0.999,the limits of detection of five ultraviolet absorbents were 4 to 6 mg/L and the minimum detectable concentration was 0.01%-0.015%.The rates of recovery for this method ranged from 98.35% to 102.75% and the relative standard deviations of this method were 0.44% to 1.73%.Conclusion The method is simple,rapid,accurate and applicable to simultaneous determination of the five ultraviolet absorbents in cosmetics.

Objective To report computer-aided three-dimensional visualization of simulated surgery for distal femoral fractures using software Unigraphics NX and Mimics. Methods The preoperative CT scans of 6 patients with distal femoral fractures were used for three-dimensional reconstruction of distal femoral fractures using software Mimics. Three-dimensional reconstruction of the surgical instruments using the modeling function of software Unigraphics NX. The assembly function of software Unigraphics NX was used to vi-sualize the simulated internal fixations of distal femoral fractures with both Less Invasive Stable System plates and the retrograde nails. The operative procedures simulated by the software Unigraphics NX were analyzed preoperatively. Results The simulated operative procedures were clearly and vividly visualized in three-dimensions, The fracture reduction and operative effects could be predicted. Conclusion This system of three-dimensional visualization of simulated surgery for distal femoral fractures using software Unigraphics NX and Mimics can help surgeons make preoperative predictions and select reliable methods to improve the reliability and effectiveness of the orthopaedic surgery.

BACKGROUND:At present, finite element analysis technology can set up the model, predict diagnosis, treatment design, as wel as surgical plan, and can be used in the treatment of necrosis of femoral head. OBJECTIVE:To sum and discuss recent progress in clinical and experimental research regarding biomechanical study in osteonecrosis of femoral head by using finite element analysis. METHODS:A computer-based retrieval was performed by the authors (Hong Guo-ju and Zhou Guang-quan) in PubMed, Google, SpringerLink, ChinaNational Knowledge Infrastructure databases for literatures published from January 2010 to December 2015. The key words were“(finite element analysis OR finite element) AND (osteonecrosis OR osteonecrosis of femoral head)”. Inclusive criteria:studies with contents closely related to this paper;original papers with reliable topics and evidence;or papers with clear points and al-round analysis and both studies in vitro and in vivo. RESULTS AND CONCLUSION:A total of 27 studies were included. The articles in the latest five years related to femoral head osteonecrosis and finite element analysis application were concentrated on. We summarized the latest research progress and problems, including the applied research carried out in the femoral head osteonecrosis clinical cases, innovational skil s, so as to point out the direction of future research in the finite element analysis.

Objective To explore the clinical value of AFP-L3,GP73 and GGT as biomarkers in diagnosis of hepatocellular carcinoma (HCC).Methods According to the pathological diagnosis,141 patients were divided into two groups,HCC group were 74 cases,benign liver disease group were 67 cases.Use ELISA method tested the serum AFP-L3 and GP73 levels.The GGT level was detected by the automatic biochemical instrument of all the 141 patients.AFP-L3,GP73 and GGT concentration difference was compared between the two groups.ROC curve was used to determine the cut-off level to diagnose HCC.The value of single use AFP-L3,GP73,GGT and joint the three indexes to diagnose HCC were analyzed.Results The average level of AFP-L3 in the patients with HCC was (113.58±63.62) μg/L,it was significantly higher than that in the patients with benign liver diseases [(23.19±34.54) μg/L] (P ＜ 0.001).The area under the ROC curve of AFP-L3 level was 0.802.Taking AFP-L3 level ≥ 38.47 μg/L as diagnostic criteria,the sensitivity of AFP-L3 level in HCC diagnosis was 81.08 ％ and the specificity was 88.06 ％.The average level of GP73 in the patients with HCC was (126.55±49.56) μg/L,it was significantly higher than that in the patients with benign liver diseases [(56.97±26.48) μg/L] (P ＜ 0.001).The area under the ROC curve of GP73 level was 0.811.Taking GP73 level≥69.44 μg/L as diagnostic criteria,the sensitivity of GP73 level in HCC diagnosis was 75.68 ％ and the specificity was 91.04 ％.The average level of GGT in the patients with HCC was (173.20±179.18) U/L,it was significantly higher than that in the patients with benign liver diseases [(90.77±81.53) U/L] (P ＜ 0.001).The area under the ROC curve of GGT level was 0.713.Taking GGT level ≥ 110.77 U/L as diagnostic criteria,the sensitivity of GGT level in HCC diagnosis was 74.32 ％ and the specificity was 77.61％.Joint use AFP-L3,GP73 and GGT to diagnose HCC,the sensitivity was 83.78 ％,specificity was 92.53 ％.Conclusion Combined detection of tumor markers AFP-L3,GP73 and GGT can improve the positive rate of HCC,which has good clinical application value.

Objective To observe the effects of methionine enkephalin (M-Enk) on migration of macrophages from mice with impaired liver and its immunomodulatory mechanisms. MethodsLiver of mice was impaired by feeding CCl4 and macrophage migration inhibitory factor (MMIF) was produced by Con A-stimulated spleen lympho- cytes. Inhibition of macrophage migration was measured in reaction system by adding M-Enk. Results Migration of macrophages in both liver-impaired and control group were suppressed by MMIF, but the suppression might be re- versed by adding 1 μmol/L M-Enk (P＜0. 05). M-Enk could significantly inhibit in vitro both of the combination of MMIF with macrophages and production of MMIF from lymphocytes (P＜0. 01). Macrophages from liver-imparied group showed a higher sensitivity compared to the control group (P＜0. 05). ConclusionThe study suggests that opi- oid peptieds play an important role in the modulation of the immune response under stress as liver impairment.

Objective:To investigate the expression of SHIP1 in the patients with acute myeloid leukemia and its effect on the apoptosis of human leukemia cells.Methods:The expression of SHIP1 in the bone marrow of patients with acute myeloid leukemia was detected by Westem blot.U937 cells was transfected with SHIP1 expression vector (pEGFP-SHIP1 group) and empty vector control (pEGFP group) respectively,U937 cells without transfection were used as the control group.Flow cytometry was used to detect the apoptosis of the cells,the expression of SHIP1,Bcl-2,Bax,Akt,p-Akt were detected by western blot.Results:The expression of SHIP1 in the bone marrow of patients with acute myeloid leukemia was significantly lower than that of the normal human bone marrow SHIP 1 (P＜0.01).The SHIP1 and Bax expressions as well as the apoptotic rate ofpEGFP-SHIP1 group were significantly higher than those of the control group(P＜0.01),while the Bcl-2 and p-Akt expressions were significantly lower than those in the control group(P＜0.01).Conclusions:SH-P1 expression was down regulated in the bone marrow of patients with acute myeloid leukemia.SHIP1 could promote the apoptosis of human leukemia cells via Akt signaling pathway.

An electrochemical L-lactate biosensor was fabricated by combining Platinum nanoparticles (Pt-nano) with multi-walled carbon nanotubes(MWCNTs).L-lactate oxidase(LOD) was immobilized on the surface of the glassy carbon electrode (GCE) modified with MWCNTs and Pt-nano.The surface of resulting LOD/MWCNTs/Pt-nano electrode was covered by a thin layer of sol-gel to avoid the loss of LOD and to improve the anti-interference ability.The cyclic voltammetric results indicated that MWCNTs/Pt-nano catalyst displayed a higher performance than MWCNTs.Under the optimized conditions, i.e., applied potential of 0.5 V, pH 6.4, 25 ℃, the proposed biosensor's determination range was 0.2-2.0 mmol/L, response time was within 5 s, and the sensitivity was 6.36 (A/(mmol/L).It still kept 90% activity after 4 weeks.The fabricated biosensor had practically good selectivity against interferences.The results for whole blood samples analyzed by the present biosensor showed a good agreement with those analyzed by spectrophotometric method.

Objective:To investigate the correlation of excessive platelet (Plt) recovery at the first time of achieving morphologic complete remission (CR) after induction chemotherapy with minimal residual disease (MRD) and the clinical features of acute myeloid leukemia (AML).Methods:The clinical data of newly-treated 57 AML patients (except for acute promyelocytic leukemia) who achieved CR after induction chemotherapy in Jinjiang People's Hospital from January 2016 to December 2021 were retrospectively analyzed. A total of 57 newly diagnosed adult AML patients were divided into excessive Plt recovery group (Plt recovery>350×10 9/L) and normal Plt recovery group [Plt recovery: (100-350)×10 9/L] according to the Plt recovery. Meanwhile, the MRD was analyzed by using multiparameter flow cytometry (MFC) in patients achieving CR after receiving 1 course of standard treatment regimen or 1-2 courses of demethylation drugs combined with pre-conditioning regimen. The clinical features and negative rate of MRD between the two groups were compared. Results:Among 57 CR patients, 31 (54.4%) patients had CR with excessive Plt recovery and MFC-MRD negative rate was 67.7% (21/31); 26 (45.6%) had CR with normal Plt recovery and MFC-MRD negative rate was 38.5% (10/26); and the difference in the proportion of MRD negative patients between the both groups was statistically significant ( χ2 = 4.89, P = 0.027). There were no statistically differences in the proportions of patients with different gender, age, WBC at initial diagnosis, Plt, chemotherapy regimen and risk degree classification between the two groups (all P > 0.05). Conclusions:In AML patients, excessive Plt recovery at the first time of achieving morphologic CR after induction chemotherapy is associated with negative MRD, which has a certain value in the judgement of therapeutic effect.

Objective To establish a rat model of glucocorticoid-induced osteoporosis(GIOP)and to explore the interventional effect of the Chinese medicine Fufang Zhenzhu Tiaozhi(FTZ)capsules on regulation of mitogen-activated protein kinase kinase kinase 2(MEKK2)-Wnt coupling and inhibiting β-catenin ubiquitination, and to investigate the effect of FTZ on the bone mineral density and cell osteogenic ability. Methods SPF male rats were randomly divided into normal control group,methylprednisolone group(model group),methylprednisolone + saline group(blank control group) and methylprednisolone + FTZ group(experimental group). The proximal femoral cancellous bone was examined by mi-cro-CT and histopathology,and assessment of expressions of Wnt3a,MEKK2,and β-catenin proteins. Bone mesenchymal stem cells(BMSCs were isolated and treated with serum containing FTZ,stained by alkaline phosphatase and alizarin red. The expressions of osteogenic differentiation-related genes ALP,Runx2 and OCN,the expressions of MEKK2 and β-catenin proteins,and the transcription level of β-catenin/TCF were determined. Results 1)The micro-CT imaging showed that compared with the control group, the BV/TV, Tb.Th and Tb/N expressions were significntly decreased, and Tb/sp in-creased in the experimental group(P<0.05). Region of interest(ROI)three-dimensional reconstruction of trabecular bone in the experimental group showed improvement of bone trabeculae and local bone repair. 2)The pathology using he-matoxylin and eosin staining showed that in the experimental group,the bone trabecular density was higher than that of the model group,and observed a better trabecula morphology. 3)The Wnt3a,MEKK2 and β-catenin expressions in the exper-imental group were significantly increased compared with the model model(P<0.05). 4)After treated with FTZ and BMP2,the result of alkaline phosphatase and alizarin red staining indicated an enhanced osteogenic response(P<0.05) in the GIOP rat models. 5)After treatment with seum containing FTZ,The BMSCs isolated from the GIOP rats enhanced the transcriptional activity of β-catenin/TCF/LEF(P<0.05)and promoted the expression of β-catenin and MEKK2 pro-teins(P<0.05). Conclusions FTZ can ameliorate GIOP by regulating the MEKK2-Wnt coupling and inhibiting the β-catenin ubiquitination,and improve the bone microstructure.

Purpose: There is no optimal prognostic model for T-cell lymphoblastic lymphoma (T-LBL). Here, we discussed the predictive value of total metabolic tumor volume (TMTV) and total lesion glycolysis (TLG) measured on 18F-fluorodeoxyglucose positron emission tomography–computed tomography (PET-CT) in T-LBL. Materials and Methods: Thirty-seven treatment naïve T-LBL patients with PET-CT scans were enrolled. TMTV was obtained using the 41% maximum standardized uptake value (SUVmax) threshold method, and TLG was measured as metabolic tumor volume multiplied by the mean SUV. Progression-free survival (PFS) and overall survival (OS) were analyzed by Kaplan-Meier curves and compared by the log-rank test. Results: The optimal cutoff values for SUVmax, TMTV, and TLG were 12.7, 302 cm3, and 890, respectively. A high SUVmax, TMTV, and TLG indicated a shorten PFS and OS. On multivariable analysis, TMTV ≥ 302 cm3, and central nervous system (CNS) involvement predicted inferior PFS, while high SUVmax, TLG and CNS involvement were associated with worse OS. Subsequently, we generated a risk model comprising high SUVmax, TMTV or TLG and CNS involvement, which stratified the population into three risk groups, which had significantly different median PFS of not reached, 14 months, and 7 months for low-risk group, mediate-risk group, and high-risk group, respectively (p < 0.001). Median OS were not reached, 27 months, and 13 months, respectively (p < 0.001). Conclusion Baseline SUVmax, TMTV, and TLG measured on PET-CT are strong predictors of worse outcome in T-LBL. A risk model integrating these three parameters with CNS involvement identifies patients at high risk of disease progression.