Objective To alanyze the imaging features of brain in systemic NHL.Methods CT and MRI of brain in 8 cases of systemicNHL proved pathologically were performed.Imaging findings of brain were analysed and by comparison with that in 73 cases of brainmetastases with marked enhancement after contrast administration.Results 13 lesions in 8 cases were found by CT,the findings on contrast-enhanced CT included:①Ten lesions showed low density with obscure border;②Three nodular lesions showed high density(including 2 homogeneously and 1 ring-like enhanced nodules).All lesions showed neither ventricle enlargement nor occupying effects.Those enhanced showed no edema around the nodules.Of the 4 cases with MRI,low T_1 signal and high T_2 signal with no change after contrast administrationwere seen in 3 cases.One showed ring-like enhancement with no edema around.While 89% of the 73 brain metastatic cases showeddifferent extent of edema.Conclusion The imaging findings in some of the lesions in this study are different from that described before in literatures.In comparison with other metastases,the marked-enhanced nodules with no edema were found to be a specialty of secondary NHL in brain in our cases.

Objective To study the lymphoproliferative responses to HHV-6(Human Herpesvirus-6,HHV-6)among patients with oral squamous cell carcinoma,and to discuss the role of HHV-6 in the pathogenesis of oral squamous cell carcinoma.Methods IgG antibody to HHV-6 in plasma was identified by indirect immunofluorescence(IIF).Immuno-magnetic beads were used to prepare CD4+ T cells and CD8+ T cells.The proliferation of CD4+ T cells,CD8+ T cells and PBMCs stimulated with HHV-6 or anti-CD3 antibodies was measured by 3H-thymidine uptake.The percentage of CD4+ C25+ Treg cells(Regulatory T cell,Treg)within the peripheral blood CD4+ T cell compartment was analyzed by flow cytometry.Results Significantly higher proportion of patients with oral squamous cell carcinoma had IgG antibody to HHV-6(8/8) in plasma as compared with those in control subjects(12/20);The proliferative responses of PBMCs and CD4+ T cells from patients with oral squamous cell carcinoma to HHV-6 were significantly decreased as compared to those from HHV-6-infected and healthy individuals(P

Objective To assess the value of hemofiltration in the prevention of contrast induced nephropathy(CIN) post percutaneous coronary intervention(PCI) in severe chronic kidney disease stages(CKD) patients. Methods We evaluated 30 CKD patients who underwent PCI followed by bedside hemofiltration. We measured serum creatinine levels before PCI, 24 hours, 72 hours, and one week after PCI, and calculated creatinine clearance(CrCl) according to Cockcroft and Gault equation.We observed the incidence of CIN, and the short term clinical efficacy of hemofiltralion. Results The average age of the 30 patients was (72.87 ± 8.71) years old, with 21 (70%) male patients. The stages of CKD among the patients included CKD 3 (3 patients, 10%), CKD 4 (20 patients, 66.7%) and CKD 5 (7 patients, 23.3%). The average duration of hemofiltration was (7.5±4.1) hours. Serum creatinine before PCI, 24 hours, 72 hours and 1 week after PCI was (498.7±143.7)μmol/L, (353.2±128.0)μmol/L, (450.0±132.2)μmol/L, (488.0±145.7)μmol/L respectively,and CrCl was (20.3±10.2) ml/min, (36.5±14.3) ml/min, (28.3±10.4) ml/min, (21.0±10.3) ml/min respectively. There was no CIN. Mean follow-up was (3.1 ± 2.6) months. There was no new cardiovascular events, and no new patients need to rely on long term hemodialysis. Conclusions For patients with severe renal insufficiency, hemofiltration may reduce the incidence of CIN, It is an alternative preventive measures to prevent CIN.

Objective To evaluate the clinical effect of transcatheter closure with Amplatzer duct occluder offers in infants with patent ductus arteriosus(PDA).Methods Thirty-seven PDA infants underwent transcatheter closure of PDA at(8.7 ? 3.3)months and weight of(8.6 ? 3.5)kg.A lateral view aortogram was made to determine the morphology and the narrowest diameter of the ductus and selected the size of the device.Occluder was implanted using the anterograde venous approach.Follow-up evaluations were made with chest X-ray and echocardiogram at 24 hours and 1,6 and 12 months after implantation.Results The narrowest diameter of the ducts measured by angiographically was(3.3 ? 1.5)mm.Ninteen patients(54.29%) achieved immediate complete occlusion.On color Doppler the closure rates at 1 month after implant were 34 cases(97.14%).No residual shunt exsisted in all implanted patients at 6 and 12 months follow-up.Procedure time at(57 ? 43)minutes and fluoroscopy time(23.0?14.9)minutes.Conclusions Percutaneous PDA closure with the Amplatzer duct occluder decice is an safety and effective method for the treatment of PDA in infants,but caution shall be exercised to the anatomic characteristics in the infant age group in solving clinical complications.

Objective To assess the two-dimensional carotid strain as an index of arterial stiffness in patients without carotid atherosclerotic plaques,and its clinic value in cardiovascular risk stratification.Methods All patients were divided into three groups (low risk,intermediate risk,high risk group) by Framingham cardiovascular risk scores,two-dimensional carotid circumferential strain (CS),carotid intimamedia thickness (IMT) were evaluated.CS was adjusted for pulse pressure (CS/PP).Results CS,CS/PP,IMT were significant difference between low risk and intermediate risk groups,low risk and high risk groups (P ＜0.05).IMT and CS were not significant difference between intermediate risk and high risk group (P =0.23,P =0.57).CS/PP was significant difference between three groups (P ＜0.05).Both CS and CS/PP were correlated with IMT (r =-0.30,r =-0.33,P ＜0.05).Conclusions Two dimensional strain could assess the carotid arterial mechanics.IMT and CS could evaluate the structural and functional alternations of carotid stiffness.Combining these two indices allowed more accurate evaluation of the subclinical phase of the atherosclerotic disease.

Twelve compounds were isolated from the herb of Chenopodium ambrosioides, and their structures were identified by spectroscopic methods as kaempferol-7-O-alpha-L-rhamnopyranoside (1), kaempferol-3,7-di-O-alpha-L-rhamnopyranoside (2), patuletin (3), quercetin-7-O-alpha-L-rhamnopyranoside (4), grasshopper ketone (5), 4-hydroxy-4-methyl-2-cyclohexen-1-one (6), syringaresinol (7), benzyl beta-D-glucopyranoside (8), dendranthemoside B (9), N-trans-feruloyl tyramine (10), N-trans-feruloyl 4'-O-methyldopamine (11), and 4-hydroxy-N-[2-(4-hydroxyphenyl) ethyl] benzamide (12). Among them,compounds 3, 6-8,10, and 12 were isolated from the genus Chenopodium for the first time, and compounds 2-12 were isolated from this plant for the first time.
Chenopodium ambrosioides ; chemistry ; Drugs, Chinese Herbal ; chemistry ; isolation & purification

ly reduces the expression of αⅡbβ3 complex on the membrane. This mutation may interfere the formation of αⅡbβ3 complex or impair the proper conformation of αⅡb subunit.

Objective To investigate the potential value of MR dynamic contrast enhanced imaging (DCE)in predicting short-term effects of(chemo-)radiation therapy on cervical cancers in vivo.Methods Thirty-two patients pathologically diagnosed as cervical cancers received MR-DCE scan before therapy.The following scans were taken at the 2nd to 3rd week after the radiation or(and)chemotherapy initiated,to calculate early size change.The fourth scan was performed within one month after the therapy to judge residues.DCE derived parameters include mean time to enhancement(MTE),positive enhancement integral (PEI),time to peak(TTP),maximum slope of increase(MSI)and maximum slope of decrease(MSD).Size and DCE parameters were compared and analyzed by Mann-Whitney test and Spearman teat Results There are 20 cases in non-residue group and 12 cases in residue group.In non-residue group,the maximal lengths in both horizontal and craniocaudal directions[(47.45±13.76)mm and(38.75±10.69)mm]were smaller than that in residue group [(61.08±13.73)mm and(53.67±16.05)mm],with statistical significance(Z=-2.455 and-2.650 respectively,P＜0.05).PEI in low-enhance areas of non-residue group(0.62±0.25)was significantly higher than that in residue group(0.39±0.14)(Z=-2.919,P＜0.05).At early time after radiation started,length changing rate and volume changing rate had medium to strong negative correlations with MSI in hish-enhance areas(r=-0.577 and-0.723 respectively,P＜0.05).Conclusions For cervical cancers,those with larger lengths and lower PEI in low-enhanced areas tend to have tumor residue when radiation therapy completed.Those low MSI in high-enhance areas tend to shrink quickly.It is suggested that volume and parameters of DCE before(chemo-)radiation therapy have the potential in predicting short-term therapeutic effect.

Objective To explore the clinical significance of serum cystatin C (Cys C) combined with brain natriuretic peptide(BNP)in more earlier,more accurate diagnosis of contrast-induced nephropathy(CIN)after coro-nary angiography or percutaneous coronary intervention .Methods 358 patients undergone coronary angiography or percutaneous coronary intervention were enrolled in this study , and the data were collected .The serum creatinine (Scr),Cys C and BNP were tested before operation .The serum Cys C and BNP were tested 8h,16h,24h after opera-tion.The serum Scr was tested 24h,48h,72h after operation.All patients were diagnosed and grouped with CIN by ser-um Scr.The results were compared between the CIN group and control group ,diagnosis efficiency of Cys C ,BNP and combine with them was analyzed .Results CIN occurred in 16 cases of 358 enrolled patients , the incidence was 4.47%.The levels of Scr increased beyond 24h after operation in the CIN group .The levels of serum Cys C and BNP had no significant difference at 8h after operation compared to preoperation (P>0.05),and significantly rosed at 16h and 24h after operation(P<0.01)than before in the two group,[16h Cys C:(1.63 ±0.49)mg/L vs(0.91 ±0.33) mg/L,24h Cys C:(3.45 ±0.83)mg/L vs(0.91 ±0.33)mg/L,16h BNP:(215.96 ±55.72)ng/L vs(102.40 ± 32.23)ng/L,24h BNP:(352.41 ±61.08)ng/L vs(102.40 ±32.23)ng/L,all P<0.01].The levels of serum Cys C and BNP had no significant difference at 8h after operation in CIN(P>0.05),and significantly rosed at 16h and 24h after operation in CIN( P<0.01)than the corresponding levels in the control group [16h Cys C:(1.63 ±0.49)mg/L vs(0.93 ±0.38)mg/L,24h Cys C:(3.45 ±0.83)mg/L vs(0.92 ±0.34)mg/L,16h BNP:(215.96 ±55.72)ng/L vs(149.32 ±43.74)ng/L,24h BNP:(352.41 ±61.08)ng/L vs(164.82 ±49.62)ng/L,all P<0.01].The diagno-sis efficiency of serum Cys C combined with BNP at 16h after operation had high degree of accuracy .Conclusion In this study,the serum Cys C and BNP are better biomarker for early diagnose of CIN ,witch can diagnose CIN earlier than Scr .Combine of the two biomarker can more earlier ,more accurate diagnose CIN .

Objective:To investigate the effect of estrogen on the expression of P2X7 receptor ( P2X7R) in the cerebral cortex and neuroinflammation after subarachnoid hemorrhage ( SAH) in rats.Methods:The rat model of SAH was induced by modified mono-filament puncture method.Sixty male SD rats were divided randomly into three groups:sham group;SAH group and estrogen-treatment group.The local cerebral blood flow was detected with laser doppler blood flow meter.The content of tumor necrosis factor alpha ( TNF-α) and interleukin-6 (IL-6) were measured by ELISA analysis.The expression of P2X7R in the cerebral cortex was tested by immuno-histochemical and Western blot methods.Results:Compared with that in Sham group,cerebral blood flow was significantly decreased after SAH (P<0.05),the content of TNF-αand IL-6 in the cerebral cortex were significantly up-regulated at each time point after SAH (P<0.05),peaked at 24 h,and the expression of P2X7R significantly increased at 6 h,12 h and 24 h after SAH (P<0.05),peaked at 12 h.Compared with that in SAH group,cerebral blood flow was significantly increased in estrogen-treatment group (P<0.05),the levels of TNF-α,IL-6 and P2X7R were down-regulated in estrogen-treatment group ( P<0.05).Conclusion: Estrogen could attenuate neuroinflammation in the cerebral cortex after subarachnoid hemorrhage in rats, which may be associated with the down-regulation in P2X7R proteins.