Objective To discuss treatments of femoral intertrochanteric fractures by external fixators which can prevent complications caused by lying in bed for long periods after operation. Methods After proper closed reduction had the fragments maintained in good position, the fracture was fixed by external fixators through closed pinning under the roentgenoscopy. After the operation the patients with femoral intertrochanteric fractures could conduct early exercises to recover the functions of the fractured limb. Results Compared with traction or inner fixation, this method to treat femoral intertrochanteric fractures showed significant superiority in trauma, healing time, expenditure, functional recovery and complications for the majority of the patients. Conclusion The external fixators are recommendable for patients with femoral intertrochanteric fractures when their bone matrix and physical conditions are good enough.

Objective To assess the efficacy of NaClO irrigation of root canal at different temperatures.(Methods Thirty) human teeth with single root-canal mandible premolar were instrumented using standard technique,then were divided into 3 groups,carrying on root-canal irrigation.group A: 5.25% NaClO+System B,group B:5.25% NaClO+15% EDTA,group C:5.25% NaClO+System B+15% EDTA.After the teeth root were split,the scanning electron microscope was used to observe the coronal third,middle third and apical third parts.(Results The) amount of remaining debris on root canal wall in group C decreased significantly,compared with group A and B.The differences of coronal third and middle third between group A and B,group B and C,group A and C were significant(P0.05),but there were significant differences between group A,B and C(P

BACKGROUND:Severely curved root canal preparation is the difficulty during clinical root canal preparation, and improper preparation may induce complications such as stage, root canal offset and apical open, which affect the quality of root canal preparation and apical closure. Therefore, it is important to choose a root canal preparation instrument which has the best cutting and forming ability. OBJECTIVE: To compare the shaping ability of Mtwo nickel-titanium rotary instruments, K3 nickel-titanium rotary instruments and stainless steel K-files for the preparation of curved root canals. METHODS:A total of 30 severely curved root canals of freshly extracted human maxilary molars were randomly divided into three groups, with 10 canals in each group. The canals were prepared by Mtwo instruments, K3 instruments and K-files, respectively. The instrument’s tip location in pre- and post-instrumentation radiographs of the three groups was recorded; the changes of root curvature, working length and working time in the three groups were measured and compared. RESULTS AND CONCLUSION:The root curvature showed no significant difference in the three groups before preparation (P> 0.05). The changes of root curvature after root preparation in Mtwo instrument and K3 instrument groups were significantly less than that in K-files group (P < 0.01), and no significant difference was found between Mtwo instrument group and K3 instrument group (P > 0.05). The root canal preparation time in the three groups showed significant differences (P < 0.01), which was the shortest in Mtwo instrument group and the longest in K-files group. The changes of working length after root preparation in the three groups showed no significant difference (P > 0.05). Mtwo nickel-titanium rotary instruments and K3 nickel-titanium rotary instruments are have high efficacy and strong shaping ability in preparing curved root canals.

Objective To investigate the influence of transforming growth factor-?1(TGF-?1) on macrophage scavenger receptor (ScR) class A and B(ScR-B,CD36) in order to provide theoretical foundation for expounding the formation and therapy of atherosclerosis(AS).Methods THP-1 derived macrophages were divided into control group and experimental group,the cells in experimental group were treated with 3.0 mg?L-1Anti TGF-?1 Ab,the cells in control group were treated with 3.0 mg?L-1 IgG. The 125I-acetylated low density lipoprotein (125I-Ac-LDL for ScR-A) and 125I-oxidized low density lipoprotein (125I-Ox-LDL for CD36) uptaking (including 4℃ binding,37℃ association and degradation) were measured respectively.Influence of anti TGF-?1 antibody (Anti TGF-?1 Ab) on the ScR-A and CD36 mRNA expressions in THP-1 derived macrophages was measured meanwhile,respectively.Results Compared with control group ( binding: 8.23 ?g?g-1 ?1.24 ?g?g-1 protein,association:45.69 ?g?g-1 ?6.92 ?g?g-1 protein,and degradation: 112.18 ?g?g-1 ?20.15 ?g?g-1 protein),Anti TGF-?1 Ab increased 125I-Ac-LDL binding(48.67 ?g?g-1 ?6.52 ?g?g-1 protein),association (412.30 ?g?g-1?12.21 ?g?g-1 protein),and degradation (896.48 ?g?g-1 ?32.74 ?g?g-1 protein) significantly (P

Objective To assess the series of special anti-fatigue foods including JuntiⅠ, JuntiⅡ, JuntiⅢ, and Jun-tiⅣon military physical performance capacity .Methods Fifty-four soldiers , selected from a border defense troop , were randomly designated to control group , trial group 1 and trial group 2.Subjects of two trial groups were supplied with No .1 nutritional package ( including JuntiⅠ, Ⅲand Ⅳ) and No.2 nutritional package ( including Junti Ⅱ, Ⅲand Ⅳ),re-spectively, while no additional nutritional supplements were added in control group .After 7 days’ supplementation, a hard military exercise was performed to induce fatigue and an increasing load test was used to assess physical activity .RPE scale, exhaustive time and time taken to reach the 75% maximal heart rate were recorded while serum markers , such as glucose, lactate, BUN, LDH,and CK, were detected after test .Moreover, serum lactate and fatigue recovery scale were determined on the evening of the same day and the next morning .Results Prolonged exhaustive time and time taken to reach the 75%maximal heart rate and elevated RPE scores at 6 min were detected in both two trial groups compared with the control group .Meanwhile , after the increasing load test , elevated glucose concentration and reduced lactate , BUN, LDH and CK were also observed in both trial groups .Moreover, serum lactate of both trial groups was quickly recovered on the evening of the same day compared with the control group , and the next morning , serum lactate was even much lower in trial groups than in control group .The fatigue recovery scores were higher in trial groups at both time points .Meanwhile, there was no difference of such indexes between the two trial groups .Conclusion Through the combination use , the series of special anti-fatigue foods, inclucling No.1 and No.2 nutritional packages , can significantly improve the soldiers′physi-cal performance capacity , delay the physical fatigue emergence , promote physical activity recovery and prevent military training injury.

Objective To compare the differences and clinical value of prognostic evaluation between American Joint Committee on Cancer (AJCC) TNM staging system 7th edition and 8th edition for gastric cancer (GC).Methods The retrospective case-control study was conducted.The clinicopathological data of 1 383 GC patients who were admitted to the First People's Hospital of Changzhou between January 2008 and August 2012 were collected.Distal gastrectomy,proximal gastrectomy + pyloroplasty or total gastrectomy were performed according to preoperative evaluation and intraoperative exploration.Observation indicators:(1) surgical and postoperative situations;(2) follow-up and survival situations;(3) T staging comparison between AJCC TNM staging system 7th edition and 8th edition;(4) N staging comparison of AJCC TNM staging system 8th edition;(5) prognostic analysis in N staging of AJCC TNM staging system 8th edition;(6) TNM staging comparison between AJCC TNM staging system 7th edition and 8th edition;(7) prognostic analysis in different TNM staging between AJCC TNM staging system 7th edition and 8th edition.Follow-up using outpatient examination and telephone interview was performed to detect postoperative survival up to October 2017.Measurement data with normal distribution were represented as x ± s.Measurement data with skewed distribution were described as M (range).The survival curve and survival rate were respectively drawn and calculated by the Kaplan-Meier method,and the Log-rank test was used for survival analysis.Results (1) Surgical and postoperative situations:1 383 GC patients underwent successful radical gastrectomy,including 923 with distal gastrectomy,165 with proximal gastrectomy and 295 with total gastrectomy.Of 1 383 patients,115 with postoperative complications were improved by symptomatic treatment,including 87 with surgical complications and 28 with non-surgical complications.Postoperative pathological examinations:total number of intraoperative lymph node dissection and number of lymph node metastasis were 25± 12 and 7±4;577 didn't have lymph node metastasis and 806 had regional lymph node metastasis;308 were in early GC and 1 075 in advanced GC.(2) Follow-up and survival situations:1 383 patients were followed up for 1-117 months,with a median time of 34 months.The 1-,3-and 5-year survival rates of 1 383 patients were respectively 90.5％,71.9％ and 61.1％.(3) T staging comparison between AJCC TNM staging system 7th edition and 8th edition:T staging definition between AJCC TNM staging system 7th edition and 8th edition was identical.T staging of 1 383 patients:308,192,65,628 and 190 were respectively detected in T1,T2,T3,T4a and T4b stagings.(4) N staging comparison between AJCC TNM staging system 7th edition and 8th edition:N staging definition between AJCC TNM staging system 7th edition and 8th edition was identical.N staging of 1 383 patients:577,255,207,230 and 114 were respectively detected in N0,N1,N2,N3a and N3b stagings.N3a and N3b were classified as N3 staging of AJCC TNM staging system 7thedition,but they were classified as independent staging of AJCC TNM staging system 8th edition.(5) Prognostic analysis in N staging of AJCC TNM staging system 8th edition:5-year survival rate of patients in N0,N1,N2,N3a and N3b stagings was respectively 85.6％,76.5％,59.4％,45.2％ and 32.5％ based on AJCC TNM staging system 8th edition,with a statistically significant difference in survival (x2 =394.400,P＜0.05).There was a statistically significant difference between N0 and N 1 stagings (x2 =45.630,P＜0.05),between N 1 and N2 stagings (x2 =19.470,P＜0.05),between N2 and N3a stagings (x2 =7.602,P＜0.05) and between N3a and N3b stagings (x2=13.020,P＜0.05).(6) TNM staging comparison between AJCC TNM staging system 7th edition and 8th edition:TNM staging of 366 patients had changes,including 2 in T1N3b staging,2 in T2N3b staging,18 in T3N3b staging,120 in T4aN2 staging,149 in T4aN3a staging,34 in T4bN0 staging and 41 in T4bN2 staging;364 were detected in staging Ⅲ in 7th edition and 8th edition,and sub-staging of staging Ⅲ had a change;2 in T1N3b of ⅡB staging were redistricted into Ⅲ B staging based on AJCC TNM staging system 8th edition.(7) Prognostic analysis in different TNM staging between AJCC TNM staging system 7th edition and 8th edition:according to 7th edition,cases and 5-year survival rate were respectively 247,89.5％ in Ⅰ A staging and 147,83.7％ in Ⅰ B staging and 77,75.9％ in ⅡA staging and 207,70.5％ in ⅡB staging and 136,61.0％ in ⅢA staging and 236,37.5％ in Ⅲ B staging and 333,35.4％ in Ⅲ C staging,with a statistically significant difference in survival among sub-stagings (x2 =228.800,P＜0.05).There was a statistically significant difference in survival among Ⅰ,Ⅱ and Ⅲ stagings (x2=189.000,P＜0.05) and between ⅢA and ⅢB or ⅢC stagings (x2=22.710,18.010,P＜0.05).There was no statistically significant difference in survival between Ⅰ A and Ⅰ B stagings (x2=0.179,P＞0.05),between Ⅱ A and Ⅱ B stagings (x2 =0.265,P＞0.05),and between Ⅲ B and Ⅲ C stagings (x2 =1.550,P＞0.05).According to 8th edition,cases and 5-year survival rate were respectively 247,89.5％ in Ⅰ A staging and 147,83.7％ in Ⅰ B staging and 77,75.9％ in Ⅱ A staging and 205,70.7％ in Ⅱ B staging and 288,53.8％ in ⅢA staging and 258,37.3％ in ⅢB staging and 161,28.5％ in ⅢC staging,with a statistically significant difference in survival among sub-stagings (x2=234.900,P ＜ 0.05).There was no statistically significant difference in survival between Ⅰ A and Ⅰ B stagings (x2 =0.179,P＞0.05) and between Ⅱ A and ⅡB stagings (x2 =0.564,P＞0.05).There was statistically significant differences in survival between Ⅲ A and Ⅲ B or ⅢC stagings (x2 =29.790,43.060,P＜0.05) and between Ⅲ B and Ⅲ C stagings (x2 =7.494,P＜0.05).Further analysis showed that changes of TNM staging system between 7th edition and 8th edition were in T3N3b,T4aN2,T4aN3a,T4bN0 and T4bN2 stagings,5-year survival rate in above stagings was respectively 16.7％,35.8％,30.2％,47.1％ and 26.8％,with statistically significant differences in survival between T3N3b and T4aN2,T4aN3a,T4bN0 and T4bN2 stagings (x2 =19.590,8.039,12.070,3.853,P＜0.05),between T4aN2 and T4aN3a,T4bN2 stagings (x2 =6.529,3.859,P ＜ 0.05),between T4aN3a and T4bN0 stagings (x2 =10.400,P＜0.05) and between T4bN0 and T4bN2 stagings (x2=4.636,P＜0.05).There was no statistically significant difference in survival between T4aN2 and T4bN0 stagings (x2 =3.607,P＞0.05) and between T4aN3a and T4bN2 stagings (x2 =0.029,P＞0.05).Conclusions Compared with AJCC TNM staging system 7th edition,N3a and N3b stagings are classified as independent staging in AJCC TNM staging system 8th edition,and 8th edition is more accurate in prognostic evaluation of GC patients in stage Ⅲ.

OBJECTIVE The expression of cancerous inhibitor of protein phosphatase 2A(CIP2A)in hypopharyngeal carcinoma FaDu cells(FaDu cells)was reduced by shRNA to understand its role in the occurrence and development of hypopharyngeal carcinoma.METHODS Specific shRNA sequence was designed,lentivirus was packaged and transfected into hypopharyngeal carcinoma FaDu cells,and CIP2A expression was specifically knocked down.The expression of CIP2A was detected by RT-PCR and Western blot.RESULTS 1.After shRNA knocked down CIP2A in FaDu cells,the CIP2A mRNA expression in the experimental group(CIP2A knocked down group)was significantly lower than that in the blank group,and the CIP2A protein expression in the experimental group was also significantly lower than that in the blank group.2.Cell cloning and CCK8 experiments showed that the cell proliferation ability of the experimental group was significantly decreased compared with that of the blank group(t=50.86,P<0.01;t=12.406,P<0.001);The results of cell scratch test showed that the transverse migration ability of the experimental group was significantly decreased compared with the blank group,and the longitudinal migration ability of the experimental group was significantly decreased compared with the blank group by Transwell test(t=40.038,P<0.01;t=12.247,P<0.001).CONCLUSION After knockdown CIP2A expression in hypopharyngeal carcinoma FaDu cells,the proliferation and migration ability of hypopharyngeal cancer cells decreased,suggesting that CIP2A is involved in regulating the biological behavior of hypopharyngeal cancer cells and can be used as a potential anticancer target.

Objective: To construct the mutants of ARID1A gene, which is an important component in human chromosomal remodeling complex Switch/Sucrose Non Fermentable (SWI/SNF), and identify their overexpression in liver cancer HepG2 cells. Methods: Overlap PCR was used to construct domain truncated mutantss pcDNA6-ARID1A/ΔARID and pcDNA6-ARID1A/ΔD UF3518 based on wild type plasmids pcDNA6-ARID1A. Lipofectionmethod was used to transfect the wild type and mutants into HepG2. Real-time PCR and western blotting were used to confirm the overexpression of ARID1A and the mutants. Results: SDS-PAGE and sequencingresult confirmed the successful construction of pcDNA6-ARID1A/ΔARID and pcDNA6-ARID1A/ΔDUF3518. Real-time PCR and western blottingresult confirmed the overexpression of both mRNA and protein of wild type ARID1A and ARID1A/ΔARID. The mRNA levels indicated that ARID1A/Δ DUF3518 were overexpressed, but the protein levels were quite low. Conclusions Functional domain truncated mutants of ARID1A were successfully constructed. Overexpression of wild type ARID1A and ARID1A/ΔARID in liver cancer HepG2 cells was successful. Loss of ARID1A/ΔDUF3518 protein suggest that DUF3518 may contribute to the protein structure stability.

OBJECTIVETo establish a hemophagocytic lymphohistiocytosis (HLH)-like mouse model induced by CpG oligodeoxynucleotide (CpG-ODN1826) and interferon (IFN)-γ for further study on therapy.

METHODSWild type adult C57BL/6 mice were administered with PBS or CpG-ODN1826 (50 μg) by intraperitoneal injection every two day and IFN-γ subcutaneous injection every day. Parameters of HLH were evaluated on day 10.

RESULTSAs compared to control, HLH-like symptoms in CpG group were characterized with pancytopenia accompanied by increased ratios of monocytes, alanine aminotransferase [(198.7±54.2)IU/L], triglyceride level [(12.1±0.6)g/L], and serum ferritin [(708.4±11.8)pmol/L]; decreased albumin [(217.7±4.3)g/L], fibrinogen [(17.1±1.9)g/L] (all P<0.05). Hepatosplenomegaly was obvious in CpG group. The liver in CpG group had multifocal hepatocytes necrosis and perivascular inflammations. Spleen had expanding red pulp and hyperplastic nucleated cells. Furthermore, macrophages in the liver and spleen were largely activated. Hemophagocytosis were observed in liver, spleen and bone marrow smear. The CpG group was alive during experiment, other than significant decreased activity after the first injection of CpG-ODN.

CONCLUSIONThese data demonstrate that repeated administration of CpG-ODN1826 and IFN-γ could induce HLH-like symptoms without fatal condition in wild type C57B/L mice. This protocol could establish a mild HLH-like mouse model, which could be useful for further study on HLH.

Animals ; Disease Models, Animal ; Injections, Intraperitoneal ; Interferon-gamma ; Lymphohistiocytosis, Hemophagocytic ; chemically induced ; Mice ; Mice, Inbred C57BL ; Oligodeoxyribonucleotides ; toxicity ; Spleen

Activation of the heart normally begins in the sinoatrial node (SAN). Electrical impulses spontaneously released by SAN pacemaker cells (SANPCs) trigger the contraction of the heart. However, the cellular nature of SANPCs remains controversial. Here, we report that SANPCs exhibit glutamatergic neuron-like properties. By comparing the single-cell transcriptome of SANPCs with that of cells from primary visual cortex in mouse, we found that SANPCs co-clustered with cortical neurons. Tissue and cellular imaging confirmed that SANPCs contained key elements of glutamatergic neurotransmitter system, expressing genes encoding glutamate synthesis pathway (Gls), ionotropic and metabotropic glutamate receptors (Grina, Gria3, Grm1 and Grm5), and glutamate transporters (Slc17a7). SANPCs highly expressed cell markers of glutamatergic neurons (Snap25 and Slc17a7), whereas Gad1, a marker of GABAergic neurons, was negative. Functional studies revealed that inhibition of glutamate receptors or transporters reduced spontaneous pacing frequency of isolated SAN tissues and spontaneous Ca