Synthesis of a Cd-MOF Fluorescence Sensor and Its Detection of Fe, Fluazinam, TNP, and Sulfasalazine Enteric-Coated Tablets in Aqueous Solution.

A Cd-based metal-organic framework (Cd-MOF), named after {[Cd(ttc)(HO)]·HO} (ttc = 1-imidazole-1-yl-2,4,6-benzene-tricarboxylic acid), was synthesized using the solvothermal reaction. The single-crystal structure was determined by single X-ray diffraction analysis, and crystalline characteristics and composition were confirmed by powder X-ray diffraction (PXRD) and thermogravimetric analysis (TG), respectively. Structural analysis showed that the Cd ion is in the seven-coordinated mode, in which ttc ion adopts the μ-η-η-η-η coordination mode.

Efficacy and safety of placing nasoenteral feeding tube with transnasal ultrathin endoscope in critically ill patients.

Background: The placement of an enteral feeding tube is the foundation for providing enteral nutrition. But due to the anatomic complexity of the stomach and the duodenum, to a certain degree, there are some technical difficulties in the placement of postpyloric feeding tube, especially in critically ill patients. This study aimed to evaluate the efficacy and safety of placing nasoenteral feeding tube with a transnasal ultrathin endoscope.

[Application endoscopic mucosal resection to therapy early gastrointestinal cancer and precancerous lesion].

Objective: To explore the clinical value of endoscopic mucosal resection (EMR) on early gastrointestinal cancer and precancerous lesion.

Methods: The EMR data of 42 lesions from 28 patients, collected from Apr. 2001 to Dec.

Effects of folic acid on epithelial apoptosis and expression of Bcl-2 and p53 in premalignant gastric lesions.

Aim: To evaluate the effects of folic acid on epithelial apoptosis and expression of Bcl-2 and p53 in the tissues of premalignant gastric lesions.

Methods: Thirty-eight patients, with premalignant gastric lesions including 18 colonic-type intestinal metaplasia (IM) and 20 mild or moderate dysplasia, were randomly divided into a treatment group (n = 19) receiving folic acid 10 mg thrice daily and a control group (n = 19) receiving sucralfate 1,000 mg thrice daily for 3 mo. All patients underwent endoscopies and four biopsies were taken prior to treatment and repeated after concluding therapy.

Construction and high-level expression of a single-chain Fv antibody fragment specific for acidic isoferritin in Escherichia coli.

A functional single-chain Fv antibody fragment (scFv) specific for acidic isoferritin (AIF) was produced at high level in Escherichia coli. The variable regions of heavy chain (V(H)) and light chain (V(L)) from the hybridoma 4c9 were connected with a flexible linker using an assembly polymerase chain reaction. The construct of V(H)-linker-V(L) was inserted into a phagemid pCANTAB 5 E followed by selection with the Recombinant Phage Antibody System (RPAS).