Indocyanine green loaded hyaluronan-derived nanoparticles for fluorescence-enhanced surgical imaging of pancreatic cancer

Pancreatic ductal adenocarcinoma is highly lethal and surgical resection is the only potential curative treatment for the disease. In this study, hyaluronic acid derived nanoparticles with physico-chemically entrapped indocyanine green, termed NanoICG, were utilized for intraoperative near infrared fluorescence detection of pancreatic cancer. NanoICG was not cytotoxic to healthy pancreatic epithelial cells and did not induce chemotaxis or phagocytosis, it accumulated significantly within the pancreas in an orthotopic pancreatic ductal adenocarcinoma model, and demonstrated contrast-enhancement for pancreatic lesions relative to non-diseased portions of the pancreas. Fluorescence microscopy showed higher fluorescence intensity in pancreatic lesions and splenic metastases due to NanoICG compared to ICG alone. The in vivo safety profile of NanoICG, including, biochemical, hematological, and pathological analysis of NanoICG-treated healthy mice, indicates negligible toxicity. These results suggest that NanoICG is a promising contrast agent for intraoperative detection of pancreatic tumors.     

Experimental basis of standardized specimen collection: the effect of the site of venipuncture on the blood picture, the white blood cell differential count, and the serum albumin concentration

The effect of the specimen collection site on blood picture and WBC differential count was investigated in 13 and 25 volunteers, respectively. Lower values were found for the mature neutrophils and higher monocyte values in ear and finger blood compared to venous blood. There were no statistically significant differences in the WBC differential count values found in the ear and finger specimens. A higher S-Alb concentration was found in ear and finger specimens compared to venous blood. The average WBC concentration was higher in the ear and finger specimens than in the venous blood (7.66 x 10(9)/l, 7.11 x 10(9)/l and 6.88 x 10(9)/l, respectively). Also the platelet concentration exhibited a statistically significant difference, the mean concentrations being 273 x 10(9)/l, 260 x 10(9)/l and 231 x 10(9)/l in the vein, finger and ear specimens, respectively. The differences found are partly explained by peripheral ultrafiltration of intravascular fluid, leading to haemoconcentration, and partly by the different properties of different white blood cells. In conclusion, the specimens for blood picture and WBC differential count should always be obtained from the same site, especially in follow-up cases.     

Usefulness of underwater endoscopic submucosal dissection in saline solution with a monopolar knife for colorectal tumors (with videos)

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C-反应蛋白在妇科疾病中的临床应用

目的:探讨血中C-反应蛋白(CRP)的检测对妇科炎症疾病与非炎症疾病的鉴别诊断和疗效判断价值。方法:检测125例患者血中CRP含量及白细胞计数(WBC)。结果:通过对125例妇科患者血中CRP检测,表明炎症性疾病与非炎症性疾病CRP含量有显著性差异。盆腔炎患者中CRP的敏感性明显高于白细胞计数的敏感性;盆腔炎患者治疗前后CRP和WBC的比较,CRP变化较之WBC变化更符合临床治疗效果。结论:血CRP的检测有助于妇科炎症性疾病与非炎症性疾病的鉴别诊断,动态检测其变化对疗效判断有实用价值。     

重组人成骨生长肽对化疗小鼠白细胞减少的影响

目的 研究重组人成骨生长肽(rhOGP)对环磷酰胺(Cy)化疗损伤小鼠白细胞减少的影响;观察rhOGP对人肺腺癌Anip细胞和人胃癌SGC-7901细胞增殖的影响.方法 用Cy腹腔注射每日100mg/kg,连续3d,造成小鼠的化疗损伤模型.拮抗实验中,分别给予低、高剂量的rhOGP,连续13d,采用皮下注射给药途径,于第0d、第4d(Cy造模后)、第9d、第14d检测外周血白细胞(WBC)数变化.预防实验中,分别给予rhOGP、DTT与生理盐水,连续10d,并于第8、9、10d同时给予Cy,分别于实验前、实验后记取外周血WBC数.利用MTT法和细胞生长曲线观察rhOGP对人肺腺癌Anip细胞和人胃癌SGC-7901细胞增殖的影响.结果 rhOGP能促进Cy损伤小鼠WBC数的恢复,高、低剂量组间略有差异.rhOGP能明显降低Cy损伤小鼠外周血白细胞减少的幅度.rhOGP对人肺腺癌Anip细胞及人胃癌SGC-7901细胞的增殖无明显促进作用.结论 rhOGP可促进Cy损伤小鼠外周血白细胞的恢复,rhOGP对Cy化疗小鼠白细胞数减少有预防作用,且对人肺腺癌Anip细胞和人胃癌SGC-7901细胞的增殖无促进作用,提示rhOGP作为肿瘤治疗辅助用药的潜在价值.     

The thymus and activation-regulated chemokine (TARC) level in serum at an early stage of a drug eruption is a prognostic biomarker of severity of systemic inflammation

Background

In severe drug eruptions, precise evaluation of disease severity at an early stage is needed to start appropriate treatment. It is not always easy to diagnose these conditions at their early stage. In addition, there are no reported prognostic biomarkers of disease severity in drug eruptions. The aim of this study was to test whether the thymus and activation-regulated chemokine (TARC) level in serum at an early stage of a drug eruption can serve as a prognostic biomarker of systemic inflammation.

冠心病并2型糖尿病患者超敏C反应蛋白与白细胞水平的变化

目的 探讨高敏C反应蛋白与白细胞水平的变化在不同冠心病患者中的意义.方法 入选我院冠状动脉造影且确诊为冠心病的患者120例,按有无糖尿病分为单纯冠心病组78例,冠心病合并2型糖尿病组42例.抽取晨起空腹肘静脉血,测定白细胞计数(WBC)、总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)及空腹血糖(FPG),采用高敏免疫检测方法检测血浆hs-CRP水平.结果 冠心病并2型糖尿病组hs-CRP、白细胞计数和空腹血糖显著高于单纯冠心病组.结论 hs-CRP、白细胞计数和空腹血糖是冠心病合并2型糖尿病患者的独立危险因素,炎症过程参与了疾病的发生发展.