Objective To observe the developmental changes of projection and termination of proprioceptive afferent fibers in the mouse spinal cord. Methods Parvalbumin (PV) immunohistochemistry was used to label the proprioceptive afferents. Single and dual immunofluorescence histochemistry were used to examine the growth pattern of proprioceptive afferents and their relationships with motoneurons in the spinal ventral horn (VH). The stained sections were observed under a confocal laserscanning microscope. Results PV-like immunoreactive (LI) proprioceptive fibers first appeared in the dorsal column on embryonic (E) day 14, then entered the gray matter on El5 and reached the intermediate gray matter and VH more obviously on E16. The number and intensity of PV-LI proprioceptive afferent fibers and punctata increased in the VH with age and reached a maximum during earlier postnatal (P) period (P0-P7). After P14, the number and intensity of proprioceptive afferents gradually decreased. The proprioceptive terminals seemed to form close relationship with motoneurons from E17. Conclusion The present study indicates that the somatotopic organization of proprioceptive afferents in the spinal cord is established during the late embryonic and early postnatal stages. These results provide evidence for understanding the development of the reflex movements.

The present study was designed to examine the developmental changes in projection and termination of nociceptive and proprioceptive afferent fibers in the spinal cord by labeling those two fibers with calcitonion gene-related peptide (CGRP) and parvalbumin (PV)separately in mouse embryos and neonatal pups aged embryonic day 15 to posanatal day 3 (E15 -P3). CGRP-like immunoreactive (LI)nociceptive fibers first appeared in the superficial dorsal horn (DH) at E16. The afferent projections extended laterally to the DH and entered into the deep portions of the DH at E17 and E18. After birth, the projection pattern of CGRP-LI fibers remained unchanged but the intensity of afferent terminals increased in the superficial laminae and their branching patterns became more complicated. In addition,CGRP-LI collaterals that projected into the contralateral DH were also examined after E16. Around birth, the contralateral projections were also found originated from the lateral part of the DH. PV-LI proprioceptive afferents were first observed entering the gray matter at E15 and reached the intermediate gray matter (IG) and the ventral horn (VH) more obviously on E16. The number and intensity of PV-LI fibers increased in the the VH with age and reached a maximum during earlier postnatal period ( P0-P3 ). The proprioceptive terminals seemed to form close relationship with motoneurons in the VH from E17. Our results indicate that the somatotopic organization of nociceptive and proprioceptive afferents in the spinal cord both are established during the late embryonic and early postnatal stages. These results help to understand the development of the sensory transmission in more details.

Objective To evaluate the effects and toxic side-effects of radiotherapy combined with xeloda or carboplatin respectively for locally advanced esophagus carcinoma.Methods 74 cases with locally advanced esophagus carcinoma were randomly allocated into two groups.One group received radiotherapy combined with Xeloda,500mg at a time,twice a day,taken orally from the beginning of radiotherapy till end of treatment.The second group received radiotherapy combined with Carboplatin by intravenous drip at 100mg a day,for 5 days,from the first week of radiotherapy.Results The overall response rate in the radiotherapy combined with Xeloda group was 91.4％ and 89.7％ in the radiotherapy combined with Carboplatin group.The difference between the two groups was not statistically significant(P ＞0.05 ).Kaplan-Meier survival analysis showed no statistically significant differences in survival between the two groups.The toxic side-effects of gastrointestinal tract,reaction myelosuppression and late radiation reaction were notably alleviated in the Xeloda group compared with the Carboplatin group.Conclusion Compared with Carboplatin,Xeloda combined with radiotherapy had less toxic side-effects for treatment of advanced esophagus carcinoma,with an equal local control rate,which worthy of clinical application.

Objective To investigate the clinical value of contrast-enhanced ultrasonography(CEUS) in evaluating treatment response of hepatocellular carcinoma after interventional therapy. Methods One hundred and three patients with 136 lesions of hepatocellular carcinoma confirmed by pathology were examined by common color ultrasound (US), contrast-enhanced CT, CEUS and DSA pre- and post-interventional treatment respectively. Results The sensitivity,specificity and accuracy of CEUS for focus judgment after interventional therapy were 95.8%, 95.6% and 98. 5% respectively. The sensitivity, specificity and accuracy of US in detecting tumor deactivation and residue were 92.3% ,77.4% and 83.1% respectively. CEUS were highly consistent with the results of enhanced CT/DSA (Kappa = 0.93) and significantly higher than those of US (Kappa = 0.66). Conclusions CEUS is useful to monitor the efficacy and guide treatment after interventional therapy.

Objective To investigate the feasibility of CT pulmonary angiography (CTPA) with 80 kVp and contrast agent of iodixanol (270 mg I/ml) by filtered back projection(FBP) reconstruction.Methods In total,52 patients who underwent CTPA were randomly divided into two equally-sized groups,control group and experimental group.The volume computed tomography dose index (CTDIvol) and dose-length product (DLP)were recorded,and the weighted computed tomography dose index (CTDIw) and effective dose (E) were calculated.The image quality was visually evaluated and measured,and statistical analyses were performed on the image quality and the radiation dose.Results The sex,age,height,weight and body mass index (BMI) had no statistical difference between two groups (P ＞ 0.05).The average iodine dosage decreased by 22.9％ in the experimental group compared with the control group.Compared with the control group,the CTDIvol,DLP,CTDIw and E decreased by 73.5％,75.1％,73.5％ and 75.8％,respectively.The differences were statistically significant (t =＜0.001,30.5,＜ 0.001,-28.7,P ＜ 0.05).The image quality of the two groups met the requirement of diagnosis and there were no significant statistic differences between visually evaluating and objectively measuring the image quality (P ＞ 0.05).Conclusions Using 80 kVp and iodixanol for CTPA,FBP reconstruction image quality can meet diagnostic requirements.At the same time the radiation dose,the contrast agent dose and the X-ray tube wastage are reduced respectively.

Objective:Preparated from seeds of Brassica alba, Sinapine was determinated by RP-HPLC. Methods: Seeds of Brassica alba were shattered, defatted by ether, extracted by alcohol, and crystallized by potassium thiocyanate, then ethanol and water were used to recrystallize for several times. The determination was performed by reversed-phase high performance liquid chromatography(RP-HPLC), using ZORBAX SB-Aq column 4.6 mm?250 mm, 5 ?m. The mobile phase consisted of acetonitrile-0.08 mol/L KH2P04 (20:80) at a flow rate of 1.0 ml/min, and the detection wavelength was 326 nm. Results: Pale yellow needle-like sinapine crystal was obtained, and the yield rate was 0.82%. The purity of sinapine thiocyanate crystal was over 95%. Conclusion: Preparation sinapine by this solvent extraction method was simple, high-purity, high yield, and could be used for industrial production.

Objective To evaluate the clinical effectiveness and the major toxic effect of radiotherapy combined with docetaxol and cisplatin respectively in the treatment of locally advanced non-small cell lung cancer (NSCLC).Methods 98 patients with locally advanced NSCLC were randomly divided into two groups.All of the patients were treated with 3D-CRT.One group was treated combined with docetaxel,20mg/m2,every week,totally 6 times.The other group was treated combined with cisplatin,30mg/m2,every week,totally 6 times.The total dose was 60 ～66Gy,2Gy/F,5 times each week for 5 ～7 weeks.The clinical effect and the major toxic effect between two groups were compared.Results The median survival time in group that treated with docetaxol was 17.2 months,median progression-free survival time was 13.5 months,and the 1,2 and 3-year survival rates of the patients were 78.6％,35.7％ and 19.5％ respectively.The median survival time in group that treated with cisplatin was 16 months,median progression-free survival time was 16.5 months,and the 1,2 and 3-year survival rates of the patients were 74％,34％ and 20％ respectively.The differences between two group were not stetisticelly significant( P ＞0.05 ).However,the side effect of the stomach and intestine and late radiation complication in group treated with docetaxol were slighter than those in group treated with cisplatin.Conclusion The clinical effect of radiotherapy combined with docetaxol in the treatment of locally advanced NSCLC was equal to radiotherapy combined with cisplatin.But radiotherapy combined with docetaxol has a slighter and acceptable toxic effect,which was worth the clinical application.

Objective To investigate the characteristics of breast neoplasms on contrast-enhanced ultrasonography(CEUS) and its clinical value.Methods Two hundred and twenty-five patients with breast masses unable to be diagnosed by conventional ultrasonography were examined with CEUS.The characteristics of these masses on CEUS were analyzed and compared with the results of pathology examination.Results The typical features of breast cancers on CEUS were enlarged maximum diameter of the lesions on CEUS compared to pre-contrast ( P ＜0.05),irregular shapes,heterogeneous distribution of contrast enhancement with perfusion defect or local retention of contrast signals,tortuous,massive or penetrating vessels rapidly entering and exporting from the lesions.The sensitivity and specificity of perfusion defect for breast cancer on CEUS were 89.0％ and 91.8％,respectively; the sensitivity and specificity of local retention of contrast signals for breast cancer on CEUS were 93.4％ and 92.5％,respectively.Conclusions It is valuable for CEUS in the diagnosis and differential diagnosis of breast neoplasms clinically.

Objective To compare of clinical effect between radiotherapy and chemoradiotherapy and investigate the prognostic factors in elderly patients with esophageal squamous cell cancer.Methods 229 elderly patients with esophageal squamous cell cancer who received radiotherapy and chemoradiotherapy from January 2009 to December 2013 were retrospective analyzed.The Local control rate and survival rate were calculated by Kaplan-Meier method,and the short effect and long term effect between radiotherapy and chemoradiotherapy were compared.Cox regression model was used for invariant analysis and multivariate analysis.Results The follow up time was 15.3months.The short effect of radiotherapy group was not better than that of chemoradiotherapy group,with CR 35.6％ vs 45.8％,RR 61.0％ vs 53.0％,SD 2.7％ vs 0 and PD 0.7％ vs 1.2％ (P=0.211).The 1-,2-,3-year local control rates of radiotherapy group were significantly poorer than that of chemoradiotherapy group,with 82.8 ％,60.5 ％ and 52.7％ vs 89.5％,85.4％ vs 80.9％,respectively (P=0.009).However,there were no significance difference between the 1-,2-,3-year survival rates of radiotherapy group and chemoradiotherapy group,with 66.4％,29.5％,17.1％ vs.65.9％,40.3 ％,30.8 ％,respectively (P =0.071).In invariant analysis,T stage,N stage,clinical stage and radiotherapy dose (＜ 60 Gy,60 ～66 Gy,＞66 Gy) were related with the prognosis of esophageal carcinoma.The COX regression model showed that T stage,N stage and radiotherapy dose were independent prognostic factors that effected survival rate.Conclusion In elderly patients with esophageal squamous cell cancer,chemoradiotherapy can improve the local control rates,but not benefit the survival rate.T stage,N stage and radiotherapy dose were independent prognostic factors that effected survival rate,which could provided evidence for prognosis judgement and clinical practice.

ObjectiveTo investigate the value of 64-slice CT urography (CTU) in diagnosis of urologic diseases.Methods Sixty patients with suspected urinary system diseases underwent 64-slice CT volume scanning and 3D reconstructions.The diagnostic value of 64-slice CTU was evaluated.ResultsThere were 14 patients with urinary system cancers,2 with ureter polyp,9 with tuberculosis of urinary system,13 with urinary system calculus,13 with nonmalignant ureterostenosis combined with hydronephrosis,2 with ureterostenosis and hydronephrosis induced by nearby organic damage,2 with traumatism,1 with renal occlusion,as well as 4 after urinary tract surgeries and 2 without abnormality.Totally 28 cases was confirmed with surgery and pathology,the sensitivity,specificity and accuracy of MSCTU for upper tract tumor was 100％(14/14),85.71％ (12/14) and 92.86％ (26/28),respectively.ConclusionMSCTU is able to directly and clearly show urologic diseases.It can be regarded as the first choice in patients with clinically suspected urinary tract diseases,especially tumors.