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Objective:To compare the long-term prognosis between open versus closed reduction and internal fixation in the treatment of unstable pelvic fractures.Methods:The data of 402 consecutive patients with unstable pelvic fracture were retrospectively analyzed who had been treated at The First Medical Center and The Fourth Medical Center, PLA General Hospital, and Strategic Support Force Specialty Medical Center from March 2011 to March 2017. This cohort was divided into 2 groups according to the reduction methods. In the open group of 194 cases subjected to open reduction and internal fixation, there were 133 males and 61 females with a median age of 43.0 (30.7, 51.0) years, and 35 cases of type B and 159 cases of type C by the Tile classification. In the closed group of 208 cases subjected to closed reduction and internal fixation, there were 115 males and 93 females with a median age of 45.5 (32.0, 56.0) years, and 40 cases of type B and 168 cases of type C by the Tile classification. The 2 groups were compared in terms of 12-items Short Form Health Survey (SF-12) scores [physical component summary (PCS) and mental component summary (MCS)] at the last follow-up, time from injury to operation, frequency of intraoperative X-ray fluoroscopy, intraoperative and postoperative blood transfusion, operation time, and quality of postoperative fracture reduction.Results:There was no statistically significant difference between the 2 groups in the preoperative general data except for the gender, showing the 2 groups were comparable ( P>0.05). This cohort of 402 patients was followed up for 7.8(6.2, 8.8) years. At the last follow-up, the PCS [49.9 (45.4, 55.4) points] and MCS [53.1 (46.4, 57.6) points] in the closed group were significantly higher than those in the open group [48.2 (41.4, 52.7) and 46.5 (40.6, 53.6) points] ( P<0.05). The closed group incurred significantly shorter time from injury to operation [6 (5, 8) d] and operation time [180 (126, 260) min] than the open group [9 (6, 13) d and 240 (165, 334) min], significantly less intraoperative and postoperative blood transfusion [1.5 (0, 4.0) U] than the open group [5.0 (2.9, 8.0) U], significantly higher frequency of intraoperative X-ray fluoroscopy [104.5 (85.0, 132.0) times] than the open group [21.0 (18.0, 26.0) times], and a significantly higher excellent and good rate of postoperative fracture reduction (92.8%, 193/208) than the open group (86.6%, 168/194) (all P<0.05). Conclusion:In the treatment of patients with unstable pelvic fractures, compared with open reduction and internal fixation, closed reduction and internal fixation can not only significantly shorten the waiting time and operation time of patients, reduce the transfusion during operation, but also achieve better fracture reduction to ultimately improve the quality of life of patients.
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Objective:To compare short-term clinical efficacy between femoral neck system (FNS) and cannulated compression screws (CCS) in the treatment of femoral neck fractures in young adults.Methods:Retrospectively analyzed were the data of 94 patients with femoral neck fracture who had been admitted to Department of Orthopedics and Traumatology, The First Affiliated Hospital to University of Science and Technology of China, Department of Orthopaedics, The First Affiliated Hospital to Anhui Medical University and Department of Orthopaedics, The Second Affiliated Hospital to Anhui Medical University from October 2019 to October 2020. They were divided into 2 groups according to their modes of internal fixation: a FNS group ( n=47) and a CCS group ( n=47). In the FNS group there were 30 males and 17 females with a mean age of (47.8±9.8) years; in the CCS group there were 26 males and 21 females with a mean age of (43.7±13.1) years. The 2 groups were compared in terms of operation time, incision length, intraoperative blood loss, fracture healing time, weight-bearing time, Harris hip score and complications. Results:There was no significant difference in preoperative general data or follow-up duration between the 2 groups, showing comparability between groups ( P>0.05). In the FNS group, operation time [(47.7±9.4) min] was significantly shorter than that in the CCS group [(66.1±3.8) min], postoperative partial and full weight-bearing time [2.0 (2.0, 3.0) weeks, (6.4±2.1) weeks] significantly earlier than that in the CCS group [8.0 (3.0, 9.0), (10.1±3.4) weeks], fracture healing time [3.0(3.0, 4.0) months] significantly shorter than that in the CCS group [3.0(3.0, 4.0) months], Harris hip score at the last follow-up [95.0 (93.0, 95.0) points] significantly higher than that in the CCS group [90.0 (88.0, 95.0) points], incidence of lateral thigh irritation [0% (0/47)] significantly lower than that in the CCS group [31.9% (15/47)], and neck shortening length (4.3±3.9 mm) significantly shorter than that in the CCS group (6.9±4.5 mm) (all P<0.05). There was no significant difference in the rate of avascular necrosis of the femoral head or rate of internal fixation failure between the 2 groups ( P>0.05). Conclusion:In the treatment of femoral neck fractures in young adults, compared with CCS fixation, FNS fixation can shorten operation time and fracture healing time, allow patients to ambulate early after surgery, which is beneficial to maintenance of femoral neck length and to functional recovery of the hip.
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Objective@#To investigate the correlation between expression of long non-coding RNA (lncRNA) ZXF1 and clinicopathological characteristics, as well as prognosis of lung adenocarcinoma; and to explore its potential molecular mechanism.@*Methods@#A total of 83 lung adenocarcinoma tissue samples and 83 paracancerous lung tissue samples from lung adenocarcinoma patients were collected. The mRNA expression of ZXF1 in the tumors and the corresponding adjacent non-tumor tissues were determined by real-time fluorescence quantitative PCR. The correlation between ZXF1 level and clinicopathological characteristics such as age, gender, smoking history, tumor size, tumor differentiation and lymph node metastasis was evaluated. Survival analysis was performed using Kaplan-Meier and Cox multivariate regression, based on the data of a 12-56 months follow-up after surgery. In vitro ZXF1 was over-expressed in lung adenocarcinoma A549 cells, and then the proteins functionally related to ZXF1 were identified by protein array analysis.@*Results@#Of the 83 cases of lung adenocarcinoma, the ZXF1 mRNA levels in the tumor and adjacent non-tumor tissues were 8.32±3.05 and 1.05±0.47, respectively (P<0.05), and a high-level the high expression of ZXF1 in the tumor tissues was detected in 56 cases. The expression status of ZXF1 was closely correlated with the tumor differentiation and lymph node metastasis (P<0.05), but was not significantly related to age, gender and tumor size. Based on a 12-56 months follow-up, the patients with high level ZXF1 expression had a shorter disease free survival (DFS) and overall survival (OS) than that of the group with low level ZXF1 (all P<0.05). Multivariate analysis showed that ZXF1 expression, tumor size and lymph node metastasis were independent risk factors to DFS; and ZXF1 expression, tumor size, lymph node metastasis and tumor differentiation were independent risk factors to OS. The protein array data revealed that expressions of bone morphogenetic protein 5 (BMP-5)and stem cell factor receptor (SCFR)were upregulated upon overexpression of the ZXF1 in A549 cells.@*Conclusions@#lncRNA ZXF1 is overexpressed in lung adenocarcinoma, and is closely correlated with tumor differentiation and lymph node metastasis. As an independent risk factor, a high expression of ZXF1 indicates a poor prognosis for the patients. ZXF1 may influence the biological behavior of lung adenocarcinoma by enhancing the protein expression of BMP-5 and SCFR.
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Objective To study the regulative effects of herbal medicament on the immune functions of immunosuppressive?model mice. Methods The dexamethasone induced immunosuppressive mice model was adopted. Comparison was made with the normal control group(sterile water)and the positive control group(levamisole). In order to identify the role of the immune function of differ?ent doses of the herbal medicament on proliferation degree of T and B lymphocyte as well as the influence on the NK cells activity in vivo and in vitro were tested. The low,medium and high dose were 2.4,4.8 and 7.2 g/kg respectively in vivo,and 25,50 and 100 mg/L respectively in vitro. Results The herbal medicament had obvious proliferation effect on T lymphocyte of immunosuppressive mice model induced by dexamethasone with or without ConA stimulation in vivo and in vitro(P<0.01). Proliferation function was also shown on B lymphocyte of mice with or without stimulation of LPS in vivo and in vitro(P<0.01). It had no proliferation effect on NK cells in vivo and in vitro. Under the condition with or without interleukin stimulating NK cell killing rate was all increased. Conclu?sion The herbal medicament improves the immune function of low immunity mice mainly based on proliferation of T and B lym?phocytes and increased lethality of NK cells.
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Traditional Chinese medicine is the crystallization of civilization and wisdom of Chinese nation , in which the complex components exhibit unique advantages in anti-tumor therapy through multi-channel and multi-target.Through the summary of the litera-tures recently, the research on anti-tumor mechanism of traditional Chinese medicine was reviewed to provide reference for the deep re -search and clinical application of traditional Chinese medicine .
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Objective:To study the preparation methods of N3-O-toluyl-flulorouracil (TFu) solid lipid nanoparticles(SLNs) and chitosan modified TFu SLNs. Methods: TFu-SLNs and chitosan modified TFu-SLNs were prepared by film dispersion-homogenization methods. The morphology, particle diameter and zeta potential were detected. The preparation methods were optimized by single factor experiments and an orthogonal design, and the stability of the nanoparticles was also studied. Results: The mean diameter of TFu-SLNs was 160. 2nm, and the zeta potential was -33. 2 mV. The mean diameter of chitosan modified TFu- SLNs was 400. 3nm, and the zeta potential was +12. 87 mV. With the concentration increase of chitosan, the zeta potential was enhanced. The optimized TFu-SLNs had higher reproducibility and stability. Conclusion:The formula of TFu-SLNs is optimized by an orthogonal design to obtain the optimal formula of TFu -SLNs and chitosan modified TFu-SLNs.
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BACKGROUND:A large number of studies have confirmed that tissue-engineered stem cel therapy is feasible to repair peripheral nerve injury, but the repair mechanism is unclear. OBJECTIVE:To observe the differentiation and homing of bone marrow mesechnymal stem cel s under local nerve microenvironment by exploring the migration and effect of bone marrow mesenchymal stem cel s in the repair of damaged nerve. METHODS:Male SD rats, aged 8 weeks, were selected to establish segmental nerve injury models by freezing the sciatic nerve. Thirty-six model rats were randomized into three groups (n=12):frozen nerve injury group, cel injection into the nerve group, cel injection around the nerve group. Before modeling and at 4, 8, 12 weeks after cel implantation, the sciatic nerve function index was measured. Electrophysiological test, contractility recovery rate, wet weight recovery rate of the triceps surae were detected and Masson staining was performed;toluidine blue staining of the distal nerve injury and immunofluorescence staining of the damaged nerve were performed. RESULTS AND CONCLUSION:At 4, 8, 12 weeks after cel implantation, the sciatic nerve function index was ranked as fol ows:frozen nerve injury group
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BACKGROUND:During ordinary plate fixation, the soft tissues around the fracture of the proximal humerus are nearly stripped to impact blood supply, and moreover, an ordinary steel plate cannot meet with the fixed requirements for severe osteoporosis, large bone defects and comminuted fractures. OBJECTIVE: To observe the functional recovery and complications in middle-aged patients with proximal humeral fractures undergoing stainless steel locking plate implantation. METHODS:From March 2011 to March 2014, 48 patients with proximal humeral fractures were treated in the 306th RESULTS AND CONCLUSION: The 48 patients were folowed up for 6-17 years, and the mean healing time was (15.3±1.2) weeks. At the last folow-up, the Neer scores were excelent in 12 cases, good in 22 cases, fair in 11 cases and poor in 3 cases, with an excelent-good rate of 71%. After internal fixation, there was one case of Hospital of PLA, including 20 males and 28 females, with an average age of 58 years. Of the 48 cases, there were 9 cases of Neer 2 fractures, 26 cases of Neer 3 fractures, and 13 cases of Neer 4 cases, al of which belonged to closed injuries. Al the patients were subject to locking plate implantation for repair of fractures of the proximal humerus, and evaluated based on Neer scores. soft tissue infection, two cases of traumatic arthritis, and no bone ununion and osteomyelitis. These findings suggest that the stainless steel locking plate implantation for repair of fractures of the proximal humerus can achieve a good anatomic reduction under minimaly invasive conditions and produce a stable rehabilitation environment for the soft tissue around the shoulder joint by internal fixation. Hence, the factures can recover faster with less complications. The stainless steel locking plate implantation can obtain good achievements in the repair of proximal humeral fractures of Neer 2, 3 as wel as Neer 4 in young patients with good bone quality.
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Objective To prepare a novel bioactive and degradable scaffold with mineralized collagenpolyose based composite by biomimetic synthesis for bone tissue engineering and explore the compatibility of osteoblast culturing on the scaffold. Methods Two kinds of polyelectrolyte were assembled on the surface of diatomite particles in order to adsorbe on nano-zirconia through opposite charges. Zeta potential,particle size and size distribution were compared before and after the modification of diatomite; IR was used to analysis molecular structure of functional group changes on the surface of diatomite particles, nano-composite powder morphology was observed by SEM. Results Two kinds of the polyelectrolyte were successfully assembled on the surface of diatomite powders. Particle size and size distribution were significantly reduced, d (0.5) reduce from 16.421 μm to 0.420 μm. SEM showed the dispersion of the modified diatomite was improved and had a good adsorption with nano-zirconia. Conclusion Layer-by-layer technique could enhance the dispersion of diatomite-based dental ceramic powders as well as a good adsorption of nano-composite ceramic powder.
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Objective To discuss the experience of medical care for the assurance of security of the'Shenzhou Ⅶ'astronauts at the landing venue in order to innovate a high efficient mobile ICU in medical helicopters.Method The data collected from over.as and domestics were reviewed and analyzed to find out the possible causes of accidental injuries to astronauts during acmspaec flight,and to pmpose a practicably and effectively prophylactic strategy and reasonable treatments for the astronauts with accidental injuries.Results Three,high efficient mobile ICU innovated could elqsure the safety ofthe astronauts.The ICUs with high efficiency were set up in the helicopters where the surgery Call he peormed for controlling the danlage.Fine armature made our work mole effective.Conclusions Practicably and effectively Plephylactic measurements and reasonable treatments are the essential aspect of the successfulness for the security of astronauts of manned aemspacecraft flights.The innovated medical care system in helicopters could realized the obligation of swift response and the duty offirst-md.
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One patient with the pedicle screw threatening the aorta was treated with adjusting the position of pedicle screw by anterolateral approach. No nervous lesion was found after adjusting. Radiograph showed the position and length of screw at T11 left pedicle of vertebral arch were good. No adverse reaction was detected after 2-years of follow-up.
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Objective To detect the genetic toxicity of a neotype in situ polymeric injectable artificial prosthetic nucleus pulposus.Methods The artificial prosthetic nucleus pulposus was soaked for preparing the leaching liquor which was used for tests of genetic toxicity.Salmonella typhimurium reverse mutation test(Ames Test),mammalian cell chromosome aberration(CA) test utilizing Chinese hamster ovary cells(CHO),and mouse micronucleus(MN) test were performed to detect the genetic toxicity of the extraction,including the effects on DNA,chromosome aberration and genetic mutation.Results The number of reverse mutation strains,from five strains of every dosage group,was all lower than half of quantum of control group,with or without the addition of S9,in the Ames Test,which assessed as negative.In CA test,no significant difference of chromosome aberration rate existed among the high,medium and low concentration group,while the CA rate of all the three groups was lower than that of the negative group(P0.05),but significantly lower than that of the positive control group(P
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Objective To evaluate the efficacy of laparoscopic first-stage Fowler-Stephens for high cryptorchidism. Methods Seven children with high cryptorchidism (10 testes) were enrolled in this study. After detecting the testicles under a laparoscope, we dissected the spermatic cord vessels. Then, the spermatic duct was separated, and the gubernaculum testis was retained. Afterwards, the first-stage orchidopexy was performed laparoscopically. Results Nine of the 10 testes were successfully placed into the scrotum by first-stage Fowler-Stephens. In one patient who had bilateral cryptorchidism, the left testis was placed into the scrotum at the second stage operation. The seven patients were followed up for 6-24 months (mean, 14 months). None of them had retraction or atrophy of the testis. Conclusions Laparoscopic first-stage Fowler-Stephens is effective for high cryptorchidism. The procedure is worth being widely used.
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OBJECTIVE:To observe the short-term curative effect of treating malignant tumor with compound glycyrrhizin injection plus chemotherapy and the effect of the combined therapy on liver function.METHODS:A total of62patients with malignant tumor were randomly divided into two groups:the treatment group was assigned to receive compound glycyrrhizin injection(60ml)combined with chemotherapy,and control group receive single conventional chemotherapy,the short-term curative effect and the impact on liver function between groups were compared.RESULTS:The total effective rates were51.6%and32.8%,respectively for the treatment group and the control group(P