Microcapsule technology recently has been applicated and developed in pharmaceutical,chemical,food and so on.The achievments have been obtained on the novel technics of microcapsulation,analytical methods of microcapsule characteristics,and methods of characterization for the appearance and porous structures of microcapsules.The novel developments on the structure and property of microcapsules were reviewed.

Objective To analysis the cause of injury of traumatic optic neuropathy and explore the main factors affecting the prognosis of visual acuity. Methods We retrospectively collected clinical data of 104 cases (108) of traumat-ic optic neuropathy from January 2007 to December 2012 in the Renhe Hospital of Three Gorges University. We then ex-amined the cause of injury and analyzed risk factors for poor prognosis of visual acuity in traumatic optic neuropathy us-ing multivariate Logistic regression analysis. Results The mean age of patients was 33.6 ± 12.8 years and 95 cases (91.3%) were males. The injury was mainly caused by non-motor vehicle and motor vehicle accidents (84 cases, 80.8%). Most of the patients came to the hospital within 3 days after the injury (81 cases, 77.9%). Overall efficacy rate of treat-ment was 45.4%(49/108). The effective rate was 29.9%(20/67) for visual acuity without light perception and 70.7%(29/41) for visual acuity with light perception, respectively. Logistic regression analysis showed that the time to treatment≥24h, orbital hemorrhage or orbital fracture, ethmoid or sphenoid sinus bleeding and no light perception vision were an in-dependent prognostic factors. Conclusion Time to treatment time and severity of injury are the independent risk factors for poor visual prognosis of traumatic optic neuropathy whereas controlling these risk factors has important clinical signifi-cance to the treatment and prognosis of traumatic optic neuropathy.

BACKGROUND: This study was undertaken to investigate the expression of hypoxia-inducible factor-1α (HIF-1α) in rat cerebral cortex and the effects of β-sodium aescinate (SA) administration after return of spontaneous circulation (ROSC).METHODS: Sixty rats were divided into three groups: SA group, injected intraperitoneally with SA instantly after ROSC; control group, injected intraperitoneally with normal saline; and sham-operated group, without cardiac arrest or SA. The cardiac arrest model was established using asphyxiation and intravenous potassium chloride. Blood was sampled 1, 6, 12, and 24 hours after ROSC. Protein and mRNA levels of HIF-1α, VEGF and EPO were detected in the cerebral cortex by immunohistochemistry and real-time RT-PCR; serum levels of NSE and S100β were determined by enzyme-linked immunosorbent assays.RESULTS: Serum S100β and NSE were signifi cantly increased in the control group versus the sham-operated group 1, 6, 12 and 24 hours after ROSC (P<0.05). Protein and mRNA levels of HIF-1α, VEGF and EPO were signifi cantly increased in the control rats (P<0.05). Serum NSE and S100β were significantly decreased in the SA group versus the control group 1, 6, 12 and 24 hours after ROSC (P<0.05). Protein and mRNA levels of HIF-1α, VEGF and EPO were signifi cantly increased in the SA group (P<0.05).CONCLUSIONS: The expression of HIF-1α is increased in rat cerebral cortex after ROSC, and SA up-regulates the expression of HIF-1α. The up-regulation of HIF-1α improves the resistance of the cortex to ischemia and hypoxia and contributes to neuroprotection, possibly because of up-regulation of EPO and VEGF expression.

Cellular fibronectin (cFn) is a type of bioactive non-collagen glycoprotein regarded as the main substance used to maintain periodontal attachment. The content of cFn in some specific sites can reflect the progress of periodontitis or peri-implantitis. This study aims to evaluate the expression of cFn messenger RNA (mRNA) in tissues of adult periodontitis and peri-implantitis by real-time fluorescent quantitative polymerase chain reaction (PCR) and to determine its clinical significance. A total of 30 patients were divided into three groups of 10: healthy, adult periodontitis and peri-implantitis. Periodontal tissue biopsies (1 mm×1 mm×1 mm) from each patient were frozen in liquid nitrogen. Total RNA was extracted from these tissues, and the content, purity and integrity were detected. Specific primers were designed according to the sequence, and the mRNA expression levels of cellular fibronectin were detected by real-time PCR. The purity and integrity of the extracted total RNA were both high, and the specificity of amplified genes was very high with no other pollution. The mRNA expression of cFn in the adult periodontitis group (1.526±0.441) was lower than that in the healthy group (3.253±0.736). However, the mRNA expression of cFn in the peri-implantitis group (3.965±0.537) was significantly higher than that in the healthy group. The difference revealed that although both processes were destructive inflammatory reactions in the periodontium, the pathomechanisms were different and the variation started from the transcription level of the cFn gene.
Adult ; Alveolar Bone Loss ; metabolism ; Female ; Fibronectins ; analysis ; genetics ; Gingiva ; metabolism ; Humans ; Male ; Middle Aged ; Peri-Implantitis ; metabolism ; Periodontal Attachment Loss ; metabolism ; Periodontal Index ; Periodontal Pocket ; metabolism ; Periodontitis ; metabolism ; Periodontium ; metabolism ; RNA, Messenger ; analysis ; Real-Time Polymerase Chain Reaction ; Transcription, Genetic ; genetics ; Young Adult

Objective To observe the bone density, serum osteoprotegerin (OPG) level,relevant parameters of bone metabolism and sex hormones in elderly men with osteoporosis before and after treatment with oral Fosamax for 3 years. Methods The serum OPG level was compared between 72 randomly selected elderly male patients with osteoporosis and age-matched healthy controls. The bone density, serum OPG level, sex hormones, serum calcium and phosphorus,parathyroid hormone (PTH), osteoealein and urine type Ⅰ collegen crosslinked N-telopeptides (NTX),urine calcium and cretinine were tested in all elderly male patients with osteoporosis before and after 3 years of oral Fosamax treatment. The role of OPG in anti-osteoporotic therapy was studied by comparison of the parameters tested during the course of treatment. Results The serum levels of OPG osteoealcin, PTH and urine NTX were obviously higher in elderly men with osteoporosis than in healthy controls [(10.56±2.56) pmol/L vs. (8.91±2.20) pmol/L, (9.544±4.40) g/L vs. (6.774±2.87)rig/L, (70.39±35.58) ng/L vs. (47.11±21.80) ng/L, (72.06±9.78) nmol/L vs. (63.36±14.61)nmol/L, all P<0.05]. After treatment with oral Fosamax , the bone density was significantly increased. However, serum levels of OPG[(8.23±2.96)pmol/L], osteocalcinE(6.18±2.27)μg/L],PTH[(40.46±14.43) ng/L] and urine NTX[(64.83±11.40) nmol/L] were significantly decreased after treatment (all P<0.05). Spearman analysis showed that the improvement of bone density after treatment was closely associated with serum OPG level. Conclusions Serum OPG level in elderly patients with osteoporosis is much higher than that in control group. The improvement in bone density after treatment is associated with the decrease in OPG level. Bone density and relevant parameters of bone metabolism can be improved in elderly male patients with osteoporosis by using oral Fosamax.

Objective:To investigate the wear resistance of four low-shrinkage commercial composite resins and two traditional composite resins in vitro and discuss the relative influencing factors, and to illustrate the inner relationship of the wear resistance of resins and material composition.Methods:Four low-shrinkage commercial composite resins including CLEARFIL MAJESTY Posterior(CMP), Filtek LS(LS), Admira(AD), Kalore(KA) and two traditional composite resins including Filtek Z350XT (Z350), Solitaire2(S2) were chosen.The bar-shaped specimens were fabricated and mounted in a UMT-2 wear testing machine and abraded with the two-body media (distilled water) with a Si3N4 ball as antagonist.The maximum wear depth was determined after 14 400 cycles.The friction coefficient was determined during the test.The worn surfaces were examined with SEM.Results:CMP showed the lowest maximum wear depth and KA presented the highest maximum wear depth.The maximum wear depth ranked as follows: CMP

Objective To understand the prevalence and distribution characteristics of symptoms of anorectal diseases in Chinese residents(older than 18) as to provide reference for prevention,care and treatment of anorectal diseases.Methods Stratified sampling was used according to the economic level in every province in the country,and each province selected two cities.Face-toface interviews were used to collect data in 68 906 interviewers and SPSS 17.0 was performed to analyze the data.Results Of 68 906 respondents,25 634 (37.20 ％) reported to suffer from at least one symptoms of anorectal diseases.The prevalence of the top 5 main symptoms of anorectal diseases were prolapse of anus neoplasms(14.55％),anal sore(16.53％),anal pendant expansion (14.98 ％),perianal abscess (5.88 ％),hematochezia (22.52 ％).Each symptom frequency difference was statistically significant (x2=7 727.6,P＜0.001).Populations which proned to suffer from symptoms of anorectal disease had the following characteristics:living in city,male,ageing 25-54 years old,having specialist qualifications,lacking of physical.Conclusion The prevalence of symptoms of anorectal diseases among Chinese residents was high,and each symptom had its distribution characteristics.More targeted interventions should be taken in anorectal disease prone people.

BACKGROUND:Studies have shown that vacuum sealing drainage can accelerate wound healing through increasing the wound blood flow, but its influence on activated gelatinases in human chronic wound stil lacks corresponding research. OBJECTIVE:To observe the effect of vacuum sealing drainage on the activity of gelatinase during the healing of chronic wounds. METHODS:Total y 96 trauma patients admitted at the People’s Hospital of Hubei University of Medicine from April 2013 to January 2014 were divided into two groups:52 patients in chronic wound group were treated with vacuum sealing drainage and 44 in control group treated with wound drainage at 3 days after removal of breast cancer. In the chronic wound group, exudates from pressure sores and skin necrosis after removal of breast cancer were col ected as samples A and B;exudates from two cases of venous stasis ulcer were col ected as samples C and D;exudates from traumatic skin wounds col ected as sample E. RESULTS AND CONCLUSION:TLC analyzer showed that:after 15-day negative pressure therapy, activities of matrix metal oproteinase 2 in sample A with low activity of gelatinase, matrix metal oproteinase 9 in sample B, matrix metal oproteinase 2 and 9 in samples C, D, E were al increased significantly (P<0.05);however, the activities of matrix metal oproteinase 9 in sample A with high activity of gelatinases and matrix metal oproteinase 2 in sample B were reduced significantly after treatment (P<0.05). In addition, no significant difference was found in the activity of matrix metal oproteinase 2, matrix metal oproteinase 9 and activated gelatinase betweenthe chronic wound group and control group (P>0.05). These findings indicate that the variation of activated gelatinases activity in human chronic wounds may be the reason why the chronic wounds cannot be healed for a long time, but vacuum sealing drainage can regulate the activity of activated gelatinases in chronic wounds.

Objective During pregnancy , exosomes can be released from the placenta into maternal circulation and play im-portant roles in normal pregnancy or placenta-related diseases .We aimed to establish a simple and efficient method for isolating and i-dentifying placental exosomes from maternal serum and lay a foundation for the studies of pregnancy -related diseases . Methods Using sucrose gradient centrifugation with 8% PEG6000 precipitation twice , we isolated and purified placenta-derived exosomes from normal maternal serum and detected their molecular markers CD 63 , CD81 and PLAP by Western blot , followed by silver staining anal-ysis of the protein profile of the exosome pellet .We identified the morphology of the placenta-derived exosomes by transmission electron microscopy ( TEM) and measured the size and distribution of the particles by dynamic light scattering ( DLS) . Results Silver stai-ning of the protein profiles of the exosomes after sucrose gradient centrifugation clearly revealed the bands of the protein molecules . Western blot showed the expressions of CD 63, CD81, and PLAP in the 21-34%density layer, which demonstrated the presence of serum placental exosomes mainly in the 1.09-1.16 g/mL density layer.TEM exhibited that the placenta-derived exosomes were round or oval cup-shaped, specifically expressing PLAP, and the particles were uniform in size, with a mean diameter of (41.79 ±11.94) nm. Conclusion A simple, fast, and efficient method was successfully established for isolating placenta-derived exosomes from ma-ternal serum, which provides a basis for studying the roles of placental exosomes in normal pregnancy and placenta -related diseases.

OBJECTIVETo evaluate the clinical effects of single posterior debridement, bone grafting, internal fixation and local chemotherapy in treating thoracolumbar spinal tuberculosis.

METHODSFrom February 2009 to September 2012,11 patients with thoracolumbar spinal tuberculosis were treated by single posterior debridement, bone grafting, internal fixation and local chemotherapy. There were 7 males and 4 females, aged from 27 to 65 years old with an average of 53.7 years. The courses of disease was from 3 months to 2 years with the mean of 9 months. According to ASIA standard of spinal cord injury, 3 cases were grade C and 8 cases D. After treatment, clinical effects were evaluated by ASIA grade, visual analogue score (VAS) and Oswestry Disability Index (ODI); kyphosis Cobb angle change was observed by X-rays.

RESULTSEleven patients were followed up from 12 to 29 months with an average of 18 months. ASIA grade of spinal cord injury, 3 patients with grade C improved to grade D in 2 cases and grade E in 1 case 8 patients with grade D improved to grade E in 7 cases and unchanged in 1 case. VAS decreased from preoperative 6.10 ± 1.30 to 1.70 ± 0.80 at 3 d after operation (P < 0.05). ODI improved from preoperative (68.36 ± 10.41)% to (14.55 ± 8.99)% (P < 0.05) at 3 d after operation. Kyphotic Cobb angle was corrected from preoperative (22.64 ± 4.84)° to (4.27 ± 1.49)° (P < 0.05) on the 3rd day after operation, and angle loss was mild at final follow-up, there was no significant difference between postoperative at 3 d and final follow-up.

CONCLUSIONSingle posterior debridement, bone grafting, internal fixation and local chemotherapy for the treatment of thoracolumbar spinal tuberculosis can effectively remove the lesion, improve nerve function and correct deformity, has advantage of single incision, little trauma, and low recurrence rate. But it still need long-term and systemic treatment with anti-TB drugs.

Adult ; Aged ; Bone Transplantation ; Debridement ; Female ; Humans ; Internal Fixators ; Lumbar Vertebrae ; surgery ; Male ; Middle Aged ; Retrospective Studies ; Thoracic Vertebrae ; surgery ; Tuberculosis, Spinal ; therapy