Macrophage-hitchhiked arsenic/AB bionic preparations for liver cancer.

Macrophage-hitchhiked arsenic/AB bionic preparations were developed to improve the therapeutic effect on liver cancer by means of the tumor-targeting ability of macrophages . and cellular uptake assays demonstrated that arsenic/AB, with negatively charged particles of around 100-200 nm size, could hitchhike to macrophages. Dissolution experiments of arsenic/AB showed that arsenic/AB could delay the release of arsenic and ensure the safety of macrophages during its transport.

Lipid/PAA-coated mesoporous silica nanoparticles for dual-pH-responsive codelivery of arsenic trioxide/paclitaxel against breast cancer cells.

Nanomedicine has attracted increasing attention and emerged as a safer and more effective modality in cancer treatment than conventional chemotherapy. In particular, the distinction of tumor microenvironment and normal tissues is often used in stimulus-responsive drug delivery systems for controlled release of therapeutic agents at target sites. In this study, we developed mesoporous silica nanoparticles (MSNs) coated with polyacrylic acid (PAA), and pH-sensitive lipid (PSL) for synergistic delivery and dual-pH-responsive sequential release of arsenic trioxide (ATO) and paclitaxel (PTX) (PL-PMSN-PTX/ATO).

[Preparation and evaluation of arsenic trioxide glioma targeting drug delivery system loaded by PAMAM dendrimers co-modified with RGDyC and PEG].

Arsenic trioxide (ATO) is an effective component of traditional Chinese medicine arsenic. The existing studies have shown its good inhibition and apoptosis ability on a variety of tumours. However, its toxicity and difficulties in the permeability into the blood brain barrier (BBB) has the limitation in the application of glioma treatment.

Targeted drug delivery for tumor therapy inside the bone marrow.

Bone marrow is the primary hematopoietic organ, which is involved in multiple malignant diseases including acute and chronic leukemia, multiple myeloma, myelodysplastic syndromes, and bone metastases from solid tumors. These malignancies affect normal homeostasis and reshape the bone marrow microenvironment. There are limited treatment options for them because of their inevitable aggravation.

Preparation of mixed monoterpenes edge activated PEGylated transfersomes to improve the in vivo transdermal delivery efficiency of sinomenine hydrochloride.

Surfactants generally have been used as edge activators of transfersomes. However, surfactants edge activated transfersomes frequently lead to cutaneous irritation, skin lipid loss and other side effects after dermal administration. In this study, mixed monoterpenes edge activated PEGylated transfersomes (MMPTs) were prepared by ethanol injection process with sinomenine hydrochloride as a model drug.

[Optimization of Formulation of Panax notoginseng Saponins Transfersomes].

Objective: To optimize the formulation of Panax notoginseng saponins (PNS) transfersomes.

Methods: PNS transfersomes were prepared by film hydration-dispersion process. Based on the entrapment efficiency (EE) of ginsenoside Rg1 and ginsenoside Rb1, the effects of formulated quantity of sodium deoxycholate and cholesterol, the relative ion strength and pH value of hydration liquid were investigated.

[Determination of vitexin-rhamnoside in Beagle dog plasma and preliminary pharmacokinetics of Yixintong sustained release tablets].

Objective: To develop an HPLC method to determine vitexin-rhamnoside in plasma of Beagle dogs and study the pharmacokinetics and bioavailability of Yixintong sustained release tablets in Beagle dogs.

Method: A newly-developed HPLC method using C18 column and methanol-acetonitrile-tetrahydrogenfuran-0.5% acetic acid (1:1:19.

[Preparation of ondansetron hydrochloride osmotic pump tablets and their in vitro drug release].

Aim: To prepare ondansetron hydrochloride osmotic pump tablets (OND-OPT) and investigate their in vitro drug release behavior.

Methods: OND-OPT were prepared with a single punch press and pan coating technique. Osmotic active agents and plasticizer of coating film were chosen by drug release tests.

[Research progress on oral prolonged-release preparation of traditional Chinese medicine].

This paper reviews the lastest progress on oral prolonged-release preparation of traditional Chinese medicine. Four materials, include component, effective parts, single drug, and compound drugs of traditiong Chinese medicine, have been used to produce oral prolonged-release preparation. The main contents are study of preparation and evaluation of in vitro release.