年1月至2008年12月收治T管拔除致胆汁性腹膜炎8例，占同期行胆总管探查T管引流术总例数的2．0％，现报告如下。     

Changes in T .lymphocyte subsets after severe traumatic brain inJury

BACKGROUND： Besides local changes of cranial parenchymal cells, hemorrhage, etc., severe traumatic brain injuries also cause the changes of total body fluid and various functions, and the changes of lymphocytes and T lymphocyte subsets should be paid more attention to. OBJECTIVE： To reveal the changing laws of T lymphocyte subsets after severe traumatic brain injury, and compare with mild to moderate brain injury. DESIGN： A comparative observation. SETTINGS： Department of Neurosurgery, Longgang District Buji People＇s Hospital of Shenzhen City; Central Laboratory of Shenzhen Hospital of Prevention and Cure for Chronic Disease. PARTICIPANTS： All the subjects were selected from the Department of Neurosurgery, Longgang District Buji People＇s Hospital of Shenzhen City from August 2002 to August 2005. Thirty patients with severe brain injury, whose Glasgow coma score （GCS） was ≤ 8 points, were taken as the experimental group, including 21 males and 9 females, aging 16 - 62 years. Meanwhile, 30 patients with mild traumatic brain injury were taken as the control group （GCS ranged 14- 15 points）, including 18 males and 12 females, aging 15 -58 years. All the subjects were in admission at 6 hours after injury, without disease of major organs before injury Informed consents were obtained from all the patients or their relatives. METHODS： （1） The T lymphocytes and the subsets in peripheral blood were detected with immunofluorescent tricolor flow cytometry at l, 3, 7 and 14 days after injury in both groups. （2） The conditions of pulmonary infections were observed at 4 days after injury. The differences of measurement data were compared with the t test. MAIN OUTCOME MEASURES： Changes of T lymphocytes subsets at 1 - 14 days after severe and mild or moderate traumatic injury. RESULTS： Finally, 28 and 25 patients with mild to moderate traumatic brain injury, whereas 25 and 21 patients with severe traumatic brain injury were analyzed at 7 and 14 days respectively, and the missed ones died due to the development of disease. （1） Changes of T lymphocyte subsets： At 1 and 3 days after injury, CD3, CD4, CD8, CD4/CD8 began to decrease, whereas CD8 increased in the experimental group, which were very significantly different from those in the control group （t =2.77 - 3.26, P 〈 0.01）, and began to recover at 7 days, which were significantly different from those in the control group （t = 2.06 - 2.24, P 〈 0.05）, and generally recovered to the normal levels at 14 days （P 〉 0.05）. （2） Conditions of pulmonary infections： At 4 days after injury, the rate of pulmonary infection was significantly different between the experimental group and control group [73% （22/30）, 0, x2=37.29, P 〈 0.01]. CONCLUSION： Patients with severe traumatic brain injury suffer from damages of cellular immune function at early period （within 7 days）, and they are easily to be accompanied by pulmonary infections.     

Mirrizi综合征48例治疗分析

目的：探讨Mirrizi综合征的早期有效治疗方法。方法：回顾性分析2001年5月∽2004年4月我院收治48例Minizi综合征患者，其中28例采用早期手术治疗，其余经保守治疗好转后改手术治疗，或保守治疗无效改手术治疗，并辅以抗炎、支持等治疗方法。结果：经早期手术治疗的患者疗效满意，预后较好。非早期手术者，有8例出现不同程度并发症，1例死亡。结论：Mirrizi综合征的早期手术治疗是必要的、可行的。     

肾综合征出血热血清甲状腺素变化的临床意义

本文通过20例肾综合征出血热(HFRS)37次血清T2、T4值的检测，并与20例健康献血者血清T3、T4检测值比较．发现发病早期(5病日内)各型HFRS血清T3值均低于正常组，中型、童型患者T4值与正常组比较有显著性差异(P＜0．05)．。T3、T4值，发热期出现降低，低血压休克期和少尿期下降最为明显，多尿期开始恢复，恢复期T3值接近正常，T4值反而升高，与对照组比较有非常显著性差异(P＜0．01)．提示，对HFRB患者进行血清T3、T4的检测，对HFRS的早期分型和判断预后有一定的临床意义。     

乳腺良恶性病变的磁共振T2*W首过灌注成像与血管生成相关性研究

Objective： To study the diagnostic value of T2^＊-weighted first-pass perfusion imaging in breast tumors. Methods： We analyzed the magnetic resonance imaging （MRI） information along with the pathological and immunohistochemistry results. Magnetic resonance imaging was performed in 28 patients with breast tumor. The time to signal intensity curves were generated according to the T2^＊-weighted first-pass perfusion imaging. The curve＇s maximal signal intensity drop rate and maximal signal intensity decrease time were analyzed and compared with the pathological diagnoses after surgery. Results： Malignant breast lesions showed higher maximal signal intensity drop rate （44.69% ± 17.07 vs. 17.22% ±7.49, P 〈 0.001） than benign lesions, but there was no significant difference of maximal signal decrease time between those two lesions （23.94 s ± 4.92 vs. 20.02 s ± 6.83, P 〉 0.05）. Conclusion： The T2^＊-weighted first-pass perfusion imaging has enough sensitivity and specificity in breast tumor diagnosis.     

内口切除管道引流术治疗低位肛瘘324例临床观察

1993年以来,采用内口切除、管道引流术治疗低位肛瘘32 4例,一次手术全部治愈。具有损伤小,疗效好的特点。     

HIV削弱CD8T细胞对其它病原体的应答

据Mdescape．com 8月11日报道（原载J Infect Dis2006：194：391—400），HIV和HCV联合感染的病人对由CD28细胞刺激CD8T细胞的应答比单独感染HCV的病人应答减少。     

Multi-parameter prediction of HLA class Ⅰ restricted cytotoxic T lymphocyte epitopes for human proliferating cell nuclear antigen

Objective To predict the HLA class Ⅰ restricted cytotoxic T lymphocyte epitopes for human proliferating cell nuclear antigen (PCNA). Methods By using 3 epitope prediction databases which including MHC binder ( BIMAS and SYFPEITHI databases) and proteasome cutting site ( PAProC databases), the epitopes of PCNA were predicted by analyzing several parameters and methods. Results After comprehensive analysis,we have obtained two possible HLA-A0201 restricted CTL epitopes SMSAD-VPLV (228-236, score 447 633. 595 ) and LINEACWDI ( 22-28, score 127 966.779);two HLA-A24 re-stricted CTL epitopos DYEMKLMDL ( 113-121, score 563 994.9 ) and EFARICRDL ( 143-151, score 40 540.7);two HLA-A1101 restricted CTL epitopes LTSMSKILK (72-80, score 1334. 2680 ) and DVPLV-VEYK (232-240,score 736.9236). Conclusion The multi-parameter epitope prediction method is feasi-ble for cytotoxic T lymphocyte epitope prediction.