DOTA and its derivatives are most widely uscd novel bifunctional chelators.They have not only mature synthesis route,but also good coordination and chelating ability.Therefore,DOTA metal complexes of DOTA-peptide conjugates are increasingly used as MRI contrast agents,radionuclide targeted imaging agents and therapeutic radiopharmaceuticals in the biomedical field.This review covers the bifunctional derivatives of DOTA,the synthesis of DOTA-peptide conjugates,and the applications of DOTA-peptide conjugate metal complexes.

Objective This study aimed to assess the effects of active and passive smoking on chronic kidney disease (CKD) in patients with type 2 diabetes mellitus (T2DM).Methods Seven hundred and five patients with T2DM were recruited in the study and were divided into three groups based on smoking status as active smokers,passive smokers and non-smokers.Twenty-four hour urinary albumin excretion (24hUAE) was measured,and estimate glomerular filtration rate (eGFR) was calculated with age and blood creatinine levels.Results (1) The proportion of CKD in T2DM in the present study was 31.63％ (223/705) with 28.6％ (22/77),30.0％ (15/50) and 29.6％ (73/247) for non-smokers,passive smokers and active smokers in men,and 29.9％ (40/134),35.9％ (66/184) and 7/13 for non-smokers,passive smokers and active smokers in women,respectively.In comparison with non-smokers,a higher risk of CKD was found in both passive and active smokers (OR =1.07 and OR =1.05 in men ; OR =1.31 and OR =2.74 in women,respectively).(2) Compared with non-smokers,passive smokers had a significant higher risk for albuminuria in women (OR =2.02,P =0.016).(3) After adjusting for gender,age,duration of T2DM,BMI,systolic blood pressure,glycosylated hemoglobin A1C and lipids,there was a significant decrease in eGFR between active and never smokers (P =0.018)or passive smokers (P =0.000) in women.No differences could be found in eGFR between each smoking statues in men.Conclusions Smoking exposure alone confers a high risk for CKD in patients with T2DM.Our results highlight an importance in implementation of a smoke-free environment for patients with T2DM.

Objective To analyze clinical and radiological characteristics in 5 cases of neuromyelitisoptica (NMO) with tumefactive-like demyelinating lesions (TDLs).Methods Five NMO patients with TDLs hospitalized during November 2007 and March 2012 were retrospectively analyzed for clinical and magnetic resonance imaging (MRI) features,as well as therapeutic efficiency and prognoses.Results The male-to-female ratio is 1∶4 and the range of onset ages is 15-44 years old.The median time when TDLs was developed was 36 months after the onset of NMO.The anti-aquaporin 4 was seropositive in all NMO patients with TDLs.Four patients had clinical manifestations of encephalopathy symptoms including coma (n =2),seizures (n =1),narcolepsy (n =1),homonymous hemianopia (n =1).All TDLs grew unilaterally.Two TDLs were located at parietal-occipital,1 at parietal,I at the cerebellum and 1 at the temporal.On MRI,there was no enhanced signal in 4 TDLs,and there was open-ring-like enhanced signals in 1 case.Three TDLs revealed mixed signals intensities on diffusion-weighted images and an increase in the apparent diffusion coeficient values.On the subsequent MRIs,the sizes of 5 TDLs were markedly reduced in 3 cases,disappeared in 1 and another 1 case remained the same.Meanwhile,3 lesions subsequently developed cavity forming.Five cases improved after treatment of high-dose corticosteroid and intravenous immune globulin.Conclusions TDLs is not uncommon in NMO.Encephalopathysymptoms are more frequently affected in NMO with TDLs.TDLs often accompany with extensive vasogenic edema,but without enhancement in acute stage.NMO-IgG antibody testing and brain MRI are important in the diagnosis of TDLs.The therapy of corticosteroid and intravenous immune globulin is recommended.

BACKGROUND: The marginal division, a new sub-region in rat brain striatum discovered in recent decades, has been found to closely relate to learning and memory function of the brain. The immediate-early genes such as c-fos and c-jun participate in the signal transduction of learning and memory in the marginal division. But what other intermediate events are initiated in the marginal division in the process of learning and memory?Cyclic adenosine monophosphate (cAMP) response element-binding protein (CREBP) is an molecule essential for the formation of long-term memory,and investigation of the expression and distribution of phosphorylated CREBP in the striatum may help understand the signal transduction mechanism in the striatum during learning and memory at the molecular level.OBJECTIVE: To investigate the expression of phosphorylated CREBP in rat brain stratum during learning and memory process.DESIGN: Completely randomized controlled study.SETTING: Institute of Neurosciences, Zhujiang Hospital of the First Military Medical University of Chinese PLA.MATERIALS: This experiment was conducted in the Institute of Neurosciences, Zhujiang Hospital of the First Military Medical University of Chinese PLA between April and August 2003. Totally 48 normal male adult SD rats were provided from the Experimental Animal Center of First Military Medical University, and after two Y-maze tests, 40 rats were selected for this study (MG-2 type, Sanshengxing electricity company).METHODS: The 40 SD rats were randomized into 4 equal groups. The rats in the first group were subjected to training to acquire dark avoidance reflex in a Y maze, those in the second group underwent sham training with only light stimulation in the Y maze without electricity on the floor.The rats in the third group were trained in the Y maze with electricity on the floor but not light stimulations, with the rest 10 rats serving as the control group subjected to sham training in the Y maze without either electric or light stimulations. After the training in the Y maze, the rats were sacrificed immunohistochemical detection of phosphorylated CREBP expression in the brain striatum.MAIN OUTCOME MEASURES: Expression of phosphorylated CREBPin rat brain striatum.RESULTS: All the 40 rats enrolled in this study were examined for phosphorylated CREBP expression. Positive expression of phosphorylated CREBP was observed in the medial marginal division of the brain striatum after the rats were trained in the Y maze with electric stimulation, but no obvious expression was seen in rats in the sham training or control groups.Massive expression of phosphorylated CREBP could be observed, typically,in the hippocampus, front prefrontal lobe cortex and cingulate gyrus of the rat brain.CONCLUSION: The transcriptional factor phosphorylated CREBP in the marginal division of the striatum participates in the signal transduction for learning and memory in rats receiving Y maze training to acquire dark avoidance reflex.

Breast Neoplasms ; chemistry ; genetics ; Chromogenic Compounds ; Female ; Genes, erbB-2 ; Humans ; In Situ Hybridization ; methods ; Receptor, ErbB-2 ; analysis

AIM: To analyze and compare the changes of pressure phase plane(PPP) derived τ and K on isolated rat heart during ischemia/reperfusion, and to explore the value of PPP derived τ and K for evaluation of left ventricular diastolic dysfunction. METHODS: LVEDP, -d(p/dt)_(max), τ and K were measured and calculated during ischemia/reperfusion in Sprague-Dawley rat hearts. Meanwhile, the level of lactate dehydrogenase (LDH) in the coronary effluent was measured, and the ultrastructure changes in myocardium were observed under electron microscope. RESULTS: Compared with control group, τ increased and K reduced significantly in each ischemic group in a time dependent manner (P<0.05). With prolonged ischemia, τ was even higher and K was even lower (P<0.05). Compared with control group, except ischemia 15 min, LDH in other groups increased significantly at 10 min and 20 min after reperfusion (P<0.05). Compared with ischemia 30 min, LDH of ischemia 45 min and ischemia 60 min were even higher at 10 min and 20 min after reperfusion (P<0.05). With prolonged ischemia, the abnormal changes of the myocardial ultrastructure were observed. CONCLUSION: PPP derived τ and K may be promising indexes for quantitative assessment of left ventricular diastolic function on isolated) rat heart during ischemia/reperfusion, and indication of the severity of ischemia/reperfusion injury.

Objective To examin and analyze the structure, ultrastructure and the circulation of the spleen ellipsoid in the soft-shelled turtle, Pelodiseus sinensis. Methods Twelve turtles were used and observed by light- and electron-microscopy and injection of ink suspension in this study. Results The spleen white pulp was consisted of the periarteriolar lymphatic sheath (PALS) and periellipsoidial lymphatic sheath (PELS). There was no lymphoid nodule in the spleen. Red pulp included splenic cords and splenic sinusoids. The marginal zone was not found in the turtle spleen. When the central arteriole left out of the PALS, it divided into several ellipsoid capillaries which were surround by the PELS. The end of the ellipsoid capillary opened directly to the splenic cord and the blood cells then entered into the splenic sinusoid through the gap between the endothelial cells. The ellipsoid capillary was consisted of simple cuboidal epithelium with an uncompleted basement membrane. The ellipsoid wall was consisted of supporting cells,ellipsoid-associated cells and reticular fibres. Lymphocytes and red cells were always found on the ellipsoid wall. After 40min of the injection of ink suspesion, much carbon particles of ink were restricted on the wall. Conclusion The ellipsoid capillary in the soft-shelled turtle, just like the high endothelial venule, was the important passage of the lymphocytes and blood cells going out and into the lymph tissue. The splenic circulation in the turtle belongs to the opening model.

Objective To analyze the clinical,radiological and pathdogical characteristics of idiopathic lymphoid interstitial pneumonia (idiopathic LIP) and to discuss its diagnosis,treatment and prognosis.Methods Respiratory physicians,pathologists and radiologists together retrospectively analyzed the clinical,chest roentgenogram,computerized tomography,pathologicM,diagnostic and therapeutic data of 3 patients with idiopathic LIP confirmed by lung biopsy.and reviewed the relevant literatures.Results The major symptoms of the 3 cases of idiopathic LIP were prgressive dyspnea and dry cough.Higher levels of γ-globulins in serum were found in all the cases.The characteristic radiographic manifestations were bilateral diffuse nodules and cysts.The pathologic feature was diffuse interstitial inflammation with polyclonal lymphocytes infiltration,especially with plasma lymphocytes.Corticosteroids and cytotoxic agents were used and good response to therapy was observed in the cases.Conclusions Idiopathic LIP has some characteristics on the clinical,radiological and pathological features,but the best diagnostic method depends on a clinical-radiological-pathological approach.The disease usually shows good response to combinative therapy of corticosteroids and cytotoxic agents.

Objective To establish a closed-chest pulmonary embolism-reperfusion animal model by Swan-Ganz catheter and to explore the mechanisms of pulmonary embolism(PE)-reperfusion injury(RI). Methods Experiments were made on 14 mongrel dogs,ranging in weight from 15 to 18 kg,anesthetized with 3% pentobarbital sodium.The dogs were intubated with I.D.7 endotracheal tubes.Under sterile conditions,a 7 F Swan-Ganz catheter via the external jugular vein was positioned in the unilateral pulmonary diaphragmatic lobe(DL)artery.Occlusion/reperfusion of the DL artery was controlled with 1.2 ml diluted contrast agent filled into/drawn from the balloon.After the 24 h PE,the balloon was deflated to result in 4 h reperfusion of the DL.Measurements of blood gases and tumor necrosis factor-?(TNF-?)were made at normal condition,at 24 h PE and at 4 h reperfusion.Thin-section CT scans were performed at normal condition,24 h PE,30 min,1,2,3 and 4 h reperfusion,respectively.At the end of each experiment, tissue specimens of bilateral diaphragmatic lobes were obtained for both wet/dry(W/D)weight ratio and for pathological study.Results Reperfusion pulmonary edema(RPE)was an acute,mixed,noncardiogenic edema that was observed in all 14 dogs who had been successfully established as PE/RI animal models.RPE demonstrated heterogeneous ground-glass opacifications that predominated in the areas distal to the recanalized vessels.It manifested pathologically as an edematous lung infiltrated by inflammatory cells.The mean ofPaO_2 and TNF-? of 4 h reperfusion was(81?4)mm Hg(l mm Hg=0.133 kPa)and(16.0? 2.5)pg/ml,which were significantly different(P

Objective To observe the effect of different intra-abdominal pressure and different time points on hemodynamics,ent-tidal CO_2(P_(ET)CO_2) and airway pressure(Paw) during the procedure of gynecological laparoscopic operations.Methods 60 cases undergoing gynecological laparoscopic operations were randomly divided into two groups:the intra-abdominal pressure was 1.3kPa in groupⅠ(30 cases) and 1.9kPa in groupⅡ(30 cases).ASAⅠgrade.In both groups,systolic blood pressure(SBP),diastolic blood pressure(DBP),mean arterial pressure(MAP), heart rates(HR).S-T.Paw and P_(ET)CO_2 were monitored and recorded before anesthesia(T_0),shortly after intubation (T_1),pre-pneumoperitoneum (T_2),5min after pneumoperitoneum (supine position) (T_3) and 5min (T_4),10min (T_5),20min(T_6),30min (T_7) after trendelenbury position (head down 200) and 5rain after deflation (T_8).Results In both groups SBP,DBP,MAP at time point T_3,T_4,T_5 were increased significantly compared with those of T_0 (P0.05),but there was significant difference in Paw and P_(ET)CO_2 in different time points within the same group and between the same time point in different groups after pneumoperitoneum(P