Rapeseed oil is one of the major raw materials for biodiesel production. The bottleneck of rapeseed oil-based biodiesel production at present is high cost of raw materials, which generally accounts for about 75% of total production cost. Current status and principal problems concerned in the production of biodiesel from rapeseed oil in China and other countries were introduced, based on which it was proposed to grow high-erucic acid rape in existing winter fallow fields and jointly produce biodiesel, erucic acid and its derivative products, and other highly valuable by-products such as glycerin and sterols from high-erucic acid rapeseed oil. The feasibility of this development strategy was analyzed in terms of product and market demand potential, economic benefits of enterprises, techniques and conditions of production, and source of raw materials. It was believed that the implementation of the strategy in China was of great significance in realizing rise and sustainable development of rapeseed oil-based biodiesel production, improving quality of biodiesel, promoting the development of biochemical engineering and many other industries, as well as in building a socialist new countryside.

Objective To investigate the effect of fluoride on the expression of a subunit of calcium/calmodulin-dependent protein kinase- Ⅱ (α-CaMK Ⅱ ) at both mRNA and protein levels in human neuroblastoma cells were cultured in DMEM with final concentrations of NaF 0(control) ,0.05,0.50,2.00,5.00 mmol/L, respectively, for 48 hours. Then quantitative RT-PCR and Western blot were performed to detect the expression level of α-CaMK Ⅱ P1 (postnatal day 1) pups together with their mothers were randomly divided into three groups. Lactating rats were given drinking water containing NaF at concentrations 0(control) ,2,3 mmol/L. And pups were exposed to NaF through milk. In each group, 8 pups were sacrificed on day 14 after birth. In post-weaning period, another 8 pups in each group were given drinking water with the same dose of fluoride as their mother's 21 day after birth. After then, these pups were killed on day 28, and hippocampus was dissected immediately and Western blot was conducted mRNA and protein levels were decreased. When NaF concentrations were 0,0.05,0.50,2.00,5.00 mmol/L, the mRNA relative ratios of α-CaMKⅡ in SY5Y cells were 1.00 ± 0.00,0.77 ± 0.18,0.40 ± 0.11,0.22 ± 0.06 and 0.15 ± 0.03, and protein levels of α-CaMK Ⅱ were 100.00 ± 0.00,76.17 ± 2.08,59.16 ± 2.12,48.52 ± 2.71 and 43.51 ± 2.57, any mmol/L group, hippocampus α-CaMK Ⅱ protein levels on day 14 and 28(75.02 ± 2.88,73.83 ± 3.88 and 81.00 ± 2.54,45.70 ± 2.34) were significantly lower than that of control groups(100.00 ± 0.00,100.00 ± 0.00, all P < 0.01). In 3 mmol/L group, hippocampus α-CaMKⅡ protein level on day 28 was lower than that of 2 mmol/L group (P < 0.01). Conclusion Fluoride can decrease mRNA and protein levels of α-CaMK Ⅱ in nerve cells and hippocampus, which may be one of the mechanisms of learning and memory impairment by fluorosis.

OBJECTIVETo explore the reason, key diagnosic point and therapeutic method of the incisions fat colliquation or infections at early stage after operation of lumbar disc herniation.

METHODSFrom July 2007 to May 2012, clinical data of 11 patients with incision fat liquefaction or early infection after lumbar discectomy were retrospectively analyzed. There were 5 males and 6 females with an average age of 43.1 years, and the mean time of incisions fat colliquation or infection was 5 days and a half after operation. The main clinical features included local wound pain aggravating, fervescence, fresh seepage in the wound, and blood inflammatory index increased, etc. The wound could heal at the first treatment stage or not was an evaluation standard of curative effect.

RESULTSAll patients were followed up with an average period of 21 months. The wounds of 10 cases healed at the first stage without recurrence and complications. In 1 case infected by staphylococcus aureus, distal part of the wound present local red, swelling and with wave motion at 2 months after operation, staphylococcus aureus infection was confirmed after puncture and bacterial culture, and 1 thrum was found after local incision. The wound healed after change dressings for 1 week, without recurrence after followed up for 13 months.

CONCLUSIONPreventing the risk factors before operation, minimizing invasive technique during operation reasonable antibiotics application for the lumbar operation reguiring placement objects, and correctly handling with wound after operation could prevent and reduce the incidence of incisions fat liquefaction or infection after operation of lumbar disc herniation. For incision fat liquefaction or infection, early diagnosis, debridement, VSD negative pressure irrigation and drainage, to choosing sensitive antibiotics according to the results of drug sensitivity, may contribute to wound early healing and decrease complication.

Adipose Tissue ; pathology ; Adult ; Aged ; Female ; Humans ; Intervertebral Disc Displacement ; surgery ; Lumbar Vertebrae ; surgery ; Male ; Middle Aged ; Staphylococcal Infections ; pathology ; therapy ; Surgical Wound Infection ; pathology ; therapy ; Time Factors

OBJECTIVETo investigate the operative method and effect of the treatment of acromioclavicular dislocation with steel wire or clavicular hook plate.

METHODSSixty-seven patients were reviewed in the study. In group A 34 patients were treated with steel wire internal fixation including 24 males and 10 females with an average age of 31.2 years ranging from 18 to 52. In group B 33 patients were treated with clavicular hook plate internal fixation including 19 males and 14 females with an average age of 30.9 years ranging from 19 to 50. Compared the time of operation and bleeding and postoperative complications between two groups.

RESULTSThe time of operation was (48.90 +/- 36.56) min in groups A and (79.50 +/- 29.34) min in group B,the time of group A was shorter than that of group. The bleeding during operation was (49.70 +/- 52.36) ml in group A and (121.10 +/- 49.08) ml in group B, the bleeding of group A was less than that of group B. Only 1 case in group A occurenced fixation failing.

CONCLUSIONTreatment of acromioclavicular dislocation with steel wire is a simple and small wounds and effective way.

Acromioclavicular Joint ; injuries ; Adolescent ; Adult ; Bone Plates ; Bone Wires ; Female ; Fracture Fixation, Internal ; methods ; Humans ; Joint Dislocations ; surgery ; Male ; Middle Aged ; Steel

OBJECTIVETo study measurement methods of acromioclavicular and coracoclavicular ligament injuries,its therapeutic effects and complications during internal fixation operation for the treatment of fresh acromioclavicular joint dislocations of Tossy type III.

METHODSFrom July 2003 to May 2012,127 patients with acromioclavicular joint dislocations of Tossy type III were treated with wire fixation from coracoid process to clavicle or hook-plate fixation. The patients were divided into group A (63 cases) and group B (64 cases) according to whether acromioclavicular ligament and coracoclavicular ligament were repaired or not. In group A (ligaments repaired), there were 39 males and 24 females with an average age of (33.25 +/- 8.46) years old (ranged from 17 to 59 years). And in group B (no ligaments repaired), there were 41 males and 23 females with an average age of (34.10 +/- 7.19) years (ranged from 19 to 57 years). The operation times, intraoperative blood loss, postoperative infections, internal fixation failure, recurrence and other complications, together with therapeutic effects were compared between two groups.

RESULTSThe outcome was analyzed according to Karlsson standard. In group A, 54 patients got an excellent result and 9 good according to Karlsson standard;the average operative time was (55.90 +/- 26.56) min; the average intraoperative bleeding amount was (99.80 +/- 50.30) ml; 1 patient had wire broken without re-dislocation at 16 weeks after operation, 3 patients got wound fat liquefaction and recovered after treatment, 1 patient had pain after shoulder joint motion and pain disappeared after implants were taken out. In group B, 52 patients got an excellent result and 12 good according to Karlsson standard; the average operative time was (49.50 +/- 23.14) min; the average intraoperative bleeding amount was (87.30 +/- 46.41) ml; 2 patients got wound fat liquefaction, and 2 patients had pain after shoulder joint motion. All the patients were followed up, and the duration ranged from 9 to 16 months. All internal steel-wire or hook plate were taken out during 4 to 9 months without acromioclavicular joint re dislocation. There were no significant difference in the average operative time, the average intraoperative blood less, complication recurrence rates of fixation failure, wound fat liquefaction, postoperative infection, acromioclavicular joint re-dislocation, and therapeutic effects between two groups.

CONCLUSIONBoth wire and clavicular hook plate fixation, performed for fresh acromioclavicular joint dislocation with Tossy type III, are simple, effective, less invasive method with less blood loss. In addition, the treatment without ligaments repaired could not increase incidence of complications.

Acromioclavicular Joint ; diagnostic imaging ; injuries ; surgery ; Adolescent ; Adult ; Case-Control Studies ; Clavicle ; Female ; Humans ; Joint Dislocations ; diagnostic imaging ; surgery ; Ligaments ; diagnostic imaging ; injuries ; surgery ; Male ; Middle Aged ; Orthopedic Procedures ; methods ; Tomography, X-Ray Computed ; Treatment Outcome ; Young Adult

Adult ; Aged ; Bone Plates ; Female ; Femoral Fractures ; surgery ; Femur ; injuries ; surgery ; Fracture Fixation, Internal ; Humans ; Male ; Middle Aged ; Minimally Invasive Surgical Procedures

Adolescent ; Adult ; External Fixators ; Female ; Fracture Fixation, Internal ; methods ; Fractures, Comminuted ; surgery ; Humans ; Male ; Middle Aged ; Tibial Fractures ; surgery

OBJECTIVETo assess the effect of wild-type p53 gene on the chemotherapy sensitivity of ovarian cancer SKOV-3 cells to cisplatin.

METHODSRecombinant eukaryotic expression vector pcDNA3 containing full-length human wild-type p53 cDNA was introduced by lipofectamine-mediated gene transfection into SKOV-3 cultured cells which were acted on by cisplatin of different concentrations. The chemotherapy sensitivity of tumor cells with different-status p53 was observed.

RESULTSThe inhibitive rate of formation of clones after p53 cDNA transfection was 56.4% compared with the untransfected one. The formation of clones decreased by 76.2% and 84.1% respectively after being acted on by 0.5 ug/ml cisplatin for 24 hours and 48 hours respectively. The formation of clones decreased by 89.5% and 93.7% respectively after being acted on by 1 ug/ml cisplatin for 24 hours and 48 hours respectively. After the introduction of p53 cDNA, the S phase and the ratio of G(2)/M phase of tumor cells decreased, and the ratio of G(1)/G(0) phase increased. The introduction of p53 gene into cells led to cell cycle arrest in G(1) phase.

CONCLUSIONThe exogenous introduction of wild-type p53 cDNA into ovarian cancer SKOV-3 cells increased the chemotherapy sensitivity to cisplatin.

Antineoplastic Agents ; pharmacology ; Blotting, Northern ; Blotting, Western ; Cell Cycle ; physiology ; Cell Division ; drug effects ; genetics ; Cisplatin ; pharmacology ; DNA, Complementary ; genetics ; Dose-Response Relationship, Drug ; Female ; Genotype ; Humans ; Ovarian Neoplasms ; drug therapy ; genetics ; pathology ; Plasmids ; genetics ; RNA, Messenger ; genetics ; metabolism ; Time Factors ; Transfection ; Tumor Cells, Cultured ; drug effects ; Tumor Suppressor Protein p53 ; genetics ; metabolism ; physiology

This study was aimed to investigate the changes of the hypothalamic-pituitary-adrenal axis (HPAA) activity and the cytokines system in the hypothalamus of the depressive rats which were exposed to chronic unpredictable mild stressors (CUMS) after middle cerebral artery occlusion (MCAO). By means of qRT-PCR, ELISA and Western blot, mRNA and/or protein expressions of corticotropin releasing factor (CRF), tumor necrosis factors-α (TNF-α), suppressor of cytokines signaling 3 (SOCS3), phosphorylation of signal transducers and activators of transcription 3 (pSTAT3) were measured in the hypothalamus of rats. The results showed that, compared with control group, CUMS+MCAO group exhibited increased mRNA levels of CRF, TNF-α, SOCS3, as well as up-regulated CRF, TNF-α, SOCS3 and pSTAT3 protein expressions. Furthermore, there were correlations between CRF and TNF-α, TNF-α and SOCS3, SOCS3 and pSTAT3, respectively. These observations indicated the CRF system was activated in the post stroke depression (PSD) status. The TNF-α and its signaling pathway, STAT3/SOCS3, were up-regulated in mRNA and protein levels. In conclusion, this study presents the evidence which supports the hypothesis of signaling cross-talk between the CRF system and TNF-α signaling pathway after ischemic stroke and CUMS.
Animals ; Hypothalamo-Hypophyseal System ; physiology ; Hypothalamus ; physiology ; Infarction, Middle Cerebral Artery ; Phosphorylation ; Pituitary-Adrenal System ; physiology ; Rats ; STAT3 Transcription Factor ; metabolism ; Signal Transduction ; Suppressor of Cytokine Signaling 3 Protein ; Suppressor of Cytokine Signaling Proteins ; metabolism ; Tumor Necrosis Factor-alpha ; metabolism ; Up-Regulation

Objective: To explore a single center large cohort of patients with Takayasu’s arteritis for their clinical manifestation and long-term outcome in China. Methods: We retrospectively analyzed 566 patients with Takayasu’s arteritis admitted in our hospital from 2002-01 to 2013-11 for their clinical characteristics, laboratory ifndings, angiographic features, treatment and long-term outcomes. Results: The patient’s ratio for female to male gender was 1 to 3.8 and the average onset age was (28.9 ± 12.0) years. The most common non-speciifc symptom, initial symptom and complication were fever (52/566 patients, 9.2%), dizziness (214 patients, 37.8%) and hypertension (392 patients, 69.3%) respectively. The patients with pulmonary artery and coronary artery involvement were 83 (14.7%) and 66 (11.7%) respectively, and 131 (23.1%) patients had faster erythrocyte sedimentation rate. The major vascular damage was steno-occlusive lesion and the most common involvement was left sub-clavian artery, which was observed in 278 (49.1%) patients. The treatments were mainly included in medication, interventional therapy, autologous blood vessel transplantation, artiifcial blood vessel transplantation and aortic valve replacement. There were 32 patients died during the mean follow-up period of (5.0 ± 0.2) years. Hypertension, complication and the progressive stage of disease were the major factors affecting prognosis in relevant patients (regression coefifcients: 4.664, 1.959 and 1.870 respectively, allP<0.05). Conclusion: Hypertension was the leading reason for patients’ hospital visit. Takayasu’s arteritis was closely related to cardiovascular disease, the early diagnosis and treatment were really important in clinical practice.