Objective:To investigate the structural alterations of mitochondria and its role in neutrophil death induced by ONO-AE-248.Methods:Human neutrophils were cultured in vitro with ONO-AE-248(5?10-5 mol/L)and medium alone. Transmission electron microscopy(TEM) was used to detect the structural alterations of mitochondria and the level of mitochondria membrane potential by flow cytometry using mitocapture dying.Results:ONO-AE-248 resulted in extremely swollen mitochondria within 6 hours. Meanwhile, a rapid loss of mitochondrial membrane potential of neutrophils occurred, especially in 3 hours and 6 hours. There were obviously differences between spontaneous apoptosis and non-apoptosis programmed cell death induced by ONO-AE-248.Conclusion:The experiment results suggest that changes of mitochondrial structure and function be typically morphological, physiological and biochemical features in this unique form of neutrophil death, and that the mitochondrial pathway might play a more important role in ONO-AE-248-induced death of neutrophils.

Autoimmune diseases (AID) are characterized by autoimmune disorder, as autologous tissue is attacked by the autoimmune system. It is reported that the imbalance of autoimmune tolerance and ingrained inflammatory response are the core events of AID undoubtedly. Peroxisome proliferator-activated receptor γ (PPARγ) which belongs to the nuclear hormone receptor superfamily is a ligand activated transcription factor. PPARγ combines with retinoid X receptor (RXR) to form heterodimer. When PPARγ is activated, the complex regulates gene expression by binding to a specific peroxisome proliferator response element (PPRE). In addition, PPARγ has diversified biological functions, playing important roles in regulating metabolism, controling inflammation, modulating glucose and lipid metabolism, ameliorating atherosclerosis, anti-tumor, and regulating immune response. However, recently researches indicate that PPARγ participates in the pathogenesis of AID. PPARγ plays key roles in regulating activation and polarization of macrophages, function of dendritic cells, proliferation and differentiation of T cells, and modulation of the function of related stromal cells. This article summarizes the biological functions and signal transduction pathways of PPARγ and the protective effects of agonists of PPARγ on AID, aiming to provide theoretical support for the research of mechanism and prevention and treatment of AID.

Objective To observe the effect of lovastatin on plasminogen activator inhibitor -1 (PAI-1) and collagen type Ⅳ in rats with glomerularsclerosis induced by adriamycin,and to discuss its mechanism of protective effects on kidneys.Methods Twenty-four male Wistar nephritic rats induced by adriamycin were randomly divided into 3 groups:control,hyperlipidemia and lovastatin treatment group.They were fed 12 weeks.Urinary protein excretion and serum lipid were assayed,then renal glomerularsclerosis index,the expression of PAI-1 and collagen type Ⅳ were observed.Results Serum total cholesterol,triglycerides,low-density lipoprotein,urinary protein excretion,renal glomerularsclerosis index were significantly lower in treatment group than those in hyperlipidemia group.Expression of PAI-1 and collagen type Ⅳ,and number of foamcells were also sharply lower in treatment group than those in hyperlipidemia group.Conclusions Lovastatin not only reduces proteinuria,improves renal function,but also modulates glomerularsclerosis by inhibiting activity of PAI-1 and decreasing accumulation of collagen type Ⅳ.The mechanism of renal protective effect is independent of a reduction of circulating cholesterol.

Objective To explore the influence of brain-derived neurotrophic factor (BDNF) on the differentiation of nerve stem cells (NSCs) from neonatal rat hippocampus in vitro and to find new revulsant of NSCs,which can improve the percentage of NSCs differentiating into neurons.Methods Twenty-four hours neonatal rats were selected to obtain hippocampus tissue to culture NSCs in serum-free culture medium by suspending culture.The high pure NSCs were obtained after passing 2 generations.The culture cells were identified as NSCs by staining of nestin,which was NSCs special marker.After passaged three generations,the NSCs were randomly classified into 2 groups:test group and control group.There were 15 pieces per group.There was 2 mL per piece,which contains 1?105 cells.50 g/L fetal bovine serum(FBS) and 20 ?g/L BDNF were added into foundational culture medium in test group;only 50 g/L FBS was added into foundational culture medium in control group.The neurons and their percentage were tested using the immunofluorescence labeling and flow cytometer after 7 days of differentiated cultivation.Results The hippocampus tissue cells grew in globular in serum-free culture medium by suspending culture,which expressed highly positive by nestin immunofluorescence staining.Its purity was above 90%.The percentage of neurone specific enolase(NSE)-positive cells in test group was 60.45%,which was obviously higher than that of control group (23.67%).The difference was significant between 2 groups(?2=27.75 P

Objective To explore the protective effect of selenium, an antioxidant, on fluoride-induced renal injury in rats and find out the optimal level of selenium against fluoride toxicity and its valid molecular target.Methods All 80 male weanling SD rats were randomly divided into 8 groups by body weight as follows: normal control group(drinking tap water), fluoride exposed group (drinking water containing 50 mg/L of NaF), low, middle,high selenium exposed groups(drinking water containing 0.375, 0.750, 1.500 mg/L of Na2SeO3) and low, middle,high Se-fluoride groups (drinking water containing both 50 mg/L NaF and three doses of Na2SeO3 as abovementioned, respectively). After 6 months, the rats were killed then the oxidation level and nuclear factor κB(NF-κB)expression level in kidney were measured. Results The weight of the fluoride exposed group[(695.95 ± 55.89 )g]was significantly deceased than the controls[(782.69 ± 56.12)g, P ＜ 0.01]. Glutathione peroxidase(GSH-Px)activity of fluoride exposed group[(55.86 ± 5.09)U/mgprot] was not significantly different but decreased. Tatal antioxidant capacity (T-AOC) activity in fluoride exposed group [(7.54 ± 1.35)U/mgprot] significantly decreased than the controls[(9.03 ± 0.37 )U/mgprot, P ＜ 0.05]. In addition, a significant increase of malondialdehyde ( MDA )in fluoride exposed group[(3.86 ± 0.31 )mnol/mgprot, P ＜ 0.05] was observed than the controls[(3.14 ± 0.32)nmol/mgprot, P ＜ 0.05]. GSH-Px activity of high Se-fluoride group[(74.99 ± 8.41 )U/mgprot] was significantly higher than the fluoride exposed group[(55.86 ± 5.09)U/mgprot, P ＜ 0.05] and its MDA level[(3.17 ± 0.20)nmol/mgprot] was lower than the fluoride exposed group[(3.86 ± 0.31 ) nmol/mgprot, P ＜ 0.05]. NF-κB expression levels of fluoride group, high selenium group and low Se-fluoride group(0.360 ± 0.015,0.367 ± 0.007,0.376 ± 0.006,respecyively) were obviously increased compared with the controls(0.312 ± 0.022, P ＜ 0.05); it was significantly lower in high Se-fluoride group(0.312 ± 0.005) than in fluoride exposed group(0.360 ± 0.015, P ＜ 0.05). Conclusions Na2SeO3 of 1.5 mg/L is the optimal dose against chronic fluorosis on kidney injury under this experimental condition.NF-κB is likely to be a target molecule of the selenium as an antagonist on fluorosis.

Objective To analyze clinical features and sum up experience for the treatment of ischemic bowel disease. Methods Clinical data of 73 patients with the diagnosis of ischemic bowel disease were retrospectively analyzed. ResultsTwenty-eight patients were male and 45 patients were female. The median of age was 65 years (range of 38 to 89 years). Forty-eight patients were associated with hypertension, 23%(17/73) patients had a history of coronary disease and 15% (11/73) had diabetes. Seventy patients presented symptom of abdominal pain and 93% (68/73) had hematochezia. Symptoms relieved by conservative treatment in 96% (63/66) patients. Nine patients underwent a surgery. One patient died of sepsis postoperatively. One suffered from colostomy necrosis and leakage of the rectum segment. Conclusion 1. Elder patients presenting symptoms of abdominal pain and hematochezia, especially with a history of cardio-cerebrovascular disease and diabetes should be considered for the possibility of ischemic bowel disease. 2. Most patients with ischemic bowel disease could be successfully treated by conservative therapy. 3. Surgery for patients with chronic relapsing and nonresponsible symptoms was difficult and patients often suffer from high postoperative complications.

Objective To investigate the current status of coal-burning endemic fluorosis and the fluoride content in foods and drinking water in Hongya County,Sichuan Province.Methods Dental fluorosis and urinary fluoride were suveyed in children of 8～12 years old in two schools which repectively located in Gaomiao and Wawushan Town.The adults above 20 years old underwent clinical examination.At the same time,fifty adults above 20 years old in Garden Village were chosen to take forearm and calf X-ray films to find out the evidence of skeletal fluorosis.The content of fluoride in food such as bacon,corn,dry capsicum in Sanxing Village in Gaomiao Town and Futian Village in Wawushan Town as well as drinking water in five families in Sanxing Village were determined.Results The dental fluorosis rate of children was 40.76%(161/395),the dental fluorosis index was 0.86 in Gaomiao Town.The dental fluorosis rate of children was 14.36%(82/571),the dental fluorosis index was 0.31 in Wawushan Town.The medium value of the urine fluoride was 0.81 mg/L.ranged 0.16～3.89 mg/L.The positive rate oi the clinical examination of skeletal fluorosis was 5.27%(27/512),the X-rays detective rate was 4.00%(2/50).The medium value in bacon,corn,dry capsicum were 6.00,0.64,1.49 mg/kg.The averaged content of the fluoride in drinking water(0.14±0.06)mg/L of local household was within the eligible limitation.Conclusions It is currently a mild endemic disease in Hongya Country,its incidence is reduced apparently,pathogenetic environmental fluoride content is reduced.The main source of fluoride is from the preserved ham contaminated with fluoride,which is epidemiologically significant in endemic area of Hongya County.Defluoriding countermeasures should be taken in the endemic areas.

The objective of this work was to investigate the effect of six individual strains of fungi on the reduction of gossypol levels and nutritional value during solid substrate fermentation of cottonseed meal (CSM). Six groups of disinfected CSM substrate were incubated for 48 h after inoculation with either of the fungi C. capsuligena ZD-1, C. tropicalis ZD-3, S. cerevisae ZD-5, A. terricola ZD-6, A. oryzae ZD-7, or A. niger ZD-8. One not inoculated group (substrate) was used as a control. Levels of initial and final free gossypol (FG), crude protein (CP), amino acids (AA) and in vitro digestibility were assayed. The experiment was done in triplicate. The experimental results indicated that microbial fermentation could greatly decrease (P<0.05) FG levels in CSM. The detoxification efficiency differed between the species of microorganisms applied. From the perspective of reducing CSM potential toxicity, C. tropicalis ZD-3 was most successful followed by S. cerevisae ZD-5 and A. niger ZD8. They could reduce FG levels of CSM to 29.8, 63.07 and 81.50 mg/kg based on DM (dry matter), respectively, and their detoxification rate were 94.57%, 88.51% and 85.16%, respectively. If crude protein, amino acids content and their in vitro digestibility were also taken into account, A. niger ZD-8 may be the best choice. The CP content of CSM substrate fermented by C. tropicalis ZD-3 and A. niger ZD-8 were improved by 10.76% and 22.24%; the TAA (total amino acids) contents were increased by 7.06% and 11.46%, and the EAA (essential amino acids) were raised by 7.77% and 12.64%, respectively. Especially, the levels of methionine, lysine and threonine were improved greatly (P<0.05). The in vitro CP digestibility of CSM fermented by C. tropicalis ZD-3 and A. niger ZD-8 was improved by 13.42% and 18.22%, the TAA were increased by 17.75% and 22.88%, and the EAA by 16.61% and 21.01%, respectively. In addition, the in vitro digestibility of methionine, lysine and threonine was also improved greatly (P<0.05).
Amino Acids ; analysis ; Cottonseed Oil ; chemistry ; metabolism ; Digestion ; Fermentation ; Fungi ; metabolism ; Gossypol ; analysis ; Nutritive Value ; Plant Proteins ; analysis

Objective To establish CFPAC-1 cell lines deficient in CDC25B2 by recombinant lentivirus, and to investigate the role of this gene. Methods After CFPAC-1 cells were transduced with recombinant lentivirus producing CDC25B2 siRNA, stably transduced cells with green fluorescent protein were selected by flow cytometer. The mRNA and protein expression of CDC25B2 was examined by RT-PCR and Western blot analysis. The effect of the lentivirus on the cell proliferation, cell cycle, clone-forming, migration and invasion ability was analyzed by MTr method, flow cytometer, plate clone-forming assay and Transwell chamber method respectively. Results CDC25B2 siRNA knocked down CDC25B2 expression in CFPAC-1 cells significantly. The silencing efficiency of siRNA transduction by recombinant lentivirns was very high. Proliferation, cloneforming, migration and invasion ability of human pancreatic cancer cell line CFPAC-I were significantly in-creased, while cell cycle was not affected. Conclusion CDC25 B2 plays an important role in cell proliferation, clone-forming, migration and invasion of pancreatic cancer. This research provides experimental evidences for targeting CDC25B2 in gene therapy against pancreatic cancer.

OBJECTIVETo observe the changes of proximal femoral geometry after femoral neck fracture treated with THA, analyze the existent of differences and their manifestation.

METHODSAll patients of femoral neck fracture (FNF) and osteonecrosis of femoral head (ONFH) were treated with THA by the same operating team from January to December of 2014, including 22 patients with FNF (11 males and 11 females,with age from 44 to 83 years old (means 66.18 ± 11.47) and 23 patients with ONFH (12 males and 11 females, with age from 19 to 68 years old (means 51.91 ± 11.76). After THA, height of femorals, offsets, osteotomy position and adjusting modes were measured and the statistic analysis was done.

RESULTSAfter THA, all patients were measured. Decreased femoral height, offsets and lower osteotomy positions were found in patients with FNF than those with ONFH, and 3 kinds of adjustments because of lower-positional osteotomy were found.

CONCLUSIONAfter THA, lower-positional osteotomy and decreased femoral offsets may occur on patients with FNF. The adjustments caused by lower-positional osteotomy may lead to negative results.

Adult ; Aged ; Aged, 80 and over ; Arthroplasty, Replacement, Hip ; methods ; Female ; Femoral Neck Fractures ; pathology ; surgery ; Femur ; pathology ; Femur Head Necrosis ; pathology ; surgery ; Humans ; Male ; Middle Aged