Postoperative epidural adhesion is one of the most common causes of failed back surgery syndrome (FBSS), which can lead to back and leg pain or neurological deficit. Prevention of epidural adhesion after laminectomy is critical for improving the outcomes of lumbar surgery. The main origins of epidural fibrosis are raw surface of erector muscles and rupture fibers of intervertebral disc. The main current preventive methods for epidural adhesion include the usage of implants, chemicals and low dose radiation. However, most of them are still in experiment period. There are still controversies on the clinic usage of autograft free fat, ADCON-L, and Mitomycin C (MMC). The optimal implants are characteristics of better biocompatibility, degradable absorption and capability of existing for a certain period in body. The optimal medicine should have good effect on anti-desmoplasia, less side effects and long half-life. Besides, the combination of biodegradable medical film and drug and the mixture of two or more medical films are also the research frontlines of epidural adhesion. Further researches are required to explore new materials and drugs with stable and most favorable effect in preventing epidural adhesion.
Biocompatible Materials ; administration & dosage ; Epidural Space ; pathology ; Humans ; Laminectomy ; adverse effects ; Lumbar Vertebrae ; surgery ; Tissue Adhesions ; prevention & control

Objective: To prepare exenatide-loaded poly (lactic-co-glycolicacid)(PLGA) microspheres and to evaluate their release behavior in vitro. Methods: Exenatide-loaded PLGA microspheres were prepared by W/O/O method using PLGA as vectors. An HPLC approach was established to determine the content and in vitro cumulative release. The physicochemical characteristics of microspheres, including the mean diameter, morphology, drug entrapment efficiency and loading efficiency, were evaluated. Results: The prepared microspheres were well-shaped, with a mean diameter of (51.2±1.97) μm. The drug loading was (4.50±0.13)% and the encapsulation efficiency was (96.5±2.68)%. The first day burst release was (13.19 ± 1.39)% and the in vitro 28-day-cumulative-release was (88.6 ± 0.73)%. Conclusion: The W/O/O method is stable, controllable, and repeatable for preparing exenatide-loaded microspheres using biodegradable polymers PLGA as the vector; the microspheres yield a one-month continuous release and have a bright future in treatment of diabetes mellitus.

Objective: To construct mcpr1prokaryoti c expression vector and to express MCPR1 protein.Methods:PCR was used to obtain coding region of mcpr1. Construction of a high-level fusion protein expression vector pGEX-4T-mcpr1 was conducted by inserting the fra gment of coding region of mcpr1into a fusion protein expression vector pGEX -4T-1. Then the recombinant plasmid was transferred into E. colito prepar e the MCPR1/GST fusion protein. DNA sequencing and endonucleases digesting were used to check the coding region. Results:pGEX-4T- mcpr1 wa s constructed successfully and the coding region was inserted into the vector co rrectly. A new protein band of 36 000 was observed by SDS-PAGE analysis after i nduction by IPTG. The 36 000 protein amounted to 39 percent of the total prote in and existed mostly in precipitation of broken bacteria. Conclusion: MCPR1 protein can be expressed in E. coliexpression system and purif ied initially.

Adult ; Chronic Disease ; Female ; Humans ; Kidney Transplantation ; adverse effects ; Male ; Middle Aged ; Nasal Polyps ; etiology ; Postoperative Complications ; Sinusitis ; etiology

Female ; Humans ; Methotrexate ; Pregnancy ; Pregnancy, Ectopic

Adult ; Aged ; Aged, 80 and over ; Humans ; Male ; Middle Aged ; Occupational Health ; legislation & jurisprudence ; Pneumoconiosis ; diagnosis

Objective:To observe the temporal and spatial expression and function of mcpr1 gene during murine tooth germ development.Methods:The expression of MCPR1 at different stages of mouse tooth germ were detected by immunohistochemical staining.Results:MCPR1 expression was detected at all stages of tooth germ, but the distribution patterns at various stages were different. It indicated that the temporal and spatial expression pattern of MCPR1 during murine tooth germ development was specific.Conclusion:mcpr1 might play an important role in modulating the differentiation and mature of enamel organ.

Objective To explore the early diagnosis and treatment of congenital mesenteric hiatual hernia.Methods A retrospective study was carried out in 4 patients with congenital mesenteric hiatual hernia in Tongji hospital from Nov.2005 to Mar.2007,and combining lite-rature,the diagnosis and treatment of mesenteric hiatal hernia was summed up.Results Four patients were diagnosed in operation.One case was thought as adhesive intestinal obstruction before operation;two patients were on emergency operation and 2 patients were on time-elective operation;one patient preoperative CT scan may suggest mesenteric hiatal hernia;one case had partial resection of small intestinal,the others were replaced the intestine and fixed the defect.One patient occurred early septic shock;all of them had get well.Conclusions It′s hard to diagnose the congenital mesenteric hiatual hernia before operation.Abdomen CT examination and multislice spiral CT angiography (MSCTA) help to diagnose.Early diagnosis and timely operation are the therapeutic key of congenital mesenteric hiatual heria.For the patients with recurrent abdominal pain,who was not confirmed with a variety of inspection,laparoscopic exploration can provide diagnosis,and can take the initiative to control the development of disease.

Objective To systematically evaluate the safety of high dose atorvastatin (80 mg daily) in Chinese patients. Methods Randomized controlled trials (RCTs) investigating 80 mg/ d atorvastatin vs. low-dose atorvastatin or placebo or blank were electionically retrieved in date bases of EMbase, PubMed, the Cochrane Library, WanFang, CNKI and WeiPu. Meta-analysis was performed using RevMan 5. 2 and Stata 11. 0 software. Results A total of 20 RCTs involving 2282 cases were included. The results of meta-analysis showed no significant differences betweent the 80 mg/ d atorvastatin group and the control group in the incidence of gastrointestinal adverse events (RR 1. 53, 95% CI 0. 85-2. 76, P = 0. 16), hepatic adverse events (RR 1. 53, 95% CI 0. 99 - 2. 36, P = 0. 05), muscular adverse events (RR 1. 51, 95% CI 0. 92 -2. 49, P = 0. 10), serious hepatic injuries ( RR 2. 33,95% CI 0. 88 - 6. 20, P = 0. 09) and serious muscular myopathies (RR 1. 40, 95% CI 0. 46 - 4. 30, P = 0. 56). Subgroup analysis by type of cotrast media used and durations of taking 80 mg/ d atorvastatin showed there were higher risks of gastrointestinal adverse events in the 80 mg/ d group when compared to blank control ( RR 4. 22, 95% CI 1. 11 - 16. 04, P = 0. 03). Conclusions The current evidence shows that 80 mg / d atorvastatin may be relatively safe in terms of adverse events in gastrointestinal tract, liver and muscular system, and relatively has risk in causing severe liver injuries and myopathies. With limited quantity and quality from the RCTs available, more high quality RCTs are needed to verify the above conclusion.

Adult ; Bronchoalveolar Lavage ; methods ; Female ; Follow-Up Studies ; Humans ; Male ; Middle Aged ; Pneumoconiosis ; therapy ; Retrospective Studies ; Treatment Outcome