Objective To observe the long-term efficacy of anti-infective reconstituted bone xenograft (ARBX) combined with external fixation of posttraumatic long bone infection in lower extremities.Methods This retrospective case series study included 36 patients with posttraumatic long bone infection in lower extremities followed up for more than 18 months after receiving one-stage ARBX bone grafting combined with ring external fixation from January 2004 to December 2013.There were 21 male and 15 female patients,at the age of 19-72 years (mean,35.8 years).Multiple fractures were seen in 24 patients and single fractures in 12 patients.Bone and functional results were evaluated using the association for the study and application of the method of Ilizarov (ASAMI) classification.Results Follow-up ranged from 18 to 72 months (mean,38 months).Bone union was seen in 33 cases in a mean period of 5.2 months,and infection was completely cured.Length of limbs in all patients reached the expected extension length with the bone extension length of 3-10 cm (mean,5.2 cm).All the extended areas showed bone healing.According to the ASAMI classification,bone result was excellent in 20 patients,good in 13 and fair in 3,with the excellent and good rate of 92％,and limb function recovery was excellent in 18 patients,good in 11 and fair in 7,with the excellent and good rate of 81％.Conclusion ARBX adjuvant external fixator treatment of posttraumatic long bone infection in lower extremities improves bone healing rate and limb function recovery rate and shortens bone healing time at one stage.

Objective To evaluate dual-source dual-energy CT(DSCT) for the differentiation of urinary stone composition in vitro. Methods Ninety-seven urinary stones were obtained by endoscopic lithotripsy and scanned using dual-source dual-energy CT. The stones were divided into six groups according to infrared spectroscopy stone analysis: uric acid ( UA ) stones ( n = 10 ), cystine stones ( n = 5 ), struvite stones( n = 6), calcium oxalate ( CaOx ) stones ( n = 22 ), mixed UA stones ( n=7 ) and mixed calcium stones(n=47). Hounsfield units (HU) of each stone were recorded for the 80 kV and the 140 kV datasets by hand-drawing method. HU difference, HU ratio and dual energy index ( DEI ) were calculated and compared among the stone groups with one-way ANOVA. Using dual energy software to determine the composition of all stones, results were compared to infrared spectroscopy analysis. Results There were statistical differences in HU difference [(-17±13), (229±34),(309 ±45), (512 ±97), (201±64)and (530±71) HU respectively], in HU ratio (0.96±0.03, 1.34 ±0.04, 1.41 ±0.03, 1.47 ±0.03,1.30±0.07, and 1.49 ±0.03 respectively), and DEI( -0.006 ±0.004, 0.064 ±0.007, 0.080 ±0. 007, 0. 108±0.011 ,0. 055 ±0.014 and 0. 112 ±0.008 respectively ) among different stone groups(F=124. 894,407.028, 322. 864 respectively, P ＜0. 01 ). There were statistical differences in HU difference,HU ratio and DE1 between UA stones and the other groups( P ＜ 0. 01 ). There were statistical differences in HU difference, HU ratio and DEI between CaOx or mixed calcium stones and the other four groups (P＜0. 01 ). There was statistical difference in HU ratio between cystine and struvite stones ( P ＜ 0. 01 ). There were statistical differences in HU difference, HU ratio and DEI between struvite and mixed UA stones (P＜0. 05 ). Dual energy software correctly characterized 10 UA stones, 4 cystine stones, 22 CaOx stones and 6 mixed UA stones. Two struvite stones were considered to contain cystine. One cystine stone, 1 mixed UA stone, 4 struvite stones and 47 mixed calcium stones were considered to contain oxalate. Conclusions DSCT has the ability to differentiate urinary stone composition in vitro. With dual energy software, the UA, cystine and mixed UA stones can be differentiated from other types of stones.

Objective To establish biological reference intervals of neonatal T lymphocyte subsets and IgG, IgA,IgMlevels in 24 -hour newborns in Guangxi.Methods Maternal history and neonatal clinical data were evalua-ted and recorded.Venous blood samplings were collected within 24 hours of birth and were sent for testing in half an hour.The neonates were divided into the early -preterm,the late -preterm and the term neonates group,1 1 0 cases for each group.The parturients were divided into Dexamethasone treatment group and without Dexamethasone treatment group.Data in neonates and the parturients and the sex were analyzed by SPSS 1 7.0 software and the biological refe-rence values were calculated.Results The two -sided reference intervals of 95% in the early -preterm group,the late -preterm group and the term neonates group were as follows:CD3 +:52.07 -88.92 g/L,58.1 6 -90.42 g/L, 56.1 5 -95.67 g/L;CD4 +:25.20 -59.26 g/L,31 .27 -72.91 g/L,28.44 -82.66 g/L;CD8 +:7.30 -36.26 g/L, 9.1 3 -38.49 g/L,1 1 .09 -48.99 g/L;CD4 +/CD8 +:0.34 -4.58,0.34 -4.58,0.32 -3.80;CD1 9 +:3.95 -27.59 g/L,4.04 -30.94 g/L,4.08 -38.70 g/L;NK cell:1 .34 -6.64 g/L,2.88 -8.92 g/L,3.07 -9.35 g/L;IgA:0.000 4 -0.039 6 g/L,0.000 0 -0.069 0 g/L,0.000 0 -0.069 0 g/L;IgM:0.001 6 -0.1 58 4 g/L,0.020 0 -0.1 40 0 g/L,0.020 0 -0.420 0 g/L;IgG:3.22 -1 0.98 g/L,1 .1 0 -1 4.62 g/L,5.00 -1 3.66 g/L.Moreover the ca-ses with Dexamethasone treatment were as follows:the late -preterm infants CD8 + 1 0.35 -40.33 g/L,NK 3.1 0 -9.46 g/L,term NK 6.60 -9.50 g/L;those in without Dexamethasone treatment:the late -preterm infants CD8 +8.42 -34.96 g/L,NK 2.94 -7.80 g/L,term NK 2.98 -8.94 g/L;according to gender,the males in the late -pre-term infants CD8 + 8.26 -35.66 g/L,term CD3 + 51 .90 -92.94 g/L;females in the late -preterm infants CD8 +1 1 .08 -40.68 g/L,term CD3 + 61 .1 0 -96.1 4 g/L.Conclusions Testing values of neonatal T lymphocyte subsets and IgG,IgA,IgM levels in 24 -hour newborns in Guangxi disperse largely and show some differences among the early -preterm neonates,the late -preterm neonates and the term neonates,and maternal Dexamethasone treatment during pregnancy and gender play a role in neonatal immunity.

Objective To investigate the diagnostic correlation and sensitivity of amplitude integrated electroencephalogram (aEEG),brainstem auditory evoked potential (BAEP) and cranial magnetic resonance imaging (MRI) for acute bilirubin encephalopathy (ABE) in the newborn.Method Term and near-term neonates (gestational age ≥ 35 weeks) with hyperbilirubinemia (the level of bilirubin over than 95th percentile) of high and intermediate risk group admitted in the neonatal ward of Guangxi Maternal and Child Health Care Hospital from Jan 2014 to Dec 2015 were recruited retrospectively.The infants were assigned to ABE group and non-ABE group according to the diagnostic criteria of ABE.The clinical data of the newborns were collected and the diagnostic correlation between clinical diagnosis and aEEG,BAEP and cranial MRI were analyzed.The receiver operating characteristic (ROC) curve was adopted to assess the diagnostic efficiency of the peak level of serum bilirubin,aEEG,BAEP and cranial MRI on the early diagnosis of ABE.Result A total of 152 newborns with hyperbilirubinemia were recruited,including 33 cases in the ABE group and 119 cases in non-ABE group.(1) The results of aEEG and MRI were marginally positively correlated with clinical diagnosis of ABE (aEEG:r =0.487,P ＜ 0.001;MRI:r =0.220,P=0.018),while the results of BAEP were closely related to the clinical diagnosis of ABE (r =0.593,P ＜ 0.001);(2) The results of BAEP and MRI on the diagnosis of ABE were positively correlated with those of aEEG (BAEP:r =0.424,P ＜ 0.001;MRI:r =0.307,P ＜ 0.001).(3) The area under the ROC curves for predicting the onset of ABE were 0.899 for the peak level of serum bilirubin,0.767 for BAEP,0.738 for aEEG and 0.590 for MRI.Conclusion There was the correlation on the diagnosis of ABE among the methods of aEEG,BAEP and MRI.The combined diagnosis of the three methods could play a complementary role.The aEEG contributed to the early diagnosis of ABE with high sensitivity.

OBJECTIVETo assess the antitumor efficacy and adverse effects of bortezomib either used alone or in combination with arsenic trioxide for transplanted tumor in nude mice.

METHODSNude mice bearing HL-60 cell xenografts were randomized into 4 groups to receive treatment with normal saline, bortezomib, arsenic trioxide, bortezomib plus arsenic trioxide. The tumor growth inhibition and general condition of the nude mice were observed, and in situ TUNEL assay and immunohistochemistry were performed on the transplanted tumors.

RESULTSBortezomib alone and in combination with arsenic trioxide could both inhibit the growth of the transplanted tumors, prolong the survival of the nude mice, and induce cell apoptosis and growth inhibition of the HL-60 cells in vivo, and the combined administration exhibited even better effects. The administration was well tolerated with causing manifest vital organ damages in the mice.

CONCLUSIONBortezomib in combination with arsenic trioxide has significant antitumor effect in nude mice bearing HL-60 cell xenografts possibly by inducing HL-60 cell apoptosis and growth inhibition without producing no significant adverse effects.

Animals ; Apoptosis ; drug effects ; Arsenicals ; pharmacology ; Boronic Acids ; pharmacology ; Bortezomib ; Cell Proliferation ; Disease Models, Animal ; HL-60 Cells ; Humans ; Leukemia ; drug therapy ; physiopathology ; Male ; Mice ; Mice, Nude ; Oxides ; pharmacology ; Pyrazines ; pharmacology ; Random Allocation ; Xenograft Model Antitumor Assays

OBJECTIVETo investigate the effect of bortezomib alone or combined with harringtonine (HT) or arsenic trioxide (As2O3) on the proliferation capacity and apoptosis of HL-60/ADM cell line and fresh cells from refractory/relapse acute leukemia patients.

METHODSHL-60/ADM cells or refractory/relapse leukemia cells were incubated with bortezomib at different doses alone and in combination with HT or As2O3. The proliferation capacity was observed by MTT assay, cell apoptosis by fluorescence microscopy and flow cytometry. Intracellular concentration of daunorubicin (DNR) was determined by flow cytometry.

RESULTSIn bortezomib-treated HL-60/ADM cells, the proliferation inhibition rate and apoptotic cells increased in a time- and dose-dependent manner. 40 nmol/L bortezomib could maximally inhibit the proliferation of HL-60/ADM cells at 48 hours. 15 micromol/L As2O3 or 752 nmol/L HT combined with different doses of bortezomib could inhibit proliferation and induce apoptosis of HL-60/ADM cells. The As2O3 plus bortezomib or HT plus bortezomib showed a greater anticancer efficacy than either of the drugs alone (P < 0.05, P < 0.01). Bortezomib (10 nmol/L) could markedly enhance the intracellular accumulation of DNR in HL-60/ADM cells (P < 0.05).

CONCLUSIONSBortezomib can inhibit proliferation and induce apoptosis of HL-60/ADM cells and fresh refractory/relapse acute leukemia cells, especially combined with HT or As2O3.

Adolescent ; Adult ; Antineoplastic Agents ; pharmacology ; Apoptosis ; drug effects ; Arsenicals ; pharmacology ; Boronic Acids ; pharmacology ; Bortezomib ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Child ; Drug Resistance, Multiple ; Drug Resistance, Neoplasm ; Female ; HL-60 Cells ; Harringtonines ; pharmacology ; Humans ; Male ; Oxides ; pharmacology ; Pyrazines ; pharmacology ; Young Adult

OBJECTIVETo examine the effects of high and low concentrations of transforming growth factor (TGF) β(1) and insulin-like growth factor-I (IGF-I) on the extracelluar matrix synthesis of the self-assembled constructs of temporomandibular joint (TMJ) disc.

METHODSThe experimental groups of self-assembled constructs were exposed to IGF-I (10, 100 µg/L) and TGF-β(1) (5, 50 µg/L), the control groups were not added with any growth factors. All groups were examined at 3 and 6 weeks for gross morphological, histological, and biochemical changes. Safranin-O/fast green staining was used to examine glycosaminoglycan (GAG) distribution, picrosirius red and immunohistochemical staining to observe type I collagen distribution. Type I collagen contents were tested by ELISA assay kit, GAG contents were measured by Blyscan GAG assay kit, and the cell numbers were quantified with a Picogreen reagent kit.

RESULTSThe growth factor groups all upregulated the matrix synthesis of the self-assembled constructs compared with control groups. TGF-β(1) (5 µg/L) and IGF-I (10 µg/L) were the two most potent concentration in increasing type I collagen and GAG synthesis and cells proliferation. IGF-I group (10 µg/L) produced nearly 2 times (109.16 ± 5.12 µg) as much type I collagen as the control group (69.13 ± 5.94 µg) at 3 weeks. The matrix contents and the number of the proliferated cells in control group and all GF groups at 6 weeks were more than those at 3 weeks.

CONCLUSIONSIGF-I (10 µg/L) is the most beneficial growth factor and can be applied in tissue-engineering stratigies of the temporomandibular joint disc. At the same time, the exposure time of growth factors is another key factor that affects matrix synthesis of TMJ disc constructs.

Animals ; Cell Proliferation ; drug effects ; Cells, Cultured ; Collagen Type I ; biosynthesis ; Extracellular Matrix ; metabolism ; Glycosaminoglycans ; biosynthesis ; Goats ; Insulin-Like Growth Factor I ; pharmacology ; Temporomandibular Joint Disc ; cytology ; metabolism ; Tissue Engineering ; methods ; Transforming Growth Factor beta1 ; pharmacology

The traditional costicartilage analysis inspection is limited to morphological inspection. In recent years, with the development of forensic radiology and molecular genetics, the costicartilage analysis inspection technology has been further enriched and developed. At present, the costicartilage analysis inspection technology have been able to be used in the practice of forensic medicine. This paper reviews the research advances about the costicartilage analysis inspection technology in the identification of human gender, age and so on in order to provide the references for forensic appraisers.
Age Determination by Skeleton/methods* ; Age Factors ; Calcification, Physiologic ; Cartilage/physiology* ; DNA/isolation & purification* ; DNA Fingerprinting/methods* ; Female ; Forensic Anthropology ; Forensic Medicine/methods* ; Humans ; Male ; Polymerase Chain Reaction/methods* ; Ribs/physiology* ; Sex Characteristics ; Sex Determination Analysis/methods*

Benzene is an established leukotoxin and leukemogen in humans. We have previously reported that exposure of workers to benzene and to benzene metabolite hydroquinone in cultured cells induced DNA-dependent protein kinase catalytic subunit (DNA-PKcs) to mediate the cellular response to DNA double strand break (DSB) caused by DNA-damaging metabolites. In this study, we used a new, small molecule, a selective inhibitor of DNA-PKcs, 2-(morpholin-4-yl)-benzo[h]chomen-4-one (NU7026), as a probe to analyze the molecular events and pathways in hydroquinone-induced DNA DSB repair and apoptosis. Inhibition of DNA-PKcs by NU7026 markedly potentiated the apoptotic and growth inhibitory effects of hydroquinone in proerythroid leukemic K562 cells in a dose-dependent manner. Treatment with NU7026 did not alter the production of reactive oxygen species and oxidative stress by hydroquinone but repressed the protein level of DNA-PKcs and blocked the induction of the kinase mRNA and protein expression by hydroquinone. Moreover, hydroquinone increased the phosphorylation of Akt to activate Akt, whereas co-treatment with NU7026 prevented the activation of Akt by hydroquinone. Lastly, hydroquinone and NU7026 exhibited synergistic effects on promoting apoptosis by increasing the protein levels of pro-apoptotic proteins Bax and caspase-3 but decreasing the protein expression of anti-apoptotic protein Bcl-2. Taken together, the findings reveal a central role of DNA-PKcs in hydroquinone-induced hematotoxicity in which it coordinates DNA DSB repair, cell cycle progression, and apoptosis to regulate the response to hydroquinone-induced DNA damage.
Apoptosis ; drug effects ; physiology ; Benzene ; toxicity ; Catalysis ; Chromones ; pharmacology ; DNA Damage ; drug effects ; genetics ; DNA Repair ; drug effects ; physiology ; DNA-Activated Protein Kinase ; antagonists & inhibitors ; metabolism ; Humans ; K562 Cells ; Morpholines ; pharmacology ; Protein Subunits

Objective To investigate the effects of different dialysates on expression of protein kinase C-? (PKC?) and apoptosis of U937 cell line. Methods Different dialysates were added into culture fluid with U937 cell line at exponential phase of growth, and groups were divided: fluid A+fluid B group (dialysate A+dialysate B), fluid A+fluid B+rottlerin (PKC? specific inhibitor)group, fluid A+powder B group (dialysate A+powder B) and fluid A+powder B + rottlerin group. Besides, blank control group and normal control group were established. Cells were harvested 24 h and 48 h after treatment, morphological changes were observed by Hoechst33258 fluorescence staining, cell apoptosis was measured by Annexin-V-FITC/PI double staining, and expression of PKC? mRNA and protein was detected by RT-PCR and Western blotting, respectively. Results Cell apoptosis significantly increased in fluid A+powder B group, with typical morphology of apoptosis. After treatment for 24 h and 48 h, cell apoptosis rates in fluid A+powder B group were significantly higher than those at corresponding time points in blank control group, normal control group and fluid A+powder B+rottlerin group (P0.05). Conclusion Fluid A+powder B can significantly increase apoptosis of U937 cell line, the mechanism of which may be associated with the up-regulation of expression of PKC?. Compared with fluid A+powder B, fluid A+fluid B is superior in reducing apoptosis of peripheral blood monouclear cells.