Electrocardiography ; Humans ; Takotsubo Cardiomyopathy ; Ventricular Dysfunction, Left

Objective To optimize methods of culturing smooth muscle progenitor cells(SPCs) from mononuclear cells(MNCs) of peripheral blood. Methods Human MNCs isolated from buffy coat were seeded on M-199 with bovine pituitary extraction.On the eighth day outgrowth cells were stimulated with platelet-derived growth factor-BB(PDGF-BB).Fifteen days later,immunofluorescence,Western blot or RT-PCR was used to analyzed the expression of smooth muscle cell specific ?-actin(?-SMA),smooth muscle myosin heavy chain(SM MHC),Calponin,CD34,Tie-2 and Flk-1,and fluorescence activated cell sorter was employed to examine ?-SMA positive cells ratio. Results The cells stimulated by PDGF-BB for 15 d were positive for ?-SMA,SM MHC,Calponin,CD34 and Flk-1,but negative for Tie-2.The ?-SMA positive cells ratio was(90.57?5.63)%,significantly different from that of the control(P

AIMTo investigate the mechanism through which insulin affect the learning and memory abilities of the Alzheimer's disease-like rats.

METHODSOkadaic acid (OA) was injected into the CA1 region of the rat hippocampus and the insulin was injected into the lateral cerebral ventricle of the rats. The learning and memory abilities of the rats were assessed through Morriswater maze behavioral test, and the expressions of nicotinic acetylcholine receptors and GFAP were observed by Westem blotting and immunohistochemistry, respectively.

RESULTSCompared with the control rats, the abilities of learning and memory were lowered significantly (P < 0.01) and the expressions of the nicotinic acetylcholine receptors were decreased and the GFAP positive astrocytes were increased greatly in the model rats (P < 0.05). In the rats injected with insulin, it was found that their learning and memory abilities were improved significantly (P < 0.01) and that the expression of the nicotinic acetylcholine receptors were increased and GFAP positive astrocytes were decreased obviously (P < 0.05), as compared with the model rats.

CONCLUSIONInsulin is able to enhance the learning and memory abilities of the Alzheimer's disease-like rats, possibly by improving the function of the acetylcholine system and decreasing the astrocytes proliferation in the brain.

Alzheimer Disease ; physiopathology ; Animals ; Glial Fibrillary Acidic Protein ; metabolism ; Insulin ; pharmacology ; Learning ; drug effects ; Male ; Memory ; drug effects ; Random Allocation ; Rats ; Rats, Wistar ; Receptors, Nicotinic ; metabolism

Objective To analyze the normal anatomy of petrosal vein and the space adjacent relationship between the petrosal vein and the homolateral trigeminal nerve by balanced turbo field echo (B-TFE) Cine-MR imaging and enhanced T1 high-resolution isotropic volume excitation (e-THRIVE)imaging.Methods Forty-one patients with facial spasm and epileptiform neuralgia were selected and taken a scan with ACHIEVA NOVA DUAL A-serial 1.5T MR machine using the BTFE and e-THRIVE series.The space adjacent relationship between the petrosal vein and the trigeminal nerve in cerebellopontine angle were observed.Results The 82 sides of petrosal veins and homolateral trigeminal nerves (41 cases) were displayed well.Petrosal veins were located in cavitas subarachnoidealis,partly in free state; the number of trunk ofpetrosal vein could be 1,2,3,respectively,responding to 70 (86%),10 (12%),2 (2%).The petrosal veins located in the dorsal-lateral of trigeminal nerve were found in 74 sides (37 cases,91%,by BTFE,e-THRIVE series),the petrosal veins located in the ventri-lateral of trigeminal nerve in 6 sides (3 cases,7%,by e-THRIVE series),and the petrosal veins located in the right upon trigeminal nerve in 2 sides (1 cases,2%,by BTFE series).Conclusion B-TFE MR imaging and e-THR/VE imaging,showing the petrosal veins and trigeminal nerves clearly and evaluating their relationship accurately,can provide information of topographic anatomy before microsurgical vascular decompression.

Objective To survey the apparent diffusion coefficient (ADC) value and fractional anisotropy (FA) value ofpontine cistern section of the trigeminal nerve, and understand the characteristics of various parameters of trigeminal nerve pontine cistern section. Methods The distances from pontine cistern section of the trifacial nerve to 0, 3, 6 and 9 mm of brain stem in 50 healthy volunteers were recorded, and fusion images of magnetic resonance diffusion tensor imaging (DTI) with B-TFE or THRIVE were achieved to improve the spatial resolution of the pontine cistern section of the trifacial nerve; their ADC value and FA value were recorded, separately. Tracing image formation was noted in the pontine cistern section of the trigeminal or trifacial nerve. Results The ADC and FA results of the left side and right flank of pontine cistern section of the trifacial nerve in these healthy volunteers were not statistically different (P＜0.05). The closer to the brain stem, the more asymmetrical tendency of distance from pontine cistern section of the trifacial nerve to 0, 3, 6 and 9 mm of brain stem between both sides. DTI indicated that the ADC values between each 2 distances from pontine cistern section of the trifacial nerve to 0, 3, 6 and 9 mum of brain stem between both sides were significantly different: the ADC values increased along with the distance elevating gradually, but rotated suddenly at the line of 6-9 mm. The FA value increased in 0-6 mm along with the distance reducing gradually, and the neighboring 2 distances had remarkably statistical difference, but the FA value no longer obviously changed from the line of 6-9 mm. Conclusion DTI can distinguish the two-sided trigeminal nerve brain pond section clearly, and may realize each item of DTI. Regular changes are noted in FA and ADC values along with the different distances from pontine cistern section of the trifacial nerve to 0, 3, 6 and 9 mm of brain stem,indicating that DTI enjoys perspective in being clear about the discrimination of cranial nerve CNS section, the change-over portion and the PNS section, and in detecting the cranial nerve vascular compression.

The objective of this study was to investigate Babesia infection among domestic animals in Western Yunnan Province and provide scientific evidence for developing control measures.A total of 1 073 domestic animals blood samples (274cattle,395 sheep,354 dogs,33 horses and 17 donkeys) were collected in 12 counties in Western Yunnan Province.Genomic DNA was extracted and a near full-length 18S rRNA gene sequence of Babesia was amplified by using nested PCR.Babesia species was identified by Blast program and phylogenetic tree.It was indicated that 50 samples were infected with Babesia,belonging to 5 species and with the infection rate of 4.66％.Among 274 cattle blood samples,11 were infected with Babesia (4.01％).Four of them were Babesia bovis and seven of them were Babesia bigemina.Among 395 sheep blood samples,38 were infected with Babesia (9.62 ％),37 of them were Babesia odocoilei-like parasites and 1 of them was Babesia capreoli-like parasites.Horses and donkeys were negative.In conclusion,domestic animals in Western Yunnan Province are infected with many kinds of Babesia,which threaten stock raising development and human health.It is necessary to strengthen prevention of babesiosis and investigate infection rate of babesiosis in human.

OBJECTIVETo establish the integrated discrete multiple organ cell culture (IdMOC) system.

METHODSRat primary cell of hepatocyte, nephrocyte, cardiomyocytes, alveolar macrophage, dermal fibroblasts were isolated by collagenase digestion, separation of bronchial lavage, two-step digestion method and cultured respectively, with monolayer culture. To establish the integrated discrete multiple organ cell culture (IdMOC) system, glass slides of five different cells were used to the same dish with 10% FBS DMEM medium cultured 7d, using MTT comparison primary cells cultured alone and cocultured when growth.

RESULTSEstablished rat hepatocytes, renal cell, cardiomyocyte, alveolar macrophages, dermal fibroblasts separation method was stable, cell separation survival rate was about 90.0%. Hepatocytes separation survival rate 90.3% ,renal cell separation survival rate 91.9%, cardiomyocyte separation survival rate 93.0% and beating rate indifference curve among 3d-15d, alveolar macrophages cell separation survival rate 90.8%, dermal fibroblasts cell separation survival rate 92.7%. Five primary cells multiple organ cells coculture showed cocultured cell growth proliferation well, cultured alone and cocultured cells growth curve basic coincide.

CONCLUSIONEstablished rat multiple organ cell co-culture is successful.

Animals ; Cell Culture Techniques ; methods ; Epithelial Cells ; cytology ; Hepatocytes ; cytology ; Macrophages, Alveolar ; cytology ; Myocytes, Cardiac ; cytology ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo analyze the correlation between the perfusion data and microvessel density (MVD) in ovarian tumors, and investigate the hemodynamic features of the tumors in terms of anatomy and functional CT imaging.

METHODSSix patients with surgically confirmed benign ovarian tumors and 6 with malignant ovarian tumors underwent multi-slice CT perfusion imaging to acquire the perfusion parameters including perfusion, PEI, TTP, BV peak enhancement image(PEI), time to peak(TTP) and blood volume(BV). The tumors were stained and counted by Immunohistochemical staining of the microvessels in the tumor was performed to detect the MVD.

RESULTSs The time-density curves of the benign ovarian tumors increased slowly, reaching the peak at 40 s; the curves of the malignant tumors rose rapidly and continuously and reached the peak at 25 s. The differences in the perfusion data (PEI, TTP, BV) were statistically significant between the benign and malignant tumors (P<0.05). The MVD of the malignant tumors was significantly greater than that of the benign tumors (P<0.05). The mean BV of the malignant ovarian tumor was positively correlated to MVD (r=0.786, P<0.05).

CONCLUSIONMulti-slice spiral CT perfusion imaging can provide accurate enhancement data of the ovarian tumors and helps in the diagnosis and differential diagnosis of the ovarian tumors by presenting the changes of the hemodynamic features in the tumors.

Adult ; Aged ; Capillaries ; pathology ; Cystadenocarcinoma ; blood supply ; diagnostic imaging ; Female ; Fibroma ; blood supply ; diagnostic imaging ; Humans ; Middle Aged ; Ovarian Neoplasms ; blood supply ; diagnostic imaging ; Tomography, Spiral Computed ; methods

OBJECTIVETo explore the association between the progression of gastric cancer and the aberrant methylation of CDH1 gene in preoperative abdominal lavage fluid.

METHODSReal-time methylation-specific polymerase chain reaction(qMSP) was used to investigate the methylation status of the CDH1 gene promoter 5'-CpG islands from preoperative abdominal lavage fluid in 92 patients with gastric cancer. The associations between methylation of CDH1 genes and clinicopathologic features and prognosis were investigated.

RESULTSAmong the 92 patients with gastric cancer, aberrant methylation of CDH1 gene was detected in 45(48.9%) patients, including total aberrant methylation in 12(13.0%) cases and partly aberrant methylation in 33(35.9%) cases. Significant associations were found between CDH1 methylation status and tumor size, growth pattern, differentiation, lymphovascular invasion, infiltration depth, lymph node metastasis, distant metastasis, and clinical staging(all P<0.05). However, there were no significant associations between CDH1 methylation status with gender, age, tumor location, or Helicobacter pylori infection(all P>0.05). The median progression-free survival was 20 months for CDH1 methylation group and 38 months for non-methylated group, and the difference was statistically significant(P<0.01). Cox model analysis revealed that CDH1 methylation status in preoperative peritoneal lavage fluid was an independent factor associated with postoperative survival in patients with gastric cancer(P=0.000, RR=332.88, 95%CI:21.71-5105.07).

CONCLUSIONSThe aberrant methylation of 5'-CpG of CDH1 gene promoter is common in gastric cancer. The examination of CDH1 methylation status of abdominal lavage should be considered in the progression of gastric cancer.

Adult ; Aged ; Cadherins ; genetics ; CpG Islands ; genetics ; DNA Methylation ; Female ; Humans ; Male ; Middle Aged ; Prognosis ; Promoter Regions, Genetic ; Stomach Neoplasms ; genetics ; pathology

Humans ; Infant ; Male ; Phenotype ; Wiskott-Aldrich Syndrome ; diagnosis ; genetics ; immunology