Immunoglobulin G4-related disease in the sigmoid colon in patient with severe colonic fibrosis and obstruction: A case report.

Background: Immunoglobulin G4-related disease (IgG4-RD) is an immune-mediated condition characterized by abundant IgG4 positive plasma cells and fibrosis in the affected tissues. It affects most parts of the body; however, there are not many reports on IgG4-RD involving the colon.

Case Summary: A 50-year-old man complaining of intermittent fever for more than two years was referred to our hospital.

Role stress, social support and occupational burnout among physicians in China: a path analysis approach.

Background: Occupational burnout in physicians is prevalent and can have many negative effects. The purposes of this study were to explore the prevalence of occupational burnout and to analyze the effects of social support and role stress on occupational burnout among Chinese physicians.

Methods: Using multistage-stratified cluster random sampling, physicians were selected to participate in the study and completed three questionnaires: the Chinese Maslach Burnout Inventory; the Cross-Cultural Role Conflict, Ambiguity and Overload Scale; and the Social Support Rating Scale.

Synthesis and Fluorescent Property Study of Novel 1,8-Naphthalimide-Based Chemosensors.

A series of novel mono- and di-substituted -n-butyl-1,8-naphthalimide derivatives were synthesized simultaneously via a three-step reaction. The single crystal structure of -n-butyl-4-[','-bis(2',4'-dichlorobenzoyl)ethylamino]-1,8-naphthalimide () was determined. The UV-vis and fluorescence properties of compound were investigated.

Preparation and chiral recognition in HPLC of cellulose 3,5-dichlorophenylcarbamates immobilized onto silica gel.

The 3,5-dichlorophenylcarbamates (2) of cellulose bearing a small amount of 3-(triethoxysilyl)propyl residues were synthesized by a one-pot process and immobilized onto a silica gel through intermolecular polycondensation of the triethoxysilyl groups. The obtained cellulose derivatives were characterized by (1) H NMR and elemental analysis (EA), and their recognition abilities were evaluated by high-performance liquid chromatography (HPLC). The cellulose derivatives containing about 1-5% of the 3-(triethoxysilyl)propyl residue were efficiently immobilized with a high chiral recognition ability.