Objective To investigate the influence of 1oganin on proliferation and differentiation of rat preadipocytes. Methods Rat preadipocytes were cultured. The proliferation of rat preadipoeytes was detected by MTT method. The expression of GPDH during the preadipoeytes differentiation was determined by using enzyme tissue chemical way, and the accumulation of cellular lipid was determined by Oil Red O staining. Results Loganin at the concentrations of 8, 16, 32 ? mol/L stimulated rat preadipocyte proliferation, inhibited GPDH increase and lipid accumulation during differentiation in a concentration-dependent manner. Conclusion Loganin can stimulate rat preadipocyte proliferation, inhibite rat preadipocyte differentiation.

0.05).Conclusions The reduced expression of HLA-G on placenta in ICP patients may alter the maternal-fetal immune response and thus be involved in the pathogenesis of this disorder. Dexamethasone can upregulate the expression of HLA-G on placenta.The 14 bp deletion polymorphism in exon 8 of HLA-G gene might not have a significant influence on the development of ICP.

[ ABSTRACT] AIM:To study the effect of livin gene-modified bone marrow mesenchymal stem cells ( BM-MSCs) transplantation on the cardiac function following acute myocardial infarction in a rat model and the expression of livin , caspase-3, caspase-7 and caspase-9 in the livin gene-modified BM-MSCs.METHODS: The MSCs were obtained by the whole bone marrow culture method , and the apoptosis of the MSCs after infection with adenovirus vector carrying enhanced green fluorescent protein ( EGFP) gene and livin recombinant vector ( rAd-livin) were detected by flow cytometry .The ex-pression of livin, caspase-3, caspase-7 and caspase-9 was detected by Western blot .After permanent left anterior descend-ing artery occlusion , the rats were randomized to receive intramyocardial injection of DMEM without cells ( vehicle group ) , or containing MSCs ( MSCs group ) , MSCs ( EGFP ) ( rAd-control/MSCs group ) or MSCs ( livin ) ( rAd-livin/MSCs group).Left ventricular systolic pressure (LVSP), left ventricular end-diastolic pressure (LVEDP), the maximum in-creased rate of left ventricular pressure ( -dp/dtmax ) and the maximum decline rate of left ventricular pressure ( +dp/dtmax ) were recorded for evaluating the cardiac functions .RESULTS: The apoptosis of rAd-livin/MSCs was significantly decreased as compared with MSCs and rAd-control/MSCs (P<0.05).Meanwhile, the expression of caspase-3, caspase-7 and caspase-9 was significantly downregulated as compared with the other 2 groups ( P<0.05 ) .The cardiac function in rAd-livin/MSCs group was significantly improved as compared with DMEM group , and those in the other 2 groups got the similar results, but the function in rAd-livin/MSCs group was better improved .Meanwhile, the number of surviving cells in rAd-livin/MSCs group was significantly improved as compared with the other 2 groups .CONCLUSION:The apoptosis of MSCs is decreased after rAd-livin transfection, and the expression of caspase-3, caspase-7 and caspase-9 is also significant-ly downregulated while the expression of livin is significantly upregulated .Transplantation of livin-modified BM-MSCs by lentiviral vector results in better prognosis for treating myocardial infarction by enhancing cell survival .

Objective To study the value of DSA for hepatic vascular anatomy,and to evaluate the efficacy of portal vein occlusion in rabbits with hepatic VX2 tumor.Methods Twenty New Zealand white rabbits were randomly divided into two groups with 10 in each group,including test group A and positive control group B of ham operation.For the test group A,portal branch ligation(PBL)was performed for the left external branch after 3 weeks of the tumor implantation to the left external lobe.Two weeks later,the DSA of hepatic artery and portal vein were performed in all of the rabbits.Results The total displaying effectiveness of the branches of hepatic artery by DSA was better than that by vascular perfusion.There was hypovascular blood supply to hepatic artery implantation of the tumor in the test group A,comparing with that of the group B.Conclusion DSA can clearly display spacial details of the hepatic vascular anatomy in rabbits,and play an important role in post-procedual evaluation of the portal vein occlusion in rabbits.

As a kind of fluorescent nanoprobe, BHHCT-Eu3+ @ SiO2 fluorescent nanoparticles were synthesized using microwave irradiation. Transmission electron microscopy characterization showed that the nanoparticles were in spherical shape with particle size of about 36 nm. The BHHCT-Eu3+@SiO2 exhibited good fluorescence property, with a maximal excitation wavelength of 343 nm and an maximal emission wavelength of 615 nm. The fluorescence lateral flow immunoassay ( LFIA ) was established for rapid and quantitative detection of kanamycin ( Kana) in milk after BHHCT-Eu3+@SiO2 fluorescent nanoparticles were conjugated with Kana antibody, with dextran as a linker. The limit of detection of Kana with the LFIA method was 0. 85 ng/mL with IC50 of 12. 76 ng/mL, and the detection range was from 3. 0 ng/m to 76 ng/mL. The recoveries of Kana in milk were between 93 . 7% and 97 . 4% with RSD of 3 . 1%-4 . 6%, and cross-reactivity of the fluorescence immunoassay strip for Kana determination was<1%. The detection results of kana in milk samples between the LFIA and traditional ELISA method showed good correlation.

OBJECTIVETo investigate the correlation between four serum fibrosis markers and liver function in patients with infantile hepatitis syndrome (IHS), and to explore the clinical significance of these markers in the diagnosis of IHS and the assessment of disease severity.

METHODSA retrospective study was performed on 60 patients with IHS who were divided into hepatic fibrosis and normal groups based on ultrasound diagnosis. Levels of four liver fibrosis markers, i.e., hyaluronic acid (HA), type III procollagen (PC-III), type IV collagen (IV.C), and laminin (LN), were compared between the two groups, and the correlation between these markers and liver function was analyzed.

RESULTSLevels of liver function markers (alanine aminotransferase (ALT), glutamyl transpeptidase (GGT), total bilirubin (TBil), direct bilirubin (DBil), indirect bilirubin (IBil), and total bile acid (TBA)) in the hepatic fibrosis group were significantly higher than those in the normal group (P<0.05). Levels of HA and IV.C in the hepatic fibrosis group were significantly higher compared with those in the normal group (P<0.05). Furthermore, HA, IV.C, and PC-III levels were positively correlated with those of ALT, TBil, GGT, DBil, IBil, and TBA (r=0.25-0.49), and the strongest correlation existed between HA/IV.C and ALT/jaundice markers.

CONCLUSIONSAssay measuring serum fibrosis markers (HA, IV.C, and PC-III) in combination with liver function tests and ultrasound examination has an important clinical value in the early diagnosis of IHS and evaluation of disease severity.

Biomarkers ; blood ; Collagen Type III ; blood ; Collagen Type IV ; blood ; Female ; Hepatitis ; blood ; diagnosis ; physiopathology ; Humans ; Hyaluronic Acid ; blood ; Infant ; Laminin ; blood ; Liver ; physiopathology ; Liver Cirrhosis ; blood ; diagnosis ; Male ; Retrospective Studies ; Syndrome

OBJECTIVETo evaluate the toxicity of chicken calamus keratin (CCK) conduit as a tissue-engineered scaffold material.

METHODSThe chemical composition of the leaching solution of CCK was determined by means of ultraviolet spectrometry, and the toxic effects of the solution was evaluated by skin sensitization test in rats, intracutaneous stimulation test in rabbits, acute systemic toxicity test in mice, and cytotoxicity test in L929 cells.

RESULTSThe leaching solution of CCK consisted mainly of middle-molecular-weight peptides with a small quantity of macromolecular proteins. Skin sensitization test in rats showed that application of the CCK leaching solution caused no obvious skin reddening, regional edema, or skin necrosis. Intracutaneous injection of the leaching solution in rabbits did not induce obvious skin stimulation manifested by intradermal erythema or edema. In acute systemic toxic test, administration of the leaching solution in mice caused no death, organ dysfunction, cyanosis, tremor, severe peritoneal irritation, ptosis, or dyspnoea. In vitro cytotoxicity test indicated that the cell toxicity of the CCK leaching solution was approximately at 0 level.

CONCLUSIONCCK contained in the treated chicken calamus easily undergoes hydrolysis to release mainly some peptides which do not induce obvious toxic effects, suggesting the safe potential applications of CCK conduit as a tissue-engineering biomaterial.

Animals ; Cell Line ; Cell Proliferation ; drug effects ; Chickens ; Feathers ; chemistry ; Female ; Keratins ; chemistry ; toxicity ; Male ; Mice ; Rabbits ; Rats ; Skin Irritancy Tests ; Solutions ; Tissue Engineering ; Tissue Scaffolds ; chemistry ; Toxicity Tests ; methods

Objective To analyze the magnetic resonance imaging (MRI) features of spinal epidural angiolipoma to improve the diagnostic accuracy of this tumor. Methods The MRI findings in 2 patients with histopathologically confirmed spinal extradural angiolipoma were analyzed retrospectively. Results In both of the cases, the tumors were located in the extradural space of the thoracic intraspinal canal. The spindle-shaped tumor mass extended parallel to the longitudinal axis of the spine. The lesions presented with fat and vascular signal features. One of the tumors grew through the intervertebral foramen with a dumbbell appearance, invading the adjacent diaphragma, vertebral body, pedicle of the vertebral arch and the spinous process. The other tumor consisted of some tortuous and dilated blood vessels with flow void signals. Conclusion Spinal epidural angiolipoma presents characteristic features on MRI, which is considered the best diagnostic modality for this tumor.

Objective To study the value of diffusion tensor magnetic resonance imaging (DT-MRI) in evaluating traumatic optic neuropathy. Methods DT-MRI data of bilateral optic nerve were acquired in 6 patients with unilateral traumatic optic neuropathy. Volume One 1.44 and DTV2 softwares were employed to measure the fraction anisotropy (FA) and average apparent diffusion coefficient (ADC), and to self-compare between the injured and intact optic nerves. The architecture of the optic radiation fiber tracts were displayed with the software of diffusion tensor fiber tracking. Results All of the infraorbital segments of optic nerves were well demonstrated, with suboptimal intracanalicular portion in 2 patients. The average FA of intraorbital optic nerve in 6 patients: the injured side was 0.244±0.067 and the uninjured side was 0.452±0.053 (P=0.000);FA of the injured side obviously decreased. The average value of ADC: the injured side was (1.417±0.121)×10<'-3> mm<'2>/s and the uninjured side was (1.087±0.118)×10<'3> mm<'2>/s (P=0.003);the value of ADC of the injured side obviously increased. Statistically significant differences were noted between the injured side and the uninjured side. The spacial integralities and connected situations of the nerves could be obtained in 4 patients with significant differences between the injured and the uninjured sides. Conclusion DT-MRI can provide useful pathological information in evaluating traumatic optic neuropathy.