检索结果-南通市图书馆

PEG-PLGA electrospun nanofibrous membranes loaded with Au@Fe2O3 nanoparticles for drug delivery applications

Frontiers of physics 2018年第1期13卷 65-73页

作者： salvatore spadaro Marco Santoro Francesco Barreca Angela Scala Simona Grimato Fortunato Neri Enza Fazio Dipartimento di Scienze Matematiche e Informatiche Scienze Fisiche e Scienze della Terra Universita di Messina Viale F. Stagno D'Alcontres 31 98166 Messina Italy Dipartimento di Scienze Chimiche Biologiche Farmaceutiche e Ambientali Universita di Messina Viale F. Stagno D'Alcontres 31 98166 Messina Italy

A PEGylated-PLGA random nanofibrous membrane loaded with gold and iron oxide nanoparticles and with silibinin was prepared by electrospinning deposition. The nanofibrous membrane can be remotely controlled and activated by a laser light or magnetic field to release biological agents on demand. The nanosystems were characterized using scanning electron microscopy, Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, and thermogravimetric analyses. The drug loading efficiency and drug content percentages were determined by UV-vis optical absorption spectroscopy. The nanofibrous membrane irradiated by a relatively low-intensity laser or stimulated by a magnetic field showed sustained silibinin release for at least 60 h, without the burst effect. The proposed low-cost electrospinning procedure is capable of assembling, via a one-step procedure, a stimuli-responsive drug-loaded nanosystem with metallic nanoparticles to be externally activated for controlled drug delivery.

关键词： Au@Fe2O3 nanoparticles PEG-PLGA copolymer pulsed laser ablation electrospinning,drug delivery

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Low utility of plasma Nociceptin/orphanin FQ in the diagnosis of hepatocellular carcinoma

引用

World Journal of Gastroenterology 2006年第29期12卷 4716-4720页

作者： Aldo spadaro Antonino Ajello Carmelo Luigiano Carmela Morace Maria Letizia Resta Grazia Berlinghieri salvatore Campo Claudio Scisca Angela Alibrandi Graziella D'arrigo Nunziata Alessi Oscar Ferraù Maria Antonietta Freni Dipartimento Clinico Sperimentale di Medicina e Farmacologia Clinica Medica Pad.CAOUVia Consolare Valeria No.1Messina 98125Italy

AIM： The utility of serum alpha-fetoprotein （α-FP） in the detection of hepatocellular carcinoma （HCC） is questionable. Very high circulating levels of nociceptin/ orphanin FQ （N/OFQ）, a ligand for a novel opioid receptor, have recently been reported in HCC. The aim of this study was to assess the role of plasma N/OFQ in the diagnosis of HCC arising in patients with liver cirrhosis. METHODS： Plasma N/OFQ levels were measured by ELISA in 58 patients （28 HCC and 30 liver cirrhosis） and in 25 healthy controls. The values were correlated with clinical and laboratory features including α-FP. Spearman index, biserial correlation coefficient, non parametric combination （NPC） test and discriminant stepwise analysis were used for statistical evaluation of data.RESULTS： The upper normal limit of nociceptin was 122 pg/mL. Plasma levels above this cut-off were found in 21.4% of patients with HCC, in 23.3% of those with cirrhosis and in 8% of healthy subjects. α-FP serum levels〉200 ng/mL were found in 46.4% of the patients with HCC and in none of those with cirrhosis. No correlation was found between N/OFQ levels and any of the clinical and laboratory features, including α-FP. By NPC test, HCC and cirrhotic patients were different with regard to α-FP （P = 0.000） but not in terms of nociceptin （P = 0.595）. By point biserial correlation, HCC presence was positively correlated with α-FP （rpb = 0.52, P = 0.000） but not with N/OFQ （rpb = 0.16, P = 0.157）. In a discriminant analysis, α-FP was significant in the Wilks test （Y = -0.709 ＋ 0.03 α-FP） and properly classified 81% of all patients and 61% of HCC. N/OFQ had lower sensitivity, specificity and predictive values than α-FP. CONCLUSION： Nociceptin is increased in patients with chronic liver disease, independently of the presence of HCC, although the underlying mechanism has yet to be clarified. We conclude it is not a useful marker for HCC.

关键词： Hepatocellular carcinoma Nociceptin/orphanin FQ Liver cirrhosis Alpha-fetoprotein

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：