OBJECTIVE To evaluate the risk factors, therapy and prognosis of multi-drug resistant Pseudomonas aeruginosa infection. METHODS We made retrospective study of multi-drug resistant P. aeruginosa infection cases from Jan 2000 to Dec 2004 proved by samples tests. RESULTS Thirty four cases were infected by multi-drug resistant P. aeruginosa, 29 cases were with hospital infection. Among the 34 cases infected by multi-drug resistant P. aeruginosa, the mortality was 67.7%. There were 34 cases concomitant with 1-5 kinds of underlying diseases. There were 26 cases infected with more than 2 kinds of bacteria. CONCLUSIONS Multi-drug resistant P. aeruginosa infection mostly happens in old men, incorporated with underlying diseases and mixed bacterial infection .

Six crystalline components were isolated from the lipophilic fraction of Artemisia annua L. They have been identified as four sesquiterpenes, one flavonol and one coumarin. Qinghaosu I and III are new sesquiterpenes. Five main constituents, camphene, iso-artemisia ketone, 1-camphor, β-carophyllene, and β-pinene were identified from the volatile oil of this herb.
Artemisia annua ; chemistry ; Artemisinins ; chemistry ; isolation & purification ; Bridged Bicyclo Compounds ; chemistry ; isolation & purification ; Camphor ; chemistry ; isolation & purification ; Monoterpenes ; chemistry ; isolation & purification ; Oils, Volatile ; chemistry ; Sesquiterpenes ; chemistry ; isolation & purification ; Terpenes ; chemistry ; isolation & purification

Objective:To study the value of 3D print technique in the reconstruction of the defects and malformations of oral and maxillofacial bone.Methods:6 cases with defects and malformations of oral and maxillofacial bone were examined by CT scanning,treated by the implantation of 3D printed implants.Results:Before operation,3D printed model clearly showed the status of the defects and malformations for the precious preoperative implant shaping.The implants for the reconstruction were prepared by 3D print techinique.Perfect reconstruction of the defects was achieved.Conclusion:3 D printing technology exerts promising values in the precious and effective reconstruction of the defects and malformations of maxillofacial bones.

Insect-borne diseases are serious life-threatening infectious diseases. Rapid and accurate etiological diagnosis are the premise of timely and effective clinical treatments, reducing mortality and sequelae. Laboratory diagnoses of insect-borne diseases mainly focus on targeted serological detection and polymerase chain reaction, which is difficult to detect rare insect borne pathogens. At present, the metagenomic next-generation sequencing (mNGS) technology has moved from scientific research into clinical application. The detection of nucleic acid sequences of all organisms in infected samples by mNGS exhibited significant advantages in the diagnosis and traceability of rare pathogens. But at the same time, mNGS is also suffered with challenges such as background microbial interference, false results caused by database restrictions, pathogen resistance and host immune status information that are urgently needed for clinical treatments. This article systematically summarized applications of mNGS in the diagnosis of insect-borne pathogens and the challenges and difficulties it faces. With the continuous optimization of mNGS in the detection, it will bring new development and innovation to the etiology diagnosis of clinical infectious diseases.

Objective To summarize the postoperative complications of reconstruction of mandible defect with titanium reconstruction plate.Methods A total of 111 cases of the mandibular defect caused by various reasons and repaired by titanium reconstruction plate in the Department Oral and Maxillofacial Surgery of the affiliated Hospital of Qingdao University from 2003 to 2012 were collected and followed up.The complications were analyzed.Results Thirty-seven percent of 111 cases showed long term complications.The titanium fracture was the main complication(16％[18/111]),followed by stress-shielding (9％[10/111]),infection(8％[9/111]),and titanium plate exposure(4％[4/111]).Titanium plate fracture occurred within 8 months and 3 years after surgery.The simple titanium plate reconstruction had the highest rate of plate fracture(30％[15/50]).Stress-shielding in non-vascularized bone graft was more significant than that in vascularized bone graft(P＜0.05).When replaced by mini-titanium plate,the stress-shielding effect disappeared gradually.When the retention of mandibular margin height was less than 1 cm with the use of reconstruction plate,the postoperative complications were prone to occur.Conclusions Bone graft is the best way to reconstruct mandibular defect,and simple reconstruction plate repair is applied only as a transitional means for high degree of malignancy,obvious recurrence tendency tumor or special reasons such as age etc,which are not suitable for bone graft.The reconstruction plate fixation is not recommended for bone graft,especially non-vascularized bone graft.The retention of mandibular margin with reconstruction plate fixation is open to discussion.

Paget's disease of bone (PDB) is a common metabolic bone disease that is characterized by aberrant focal bone remodeling, which is caused by excessive osteoclastic bone resorption followed by disorganized osteoblastic bone formation. Genetic factors are a critical determinant of PDB pathogenesis, and several susceptibility genes and loci have been reported, including SQSTM1, TNFSF11A, TNFRSF11B, VCP, OPTN, CSF1 and DCSTAMP. Herein, we report a case of Chinese familial PDB without mutations in known genes and identify a novel c.163G>C (p.Val55Leu) mutation in FKBP5 (encodes FK506-binding protein 51, FKBP51) associated with PDB using whole-exome sequencing. Mutant FKBP51 enhanced the Akt phosphorylation and kinase activity in cells. A study of osteoclast function using FKBP51V55L KI transgenic mice proved that osteoclast precursors from FKBP51V55L mice were hyperresponsive to RANKL, and osteoclasts derived from FKBP51V55L mice displayed more intensive bone resorbing activity than did FKBP51WT controls. The osteoclast-specific molecules tartrate-resistant acid phosphatase, osteoclast-associated receptor and transcription factor NFATC1 were increased in bone marrow-derived monocyte/macrophage cells (BMMs) from FKBP51V55L mice during osteoclast differentiation. However, c-fos expression showed no significant difference in the wild-type and mutant groups. Akt phosphorylation in FKBP51V55L BMMs was elevated in response to RANKL. In contrast, IκB degradation, ERK phosphorylation and LC3II expression showed no difference in wild-type and mutant BMMs. Micro-CT analysis revealed an intensive trabecular bone resorption pattern in FKBP51V55L mice, and suspicious osteolytic bone lesions were noted in three-dimensional reconstruction of distal femurs from mutant mice. These results demonstrate that the mutant FKBP51V55L promotes osteoclastogenesis and function, which could subsequently participate in PDB development.
Acid Phosphatase ; Animals ; Asian Continental Ancestry Group ; Bone Diseases, Metabolic ; Bone Remodeling ; Bone Resorption ; Femur ; Humans ; Mice ; Mice, Transgenic ; Osteitis Deformans* ; Osteoblasts ; Osteoclasts ; Osteogenesis ; Phosphorylation ; Phosphotransferases ; Tacrolimus Binding Proteins ; Transcription Factors