OBJECTIVE:To investigate the effects of different doses of sufentanil citrate on hemodynamic indexes and stress response indexes of Crouzon syndrome children with craniofacial reconstruction. METHODS:60 cases of Crouzon syndrome under-going craniofacial reconstruction were selected from our hospital during Jan. 2010-Jan. 2016,and then randomly divided into group A,group B and group C,with 20 cases in each group. 3 groups were given pump injection of Propofol injection 4-8 mg/(kg·h)for anesthesia induction+Sufentanil citrate injection [group A 0.3 μg/(kg·h),pump injection;group B 0.6 μg/(kg·h),pump injection;group C 1.0 μg/kg,iv,0.5 h/time] for anesthesia maintenance, Cisatracurium besilate for injection 0.1 mg/kg,iv,every 40 min, drug withdrawal 5 min before the end of surgery. The hemodynamic indexes(MAP,HR)and stress response indexes(ACTH,cor-tisol)were observed in 3 groups at different time points as well as the occurrence of ADR. RESULTS:MAP levels of group C at 5 min after skin incision,1 h after operation and immediately at the end of surgery were significantly higher than before anesthesia, while those of group B were significantly higher than group C at same time points. HR of group A at 1 h after surgery and that of group B at 5 min after skin incision and 1 h after surgery were significantly higher than before anesthesias;HR of group B at 1 h after surgery was significantly lower than that of group A,and its HR at 5 min after skin incision and 1 h after surgery were signifi-cantly lower than those of group C. ACTH levels of 3 groups at 5 min after skin incision,1 h after surgery and immediately after the end of surgery were significantly higher than before anesthesia. ACTH levels of group B at 5 min after skin incision,1 h after surgery and immediately after the end of surgery were significantly lower than those of group A and C,and the group A was signifi-cantly lower than the group C at same time points. Cortisol levels of group A at 1 h after surgery,and those of group C at 5 min af-ter skin incision,1 h after surgery and immediately after the end of surgery were significantly higher than before anesthesia. Corti-sol levels of group B at 1 h after surgery were significantly lower than those of group A;cortisol levels of group A at 5 min after skin incision and immediately after the end of surgery and those of group B at 5 min after skin incision,1 h after surgery and imme-diately after the end of surgery were all significantly lower than those of group C. There were statistical significance all above(P<0.05). No obvious ADR was found in 3 groups. CONCLU-SIONS:Pump injection of sufentanil citrate 0.6 μg/(kg·h) can maintain analgesic effect of Crouzon syndrome children with craniofacial reconstruction,can keep hemodynamics sta-ble and effectively inhibit stress response during surgery with good safety.

Objective To investigate the expression of scaffold protein palladin in pancreatic ductal adenocarcinoma (PDAC) tissues and to discuss its clinicopathological significance.Methods 56 samples of PDAC and corresponding adjacent normal pancreas (NP) tissues were collected.Another 10 samples of chronic pancreatitis (CP) tissues were collected.Western blot analysis and immunohistochemistry assay were performed to detect the expression of protein palladin.The correlation of palladin expression with clinicopathological factors of PDAC was analyzed.Results Western blot analysis revealed that the expression of palladin in PDAC,CP and NP tissues were respectively 0.93±0.07,0.41±0.07 and 0.20±0.06,and the expression of palladin was significantly increased in PDAC tissues compared with NP and CP tissues (P ＜ 0.05),and its expression was significantly increased in CP tissues compared with NP tissues (P ＜ 0.05).Immunohistochemical staining showed that palladin was mainly expressed in activated myofibroblasts in PDAC tissues.The rate of palladin expression was 79 ％ (44/56),which was higher than that in NP tissues (2/10) and CP tissues (4/10),and its expression was found to be correlated with the degree of tumor differentiation,lymph node metastasis and clinical TNM classification (P ＜ 0.05),and it had no correlation with patient' s sex,age,tumor location and distant metastasis (P ＞ 0.05).Conclusions Scaffold protein palladin is highly expressed in PDAC tissues,and it is expressed in the activated myofibroblasts within tumor microenvironment.Scaffold protein palladin may be involved in the invasion and metastasis of PDAC.

Objective To investigate the effect of MicroRNA (miRNA) let-7i on differentiation ofglioma U251 stem cells and the potential mechanisms.Methods Glioma U251 cells were cultured in vitro and CD133 positive cells were sorted by magnetic cell separation.Composite let-7i mimics and let-7i controls were transfected into U251 cells; the let-7i expression was detected by real time-PCR; the expressions ofCD133,nestin and LIN28 were detected by Western blotting; the differentiation status was assessed via glial fibrillary acidic protein (GFAP) immunocytochemistry.Composite LIN28 siRNA and siRNA control were transfected into U251 cells; the expressions of CD133 and nestin were detected by Western blotting.Targetscan software analysis and luciferase reporter system were employed to verified the possibility of LIN28 being the target gene of let-7i.Results let-7i in the U251 cells were over-expressed in group of let-7i mimics,enjoying 17.9 fold of group of let-7i control; the expressions of CD 133,nestin and LIN28 were 13.9％,43.7％ and 53.6％,separately,of group of let-7i control; GFAP positive labeling index in group oflet-7i mimics (83.0±1.93)％ was significantly higher than that of group oflet-7i control (39.7±6.73)％ (P＜0.05).The expressions of CD133 and nestin in group of LIN28 siRNA decreased to 23.7％ and 37.9％ of those in groups of siRNA control.LIN28 3'UTR existed let-7i paired binding sites and LIN28 could be the target gene of let-7i.Conclusion over-expressing let-7i could significantly down-regulate the expressions of CD133 and nestin,and enhance the glioma stem cell differentiation through the potential mechanism of down-regulating the expression of LIN28.

OBJECTIVETo observe the impact of plant sterol esters (PSE) mixed in low fat milk powder (2.5 g of PSE/day) on plasma cholesterol levels in hypercholesterolemic subjects during a 6-week intervention period.

METHODSIn this double-blind, randomized, placebo-controlled study, 59 subjects (19 males, mean age (60.28 ± 6.98) years) with primary hypercholesterolemia (fasting LDL cholesterol between 3.4-6.0 mmol/L) were randomly divided into two groups (treatment group, 2.5 g of plant sterol esters a day, n = 30) and placebo group (n = 29). Blood samples were collected at week 0, 3 and 6. The primary outcome was change in plasma LDL-cholesterol (LDL-C). Secondary outcomes were changes in total cholesterol (TC), HDL cholesterol (HDL-C), triglycerides (TG), anthropometry and blood biochemistry.

RESULTSLDL-C significantly reduction from baseline (4.18 ± 0.54) mmol/L to (3.44 ± 0.61) mmol/L (-17.7%, P < 0.05) at week 3 and (3.35 ± 0.39) mmol/L (-19.9%, P < 0.05) at week 6 in the treatment group, whereas in placebo group from (4.11 ± 0.54) mmol/L at baseline to (3.47 ± 0.60) mmol/L (-15.57%, P < 0.05) and (3.61 ± 0.39) mmol/L (-12.17%, P < 0.05) at week 3 and week 6, respectively. TC was reduced from (6.30 ± 0.86) mmol/L at baseline to (5.92 ± 0.75) mmol/L (-6.03%, P > 0.05) at week 3 and (5.43 ± 0.77) mmol/L (-13.8%, P < 0.05) at week 6 in treatment group, from (6.20 ± 0.76) mmol/L at week 0 to (5.70 ± 0.76) mmol/L (-8.06%, P < 0.05) at week 3 and (5.84 ± 0.75) mmol/L (-5.81%, P < 0.05) at week 6 in placebo group. PSE-enriched milk did not affect plasma HDL-C level and TG level at both week 3 and week 6. After normalization to the placebo group, the treatment group showed significant reduction in LDL-C and total cholesteron after 6 weeks. The observed difference of reduction was 7.69% (-0.33 mmol/L, P < 0.05) for LDL-C and 8.00% (-0.51 mmol/L, P < 0.05) for TC between the two groups. There were no significant changes in safety parameters, including blood biochemistry tests during the study period.

CONCLUSIONPlant sterol ester enriched milk powder is effective in reducing LDL-C among Chinese hypercholesterolemic subjects at a dosage recommended by EFSA.

Animals ; Cholesterol ; Cholesterol, HDL ; Cholesterol, LDL ; Double-Blind Method ; Female ; History, 18th Century ; Humans ; Hypercholesterolemia ; diet therapy ; Lipids ; Male ; Middle Aged ; Milk ; Phytosterols ; pharmacology ; therapeutic use ; Triglycerides

OBJECTIVETo establish red-green dual-color fluorescence glioma model in nude mice and to explore its practical values.

METHODSCM-DiI-stained rat glioma C6 cells (C6-CM- DiI cells) expressing red fluorescence were inoculated into the brain of athymic nude mice expressing green fluorescence protein (NC-C57BL/6J-EGFP). Then the whole-body dual-color fluorescence imaging was detected dynamically. Finally whole brains of the tumor-bearing mice were removed and 5 µm thick serial frozen slices were made. Light microscopy, fluorescence microscopy and confocal laser scanning microscopy were performed to observe the transplanted tumor tissue structure and fluorescent cells.

RESULTSTumor mass with red fluorescence increased gradually under continuous in-vivo fluorescence imaging monitoring. Under the fluorescence microscope, cells with red, green and yellow fluorescence were observed in the frozen sections of transplanted tumor tissue and the mutual structural relationship among them could be defined. The tumor cells migration, implantation and cell fusion between transplanted tumor cells and host cells could be observed. It could be distinguished according to the fluorescence, that blood vessels of tumor-origin displayed red fluorescence, blood vessels of host-origin displayed green fluorescence and mosaic blood vessels appeared yellow fluorescence. It was depicted that host innate astrocytes and oligodendrocytes in the microenvironment at the tumor periphery could be activated and dedifferentiated into nestin-positive cells.

CONCLUSIONSIn contrast to traditional animal model, the dual-color fluorescence imaging of nude mouse models of glioma possesses enormous advantages in investigating tumor mass in-vivo fluorescence imaging, tumor cells migration and metastasis, tumor angiogenesis and reactive activation of host innate cells in the microenvironment at tumor periphery, thus, has highly practical application value.

Animals ; Astrocytes ; metabolism ; Brain Neoplasms ; blood supply ; metabolism ; pathology ; ultrastructure ; Carbocyanines ; metabolism ; Cell Fusion ; Cell Line, Tumor ; Cell Movement ; Disease Models, Animal ; Fluorescent Dyes ; metabolism ; Glioma ; blood supply ; metabolism ; pathology ; ultrastructure ; Green Fluorescent Proteins ; metabolism ; Luminescent Proteins ; metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Nude ; Microscopy, Confocal ; Microscopy, Fluorescence ; Neoplasm Transplantation ; Neovascularization, Pathologic ; Nestin ; metabolism ; Oligodendroglia ; metabolism ; Rats

The research on relation between cancer and adaptive immunity is developing in depth. One of its signs is to optimize the key molecules and their pathways for regulating adaptive immunity through high-throughput molecular bioinformatics analysis. Based on the fact that cancer is an uncontrolled inflammation, adaptive immune-related cells are the main members driving the development of controllable inflammation to non-controllable inflammation, and the research on its molecular regulatory mechanism is a hot topic nowadays. Based on the in-depth sequencing database and bioinformatics analysis of the non-controllable growth (malignant transformation) of these adaptive immune-related cells, the research progress of Toll-like receptors and chemokines is summarized as follows.