穿透性角膜移植术后角膜内皮细胞之命运

地２组猴行５。５→５．０ｍｍ穿透性角膜移植术，异种组４只，同种组４只，术前用冷冻创伤＾３Ｈ－ＴｄＲ标记法标记受生角膜内皮细胞，术后１４周摘除眼球，用放射自显影法显示银颗粒的分布。     

Monitoring the protective effects of minocycline treatment with radiolabeled annexin V in an experimental model of focal cerebral ischemia.

Minocycline is an antibiotic now recognized to have antiapoptotic and antiinflammatory properties. Because of these properties, minocycline may be of benefit in reducing neuronal apoptosis from ischemia and subsequent postischemic inflammation if administered soon after a stroke. We now explore the feasibility of using (99m)Tc-annexin V, an in vivo marker of apoptosis, with SPECT to monitor the antiapoptotic effects of minocycline therapy. METHODS: CB6/F1 adult male mice underwent unilateral distal middle cerebral artery occlusion (dMCA) occlusion and were imaged and sacrificed at 1, 3, 7, or 30 d after injury. Animals were given minocycline (or vehicle) 30 min and 12 h after dMCA occlusion and then given 22.5 mg/kg twice daily for up to 7 d. Before imaging, behavioral tests were performed to evaluate the neurologic function. After imaging, brains were collected for histology and assessed for the degree of apoptosis and microglial activation. RESULTS: (99m)Tc-Annexin V uptake in injured hemispheres was significantly decreased 2- to 3-fold by minocycline at all time points. Minocyline reduced infarct size as seen histologically and improved behavioral indices as late as 30 d. Infarct volume as seen histologically correlated with radiolabeled annexin V uptake seen by SPECT. In situ fluorescent microscopy demonstrated that annexin V bound primarily to neurons at 1 and 3 d, with a shift toward microglia by 7 and 30 d. CONCLUSION: We found that minocycline significantly reduces neuronal apoptosis and infarct size and improves neurologic outcome in mice after acute focal cortical ischemia.     

非首剂服用吡喹酮后致全身皮肤过敏1例

1 病例资料 患者 胡某，男，50岁，渔民，江西省余干县瑞洪镇胡宋村人。常年在鄱阳湖捕鱼，每年服用吡喹酮至少1次，已连续服用七八年，未曾出现不良反应。2006年10月，无明显诱因出现发热，体温38℃左右，无腹痛、畏寒等，经当地医院B超检查发现胆囊息肉，抗炎治疗5d，体温未退。查间接血凝试验（IHA）、酶联免疫吸附试验（ELISA）均阳性，     

牛磺酸在防治老年病中的应用及其药理机制

牛磺酸(taurine,Tau) 又名为牛胆酸、牛胆素,是名贵中药"牛黄"的主要功效成分之一,化学名为2-氨基乙磺酸(2-Aminoethyanesulfonicacid),分子结构式见图1.牛磺酸最早于1827年从雄牛的胆汁中分离得到并得名,1975年Hayes等[1]报道牛磺酸为猫和早产儿的必需营养物质,此后国际上对牛磺酸进行了大量的研究.本文就牛磺酸的生化性质及防病抗衰功效做一综述,并提出笔者对牛磺酸药理作用的独特的生化诠释.     

增生性玻璃体视网膜病变基质金属蛋白酶的定量研究

目的:研究增生性玻璃体视网膜病变(proliferative vitreoretinopathy,PVR)玻璃体中基质金属蛋白酶(matrix metalloproteinases,MMPs)的表达,探讨MMPs在PVR病理过程中的作用。方法:PVR患者采用标准三切口巩膜扁平部玻璃体切割术(pars plana vitrectomy,PPV),取未稀释的玻璃体21只眼,PPV术后复发的玻璃体腔液20只眼,意外死亡的正常人玻璃体10只眼,采用明胶酶谱分析法定量分析MMP-2和MMP-9活性水平。结果:PVR玻璃体有MMP-2活性水平增高,与正常玻璃体比较差异有显著性意义(P<0.05)。21眼PVR玻璃体中13只眼有MMP-9活性水平增高,平均(171.52±13.17)扫描单位。20眼PPV术后PVR复发的玻璃体腔液19只眼有MMP-9活性水平增高,平均(156.01±37.21)扫描单位。正常人玻璃体无MMP-9的表达。结论:PVR玻璃体有MMP-2和MMP-9活性水平增高,MMP-9活性水平增高可能与术后PVR复发有关。眼科学报2003;19:130-132。     

Dynamic observations on NK cell activity and IL-2 and IFNγ productionin vitro in patients on maintenance hemodialysis

Summary In order to study the immune function of patients on maintenance hemodialysis (MHD), we assayed NK cell cytotoxicity against K⁵⁶² targets in 40 patients on MHD, and the production of IL-2 and IFN in peripheral blood mononuclear cells (PBMC) after PHA stimulation, in contrast to those in normal controls. The results showed that NK cell activity and IL-2 and IFN levels were markedly lower in the patients than in the controls. Afeter a single dialysis, NK cell activity as well as IL-2 and IFN levels were elevated to different extent. But there was no significant change in patients after long-term dialysis. There was a positive correlation between the NK cell activity and IL-2 and IFN activity in the controls, but no such correlation was found in the patients on MHD. There was a positive correlation between the NK cell activity and IL-2 activity in patients after dialysis, suggesting that immune function were impaired in the patients on MHD, with a decline in the activity of NK cell and IL-2 and IFN, and a disorder of immune regulation cycle. These abnormal immune impairments in the patients could be partly corrected by hemodialysis. However, long-term hemodialysis is not much helpful in the improvement of patient’s immune function.     

Effects ofTripterygium hypoglaucum (Lévl.) Hutch on male fertility

Tripterygium hypoglaucum (Lévl.) Hutch (TH) is a perennial used in Chinese traditional medicine for the treatment of rheumatoid arthritis and various skin disorders. One study showed that daily oral doses of TH significantly reduced the fertility of male rats without apparent toxicity. The effects of daily oral doses of TH on the fertility of men taking it for the treatment of rheumatoid arthritis were evaluated. Sperm concentration, motility and motility grade all were significantly reduced in the 13 men taking TH compared to 11 untreated controls. TH therapy did not affect testosterone, FSH, LH levels, and its antifertility effects appeared to be reversible.

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Resumen Triperygium hypoglaucum (Lévl.) Hutch (TH) es una perenne usada en la medicina tradicional china para el tratamiento de artritis reumatoidea y de varios desórdenes de la piel. Un estudio demostró que orales diarias de TH reducían significativamente la fertilidad en ratas macho, sin toxicidad aparente. Se evaluaron los efectos de dosis diarias orales de TH en la fertilidad de hombres que le tomaban para el tratamiento de la artritis reumatoidea. La concentración de espermatozoides, la motilidad y el grado de motilidad, se encontraron significativamente reducidos en los 13 hombres tomando TH comparados con 11 controles no tratados. La terapia con TH no afectó los niveles de testosterona, FSH y LH y sus efectos antifertilidad parecían ser reversibles.

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Resumé LeTriperygium hypoglaucum Hutch (TH) est communément utilisé en médecine traditionnelle chinoise pour le traitement de la polyarthrite chronique évolutive (PCE) et de divers troubles cutanés. Une étude a montré que l'administation quotidienne de doses orales de TH réduisait considérablement la fécondité de rats mâles sans provoquer de toxicité apparente. On a évalué les effets de doses quotidiennes administrées par voie orale sur la fécondité d'hommes atteints de PCE et traités au TH. La concentration, la motilité et le degré de motilité du sperme avaient significativement diminué chez 13 hommes traités au TH par comparaison avec 11 témoins non traités. Le traitement au TH n'a eu aucun effet sur les niveaux de testostérone, FSH et LH et ses effets anti-fécondants semblent être réversibles.

     

高危新生儿脑干听觉诱发电位的近期观察

目的 为了解高危新生儿脑干及听觉功能障碍情况.方法 于1995年8月～1996年1月对128例高危新生儿进行脑干听觉诱发电位(Anditory Brainstem Responses—ABR)测定.结果 急性期高危新生儿ABR异常率为51.4%,其中高胆红素血症,低体重儿,窒息和丁胺卡那霉素应用组ABR异常率分别为61.1%、66.7%、53.8%和 2.8%.血清胆红素(Sb)值>290.7μmol/L和重度窒息儿ABR异常率明显高于Sb<290.7μmol/L和轻度窒息儿.早产儿和足月小样儿ABR异常率无明显差异.丁卡组对听阀的近期影响不大.结论 高危新生儿是脑干和听觉功能障碍的高危人群,应当密切随防和早期干预.