Novel phenazine-based microporous organic network for selective and sensitive determination of trace sulfonamides in milk samples.

Background: Sulfonamide (SA) residues in food of animal origin possess a potential threat to human health and environment. However, due to the polar and ionic characteristics and trace level of SAs and the complexity of food matrices, direct measurement of SAs in these samples is still very difficult. Development of efficient sample pretreatment method for sensitive and selective extraction of trace SAs is of great significance and urgently desired.

Preparation of cationic microporous organic network for efficient solid-phase extraction of nonsteroidal anti-inflammatory drugs from environmental water and milk samples.

The overuse of nonsteroidal anti-inflammatory drugs (NSAIDs) poses many serious environmental and food safety concerns. Development of effective and sensitive sample pretreatment method for monitoring trace NSAIDs from complex samples is of great significance. Depending on the ionic and aromatic structures of NSAIDs, a cationic microporous organic network (MON) named TEPM-BBDC with large specific surface area, good solvent and thermal stabilities, and numerous interaction sites was designed and prepared for efficient solid-phase extraction (SPE) of four typical NSAIDs (flurbiprofen, ketoprofen, naproxen, and diclofenac sodium) from environmental water and milk samples.

Allogeneic bone marrow mesenchymal stem cell transplantation in patients with UDCA-resistant primary biliary cirrhosis.

The objective of this study was to evaluate the safety and efficacy of allogeneic bone marrow mesenchymal stromal/stem cell transplantation (BM-MSCT) for patients with ursodeoxycholic acid (UDCA)-resistant primary biliary cirrhosis (PBC). Ten patients were enrolled in this trial of BM-MSCT. All patients were permitted to concurrently continue their previous UDCA treatment.

[Baseline analysis of refractory primary biliary cirrhosis].

Objective: To summarize the clinical characters of refractory primary biliary cirrhosis (PBC) versus typical ones and explore the risk factors of prognosis.

Methods: From 2009 to 2011, 60 PBC patients on the therapy of ursodeoxycholic acid (UDCA) over 1 year at our clinic were recruited. According to the response to UDCA by the Paris criteria, they were divided into refractory group (n = 23) and typical group (n = 37) to analyze the basic clinical conditions, biochemical markers, antibodies and liver biopsies.

[Expression of serum hepatocyte growth factor in patients with acute renal failure].

Objective: To investigate the changes of serum hepatocyte growth factor (HGF) in patients with acute renal failure (ARF) and to evaluate the clinical value.

Methods: Serum HGF levels were determined by ELISA in 31 patients with ARF at the stages of oliguria, polyuria and convalescence and in 28 healthy controls.

Results: Compared with the controls, the HGF levels in the serum increased significantly in the ARF group at the stages of oliguria and polyuria, while the serum HGF returned to normal levels at the convalescence stage.