ABSTRACT
Two compounds were isolated from 95% ethanol extract of the gum resin of Boswellia carterii by silica gel column chromatography (CC) and high-performance liquid chromatography (HPLC). Their structures were identified with IR, UV, NMR and HR-ESI-MS spectroscopic data as 7α-hydroxy-3,11-dioxo- tirucalla-8,24-dien-21-oic acid (1) and 21β-hydroxy-3-acetyl-11-keto-β-boswellic acid (2). In addition, their absolute configurations were also identified by ECD calculations. Among them, compound 1 is a new compound and the absolute configuration of compound 2 is confirmed by ECD calculation for the first time.
ABSTRACT
<p><b>OBJECTIVE</b>To explore the clinical effects of VSD combined with continual irrigation in treating the infection of limbs fracture after internal fixation.</p><p><b>METHODS</b>From March 2010 to June 2015, 10 patients with infection of limbs fracture after internal fixation were treated with VSD combined with continual irrigation. There were 7 males and 3 females, aged from 11 to 58 years with an average of 34.4 years. Course of disease was from 1 to 8 months with an average of 4.8 months. Postoperative infection occurred in fractures of ulna and radius of 4 cases, tibiofibular fractures of 3 cases, calcaneal fractures of 2 cases, femoral fractures of 1 case. Eight infections were open fracture and 2 infections were close fracture. In additon to above treatment, antibiotics, dressing changing or skingrafting were used in the patients. Informations of wound surface healing, change dressings, original infection focus were observed.</p><p><b>RESULTS</b>All infections got control, the wound healing after change dressings or skingrafting, and no complications such as osteomyelitis were found. The mean treatment time was 38.4 days(ranged, 29 to 45 days) and replacement times was 2.2 times(ranged, 1 to 4 times). All patients were followed up, no recurrent infections were found at 1 year after fracture healing.</p><p><b>CONCLUSIONS</b>VSD combined with continual irrigation can effectively decrease the incidence of complications and promote the wound growth, healing and considerably shorten the healing time. It is an effective method for the treatment of infection of limbs fracture after internal fixation.</p>
ABSTRACT
<p><b>OBJECTIVE</b>To study the efficacy of gene therapy with human vascular endothelial growth factor-c (VEGF-C) on obstructive lymphedema.</p><p><b>METHODS</b>Two animal models of lymphedema were created: one in the right hind limb of adult New Zealand white rabbits and the other in SD mouse tail. Each model was randomly divided into two groups to receive intradermal injection of either VEGF-C gene (experimental group), or saline(control group). In rabbit model, the volume change of affected limb was measured. In mouse model, biopsy was performed after 3 weeks treatment to detect the expression of VEGF-C mRNA and proteins. The lymphagenesis was evaluated by immunohistochemical examination with lymphatic endothelium hyaluronan receptor antibody.</p><p><b>RESULTS</b>The volume of the affect rabbit limb decreased by (24.40 +/- 1.08) ml in experimental group, compared with (5.80 +/- 1.92) ml in control group (P = 0.0001). The expression of VEGF-C mRNA and protein increased markedly in experiment group, but not in controls. More lymphatic vessels with large caliber were seen in experiment group (P = 0.0004).</p><p><b>CONCLUSIONS</b>VEGF-C gene therapy may alleviate or treat lymphedema by inducing lyphmangiogenesis.</p>