BACKGROUND:Nanohydroxyapatite/colagen basal bone materials have a porous structure which is very close to natural bone. After implanting to the human body, it can be gradualy degraded and absorbed over time to play a strongly guiding and bridging role. OBJECTIVE:To investigate the clinical effect of nanohydroxyapatite/colagen basal bone materials on lumbar posterolateral bone graft fusion. METHODS: Fifty-eight patients with lumbar disease, including 28 males and 30 females, aged 47to81 years were included and were performed lumbar laminectomyvia posterior midline approach, or simultaneously performed discectomy and lumbar posterolateral bone graft fusion between transverse process. The bone graft material was nanohydroxyapatite/colagen basal bone repair material. Pedicle screw system was used to make the internal fixation. Patients were folowed up for 18 months after treatment. Pain relief and bone graft fusion condition were observed. RESULTS AND CONCLUSION: Fifty-eight patients had successfuly completed the treatment. The incisions healed by first intention. The clinical symptoms and signs were significantly improved compared with before treatment. The complications such as infection, screws shifting and loosening, spondylolisthesis and displacement of adjacent vertebral in fixed segments, and the adverse reactions associated with bone graft material were not occurred during the folow-up. At the 1st, 6th, 12th and 18th months after implanting nanohydroxyapatite/colagen basal bone materials, the visual analog scale scores of the lower limbs and waist were al lower than those before implantation (P < 0.05). At the 12thand 18th months of folow-up, the bone graft rates were 84% and 90%, respectively. These results demonstrate that the application of nanohydroxyapatite/colagen basal bone materials in the process of lumbar posterolateral bone graft fusion can ease the symptoms of lower limb pain and lower back pain, which is conducive to bone graft fusion.

BACKGROUND:Nano-hydroxyapatite/polyamide 66 composite has good material-cel interface and three-dimensional porous network structure, and it can also be gradualy degraded over time after implantation in the human body. OBJECTIVE:To explore the effect of nano-hydroxyapatite/polyamide 66 in early repair of femoral head necrosis. METHODS:A retrospective analysis was performed on clinical data of 62 cases of early osteonecrosis of the femoral head, including 32 males and 30 females, aged 34-51 years. These patients were divided into control group (31 cases) and observation group (31 cases) according to treatment methods. Core decompression with nano-hydroxyapatite/polyamide 66 implantation and core decompression with bone graft were respectively performed in the observation and control groups. Incidence of pain in the two groups was compared at 1 day after treatmen; and during the 12-month folow-up, the Harris score of the hip function in the two groups was compared. RESULTS AND CONCLUSION:There was no significant difference in the visual analog scale scores between two groups at 1 day after treatment. The Harris scores in the observation group were significantly higher than those in the control group at 3 and 12 months after treatment (P < 0.05). There was no adverse reaction in the two groups. These findings indicate that nano-hydroxyapatite/polyamide 66 material for repair of early femoral head necrosis has good biocompatibility, and can obtain good effects on limb function recovery.

BACKGROUND:Positive treatment of perioperative analgesia after total knee arthroplasty can accelerate recovery of joint function, reduce complications after replacement, and improve overal technical evaluation of total knee arthroplasty. ＜br> OBJECTIVE:To summarize commonly used analgesic drugs and analgesia method of total knee arthroplasty. ＜br> METHODS:A computer-based online research of Wanfang database and PubMed database was performed to col ect articles published between 1994 and 2014 with the keywords of“total knee replacement, epidural analgesia, peripheral nerve block, joint local analgesia, patient control ed analgesia, cold treatment”in Chinese and English. ＜br> RESULTS AND CONCLUSION:There were 986 articles after the initial survey. Final y, 55 articles were included according to the inclusion and exclusion criteria. As the technology for total knee arthroplasty, early functional rehabilitation and replacement of pain control has been widely concerned, a large number of literatures about analgesic drugs and analgesic programs emerge. Analgesic drugs include opioids, non-steroidal anti-inflammatory drugs, local anesthetics and N-methyl-aspartate receptor blockers. Analgesic program includes epidural analgesia, peripheral nerve blockage, joint local analgesia, patient-control ed analgesia and cold therapy. These analgesic drugs and methods have their advantages and disadvantages. At present, multimodal analgesia schemes have been recognized, but the optimal pain management scheme remains controversial. Increasing considerations should be paid on the choice of analgesic methods, depending on individual characteristics and existing technology.

Objectives To compare the co-infection statues of HSV, HBV and HCV in patients with STD and HIV infection for providing evidence of developing prevention and control strategies. Methods Serum samples confirmed to be infected with HIV/AIDS by Western blot, and serum samples of patients with STDs (syphilis, gonorrhoea and chlamydial infection) were tested for HSV2-IgG, HSV2-IgM, HBsAg and HCV-IgG by ELISA. The detection levels were compared between the two groups. Results Out of 76 specimens in STD group, HSV2-IgG was detected in 24 specimens (31.58%), HSV2-IgM in one specimen (1.32%), HBsAg positive in 8 (10.53%), and HCV antibody positive in 4 (1.32%). In 14 specimens of HIV/AIDS group, HSV2-IgG were detected in 7 (50.00%); HSV2-IgM in 5 (35.71%);8 (578.14%) were positive for HBsAg and 3 (21.43%) for HCV. In a total of 90 specimens, both HSV and HBV were detected in 6 specimens, both HSV-IgM and HBV in 2, and the four above-mentioned antibodies in 2. The infection rates of HSV, HBV and HCV were significantly higher in HIV-infected specimens than those in the STD specimens (P

Objective To establish an efficiency calibration method without a radioactive source for Inspector 2000 gamma spectroscopy system.Methods At the fwst step,geometry parameters of the detector were properly specified by comparisons of FEPE(Full Energy Peak Efficiency)between Monte Carlo(MC)calculations and the average measured values of HPGe and NaI detectors using point sources(137 Cs).The differences between calculations and measurements were generally within ±10% for gamma rays.Then,Monte Carlo simulation was used to evaluate the counting efficiency of Nal(TI)and HPGe detectors for BOMAB phantoms.Corresponding efficiency curves and functions were fitted.Results The counting efficiency received from the fitted efficiency functions had a good agreement with those from MC simulation.The bias for Nal detector ranged from-19% to 18%,while the bias for HPGe detector ranged from-11% to 17%.The above errors were totally acceptable in the on-site deployment during nuclear and radiological emergency events.Conclusions Monte Carlo method is simple,time and laborsaving in determing the counting efficiency of gamma spectroscopy system.

Objective To investigate dynamic metabolism in vivo of Ginkgo Folium Tablet under the guidance of sequential metabolism thoughts. Methods In situ closed-loop in rats was carried out to study sequential metabolism of Ginkgo Folium Tablet through oral digestive system, namely to investigate and compare the intestinal flora metabolism, the gut wall metabolism and hepatic metabolism, combined with chromatographic fingerprint of blood samples. Results The analysis showed that 12 peaks in Ginkgo Folium Tablet were metabolized by intestinal flora, and 7 peaks generated through the gut wall. Most components of Ginkgo Folium Tablet were metabolized in liver, and 3 original medicine components were directly into the blood. Conclusion This study conducts a qualitative description of metabolism of Ginkgo Folium Tablet in different parts of the oral route, and provides references for the quality control, mechanism explanation and secondary development for Ginkgo Folium Tablet.

Objective To select the components for quality control of Fructus Lycii based on the absorption of its extract. Methods To investigate metabolism of components of Fructus Lycii, everted rat gut sacs was carried out as well as the blood was taken from abdominal aorta,.and all samples were analysised by HPLC. Results There are twelve constituents absorbed between ileum and jejunum of rat , and four constituents were detected in the blood. Compound 2, 3, 4, 5, 6, 9, 10, 11 were absorbed in prototype forms in the intestine directly,and compound 1, 7, 8, 12 were new ones. On the other hand, four compositions(3, 7, 10, 13)could be absorbed into blood through analysis serum samples obtaining from aorta abdominalis of rats. Two of them (3, 10)could be absorbed directly by intestine, while(7)was absorbed into blood in new form . Conclusion Based on the intestinal absorption experiment and analysion of compsition in blood, components (3, 10, 13) can be the quality control ingredients of Fructus Lycii.

Objective To study the multicomponent in vivo dynamic process in Chuanxiong Rhizoma;To elaborate in vivo metabolic profiling. Methods HPLC was used to establish the fingerprint of aqueous extract of Chuanxiong Rhizoma, and multicomponent changes were detected at the same time. Closed-loop intestine method was used to study the multicomponent changes of oral administration of Chuanxiong Rhizoma after stomach-intestine-liver process. Results Totally 17 components were detected in the fingerprint of aqueous extract of Chuanxiong Rhizoma and they were basically stable in the digestive juice. For in vivo metabolism, 4 components were metabolized by intestinal flora;3 components were metabolized by liver;2 new components were the metabolites of intestinal flora;1 component was the metabolite of liver. Conclusion Multicomponent sequential metabolism and closed-loop intestine method were used to clarify that multicomponent metabolic profiling was feasible, and it could provide experimental basis for the metabolism of traditional Chinese medicine.

OBJECTIVE: This study evaluates the effects of H-uvulopalatopharyngoplasty (H-UPPP) on endothelial function by endothelium dependent flow-mediated dilation(FMD) in patients with moderate to severe obstructive sleep apnea syndrome (OSAHS). METHOD: Forty-five healthy subjects and 49 patients with moderately to severe OSAHS who desired H-UPPP were prospectively enrolled. FMD was measured by high-resolution B-mode ultrasonography. All subjects participated in sleep studies. These studies were repeated 6 months after H-UPPP in patients with moderately to severe OSAHS. RESULT: There was significant difference in FMD between patients with moderately to severe OSAHS and healthy subjects at baseline (6.5 +/- 2.1)% vs (11.2 +/- 3.1)% (P < 0.01). FMD increased from (6.5 +/- 2.1)% to (9.7 +/- 2.7)% 6 months after H-UPPP in patients with moderately to severe OSAHS (P < 0.01). CONCLUSION FMD is decreased in patients with moderately to severe OSAHS, H-UPPP treatment of these patients leads to improvement of FMD.
Case-Control Studies ; Endothelium, Vascular ; physiology ; Humans ; Otorhinolaryngologic Surgical Procedures ; methods ; Palate ; surgery ; Pharynx ; physiology ; surgery ; Polysomnography ; Prospective Studies ; Sleep Apnea, Obstructive ; surgery ; Uvula ; surgery

Objective This paper was to study the absorption and metabolism differences of intestine and liver for multicomponent licorice.Methods The components were identified with the UPLC-MS/MS. In situ closed-loop method was used to carry out the comparative experiments of absorption and metabolism differences between intestine and liver.Results 13 components were identified by UPLC-MS/MS. The absorption and metabolism results indicated some components in licorice water extract could be absorbed into blood and metabolism happened during this process. 14 metabolites were detected in the plasma sample. The hepatic metabolism results indicated many components could experience complex metabolism and more metabolites could be generated.Conclusions Liver was the major metabolism organ for licorice water extract and some components could be metabolized along with the absorption process in intestine. The absorption and metabolism differences between intestine and liver were significant.