Objective To investigate the role of neuro-specific DNA repair gene Nbn in mouse hippocampus development by observing the morphological differences in Nbn-CNS-Del and Nbn-CNS-Ctr mice.Methods Serial sections and stereology were used to quantitatively analyze the development of mouse hippocampus on postnatal day 7,14 and 21.Results Compared with that of the control group,the hippocampus development of Nbn-CNS-Del mice lagged behind.In Nbn-CNS-Del mice,on day 21,the profile area of pyramidal layer of hippocampus and granular layer of dentate gyrus decreased(P

Objective To evaluate the imaging characteristics of the bone infarct . Methods 13 cases of the bone infarct proved by clinical manifestation and surgical pathology were collected,there were 5 males and 8 females. All patients had X-ray films, 4 were imagedwith CT scanning , 7 were imaged with MRI , and 2 underwent all three techniques . The bone infarct were classified into the early,themiddle and later stages.X-ray , CT and MRI findings of bone infarct ,were analysed characteristics . Results Partial osteoporosin and punctate calcifications could be seen on X-ray and CT , in the early and middle stages , which presented as iso-/low-signal on T_1WIand iso-/high-signal on T_2WI in the center of the bone infarct with a tortuous low-signal on T_1WI and high-signal on T_2WI zonearound.In the later stages,the bone infarct was characterize by irregular sclerosis and tortuous calcification on X-ray and CT,and by low-signal on both T_1WI and T_2WI . Conclusion MRI is the most effective way to find the bone infarct in the early stages , X-ray is helpful in diagnosing the bone infarct in the middle and later stages , CT is more sensitive than X-ray . X-ray ,CT and MRI should be combined in diagnosing the bone infarct .

Recently,a large family of G-protein coupled receptors (GPCRs) has been identified as mas-related genes (Mrgs),Which are specific expressed in small diameter sensory neurons in the trigeminal and dorsal root ganglia,suggesting a role in pain transmission.Mrgs receptors have been shown to modulate some physiological and pathological activities,such as pain and immunity.It is important to discover ligands of Mrgs for understanding and elucidating their potential physiological and pathophysiological roles.The studies on pharmacological spectrum of NPS make it an interesting target for pharmaceutical development.

Objective To investigate the feasibility of differentiation between prostate cancer and prostatitis by using metabolic ratios provided by 3D 1H Magnetic Resonance Spectroscopic Imaging (MRSI). Methods Metabolic changes were evaluated in 42 voxels with prostate cancer and 30 voxels with prostatitis in the peripheral zone using MRSI. The results were based on the pathologic findings by biopsy. The (choline + creatine)/Citrate (CC/C) ratio and the changes of choline and citrate levels were evaluated in each voxel with cancer or prostatitis, t test was used to determine the power of the CC/C ratio in differentiation between prostate cancer and prostatitis. Results The CC/C ratio for cancer voxels (1.28±0.41) was significantly different from the ratio in the voxles with prostatitis (1.03±0.40), t=6.45, P<0.05, due to greatly increased choline level in the cancer voxels. When CC/C ratio of 0.8 was taken as the criteria for the diagnois of prostate cancer, the sensitivity, specificity and accuracy were 65.5%, 71.4% and 66.7%, respectively. Positive predictive value(PPV)and negative predictive value(NPV) were 90.5% and 33.3%, respectively. The CC/C ratio was higher than 0.86 in 66.7% voxels with prostatitis (20 voxels of total 30 voxels), which mostly depended on the level of choline. When citrate level was used as an auxiliary index to evaluate prostatitis (Cit/norm, Cit≥0.75), the misdiagnosis rate of prostate cancer was reduced to 26.6%(8 voxels of total 30 voxels). Conclusions The metabolic ratio of CC/C can be used to differentiate prostate cancer from prostatitis. The misdiagnosis rate is reduced when citrate is not or slightly decreased relative to normal citrate level (Cit/norm, Cit≥0.75).

A new medical research technology that combines surface enhanced Raman spectroscopy (SERS)with labeling immune technique is emerging with the development of SERS.This paper is intended to describe the principles, research progress and existing problems relating to SERS labeling immunoassay technology.We also summarize the research techniques for improving the sensitivity of SERS labeling immunoassay and the methods to eliminate nonspecific adsorption in SERS labeling immunoassay.Furthermore,the future development of SERS labeling immunoassay technology is discussed.

Objective To study the effects of hSSTR2 gene in vitro transfection on differential proteins expression in pancreatic cancer cell line Panc-1 and search new sensitive therapeutic targets of pancreatic cancer. Methods The full length hSSTR2 cDNA was introduced into pancreatic cancer cell line Panc-1 by adenovirus vector ( Ad. CMV. hSSTR2. GFP) mediated transfection. The differential expressed proteins between the hSSTR2 transfection group, vector control and mock control were isolated and screened by 2D-DIGE analysis. Protein identification was performed by peptide mass finger printing with matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF/TOF). Results The hSSTR2 gene was transfected into Panc-1 pancreatic cancer cells in vitro successfully, and fluorescence difference protein expression patterns were established between hSSTR2 negative and positive expression of Panc-1 cell. Analysis by DeCyder v6.5 software showed a total of 18 protein spots ( > 1.3-fold) and these protein spots were identified by mass spectrometry as 13 proteins. Proteins with lower abundance levels included GMP synthase, stress induced phosphoprotein 1, glutamate dehydrogenase 1, Septin-11, vimentin, Isocitrate dehydrogenase [NAD] subunit alpha, Import inner membrane translocase subunit TIM50. Proteins with high abundance levels included Elongation factor 1-alpha-1, Isoform M2 of Pyruvate kinase isozymes M1/M2, Enoyl-CoA hydratase,tripartite motif-containing 28 protein, Mitofilin, HSP105. Conclusions The proteins expression changed after hSSTR2 gene in vitro transfection in Panc-1 cells, and the function of difference proteins involved the process of metabolism of sugar, fat and nucleic acid, and the regulation of cell growth. The present study paved the way for searching new sensitive therapeutic targets of pancreatic cancer.

Objective To explore the value of imaging diagnosis of nerve-root-type cervical spondylosis(NRTCS)and to study the relative factors to the nerve root disturbance.Methods 188 cases of NRTCS clinically proved and with complete imaging data were retrospectively analyzed.The imaging characteristics of CR,CT and MRI of NRTCS were compared and the relative factors to the nerve root disturbance were analyzed in combination with the clinical characteristics.Results ①CR films in six-position could show the whole expression of the cervical spine.The anterior-posterior and functional position CR showed the physiological curvature change in 122(64.9%),narrowing of intervertebral space in 96(51.2%)and vertebral-body unstability or slide in 49(26.1%).The oblique CR showed the intervertebral-foramen lessening or narrowing in(26.1%)and Luschka-or intervertebral-joint osteophyte in 82(43.2%);②CT scans showed Luschka-or intervertebral-joint osteophyte in 76(40.4%),disc herniation and calcification of cartilage nodus in 80(42.6%)and hypertrophy or calcification of ligamenlum flavum in 66(39.8%);③MRI showed intervertebral-disk degeneration and protrusion in 105(55.8%),hypertrophy or calcification of ligamentum flavum in 51(27.1%),the nerve root and spinal cord compressed in 69(36.7%)and edema or degeneration of spinal cord in 23(12.2%).Conclusion The nerve root disturbance is closely correlated with the imaging appearances in NRTCS.It is of importance in early diagnosis and treatment for NRTCS to analyse synthetically the imaging data and clinical characteristics.

Objective To analyze X-ray ,CT and MRI findings of Charcot’s joint.Methods 24 cases of Charcot’s joint were collected,there were 11 males and 13 females.24 cases were examined with radiography,9 with CT ,5 with MRI,and 2 were examined with all three techniques.X-ray,CT and MRI imaging findings of Charcot’s joint were analysed.Results There were two types of Charcot’s joint,hypertrophic(12 cases) and atrophic(12 cases).X-ray and CT findings of hypertrophic type were hyperostotic osteosclerosis with osteophytes,periarticular soft tissue swelling and ossification.While the atrophic type appeared as extensive bone resorption and disappearance,periarticular debris and soft tissue swelling,articular dislocation.These imaging findings of Charcot’s joint also could be showed by MRI.The joint capsule thickened periarticular soft tissue markedly enhanced after Gd-DTPA was administrated with definite medial margin.Conclusion Charcot’s joint is of typical imaging appearances.

ve To understand the levels of trace elements in hair of patients with hypertension disease and coronary heart disease. Methods The contents of zinc, copper, manganese and iron in hair were determined among 45 patients with hypertension disease, 36 patients with coronary heart disease and 40 healthy controls by flame-atomic absorption spectrophotometry respectively. Results The contents of zinc and the ratio of the contents of zinc vs the contents of copper in hair of patient with hypertension disease and coronary heart disease showed significantly higher levels compared with those of healthy controls (P

Spontaneous miscarriage is the most common complication of the first trimester,among which 90% are early miscarriage that occurs prior to the 12th week of the gestation.Low progesterone level may be the main cause of the early miscarriage.This article discusses the incidence,pathogenesis,progesterone treatment,and prediction marker of early miscarriage to provide clues for the clinical work.