ObjectiveTo study the mechanism of differentiation of mesenchymal stem cells(MSCs) into neuron-like cells in vitro.MethodsMSCs of Wistar rats were separated and cultured, and then induced with DMSO and BHA in vitro. The specific marking proteins of neurons, glia and neural stem cells were detected before preinduction, at 24h after preinduction, at 6h, 24h, and 48h after neuronal induction.ResultsAfter the inducement, many MSCs turned into bipolar,multipolar and taper,and then intersected as network structure. Nestin was strong positive at 6h after neuronal induction, and decreased at 24h, 48h after the induction. NeuN was present at 6 h after neuronal induction, and increased at 24h, 48h after the induction.ConclusionMSCs can be induced into neural stem cells(NSCs) at first, and then differentiate into neuron-like cells in vitro.

Objective: To investigate the growth inhibition and apoptosis induction effect of vitamin E succinate (VES) on human colon cancer cells and to analyze the modulation of apoptosis-mediator Fas expression in this process. Methods: Human colon cancer cell line LS174T was treated with VES for 12 h, 24 h and 48 h at the concentrations of 5 mg/L, 10 mg/L and 20mg/L. 1-(4,5-dimethylthiazo-2-yl)-3,5-diphenylformazan (MTT) assay was employed to detect the inhibitory effect of VES on the growth of colon cancer cells. Flow cytometry was then used to analyze the cell cycle of the colon cancer cells after being treated with VES and the apoptotic rate was calculated at the same time. To find out whether the Fas protein expression was modulated in this process, Western blotting assay and flow cytometry were used to detect the Fas protein level in whole cell lystates and on cell surface. Results: VES exhibited a significant inhibitory effect on the growth of human colon cancer cells in a doseand time-dependent manner. After being treated with VES at 5 mg/L, 10 mg/L and 20 mg/L for 48 h, the apoptotic rate of LS174T cells rose from 0.90% to 15.9%, 46.7% and 64.5%, respectively. Fas neutralizing antibody can significantly block VES-induced apoptosis. After the administration of VES, total Fas protein in whole-cell extracts increased in a dose-dependent manner. The flow cytometry showed that the mean fluorescence intensity rose from 5.43 to 9.88, 13.21 and 18.0 after being treated with VES. Conclusion: VES can induce significant growth inhibition and apoptosis in human colon cancer cells. The modulation of Fas expression is one of the mechanisms involved in this process and may be related to the upregulation of Fas molecule on the cancer cell surface.

OBJECTIVETo identify the single nucleotide polymorphisms(SNPs) in the regulatory and coding regions of human Toll-like receptor 4(TLR4) gene and to search for its new genetic makers.

METHODSThe 5' flank region, exons, parts of the introns, as well as 3' flank region of TLR4 gene were sequenced to identify and characterize the SNPs in Chinese population. SNP genotyping was performed by polymerase chain reaction-restriction fragment length polymorphism for 2 highly distributed SNPs.

RESULTSFive novel SNPs were identified through a 4.98 kb sequencing of TLR4 gene. Among them, three were in 5'flank region, two in 3'UTR. In the sample of Han population from Chongqing, the minor allele frequencies of two highly distributed SNPs were 0.266 and 0.404 respectively.

CONCLUSIONSampling analysis in Han population of Chongqing showed that the two highly distributed SNPs of TLR4 were common in Chinese population and could be used for genetic marker of TLR4 gene.

Adult ; Asian Continental Ancestry Group ; genetics ; Base Sequence ; China ; Female ; Gene Frequency ; Humans ; Male ; Middle Aged ; Polymerase Chain Reaction ; Polymorphism, Restriction Fragment Length ; Polymorphism, Single Nucleotide ; Sequence Analysis, DNA ; Toll-Like Receptor 4 ; genetics

OBJECTIVETo identify the single nucleotide polymorphisms (SNPs) in the regulatory and coding regions of human interleukin-1 receptor type I (IL-1R1) gene and to assess their potential effect on the function of IL-1R1.

METHODSThe 5' flank region, exons, parts of the introns, as well as 3' flank region of IL-1R1 gene were sequenced to identify and characterize the SNPs in Chinese population. Effects of the SNP on the structure and function of IL-1R1 were analyzed by computational methods.

RESULTSSixteen SNPs were identified through a 9643 bp sequencing of IL-1R1 gene. Among them, four were in 5' flank region, four in intron region, one in coding region, and seven in 3' untranslated region. A novel SNP in Chinese population was involved in a structural change in IL-1R1, which may influence the signal transduction of IL-1R1.

CONCLUSIONThe SNP in the IL-1R1 gene might influence its function as an important receptor of IL-1 family.

Amino Acid Sequence ; Asian Continental Ancestry Group ; Cell Membrane ; metabolism ; Computational Biology ; Exons ; genetics ; Humans ; Hydrophobic and Hydrophilic Interactions ; Introns ; genetics ; Molecular Sequence Data ; Polymorphism, Single Nucleotide ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Receptors, Interleukin-1 Type I ; chemistry ; genetics ; metabolism ; Sequence Homology, Amino Acid

OBJECTIVETo study the anti-inflammatory and analgesic actions of Aike Mixture (AKM).

METHODSA total of 100 male mice were randomly assigned into 5 groups: a normal control group, a drug control group (a hydrocortisone subgroup and an atropine subgroup), a high-dose AKM group, a mid-dose AKM group and a low-dose AKM group. Xylene was spread on the left ear of the experimental mice to induce inflammation, and 1% acetic acid solution injected into the abdominal cavity to produce pain so as to cause the body bend. Different doses of AKM were given and their actions observed.

RESULTSAKM had obvious anti-inflammatory effect on the xylene-induced ear tumefaction and inhibited the pain-caused body bend in the AKM groups, with significant difference from the normal control (P < 0.01).

CONCLUSIONAKM has good anti-inflammatory and analgesic effects, which is of clinical significance in the treatment of chronic prostatitis.

Animals ; Chronic Disease ; Disease Models, Animal ; Drug Combinations ; Male ; Mice ; Mice, Inbred ICR ; Oleanolic Acid ; analogs & derivatives ; pharmacology ; therapeutic use ; Phytotherapy ; Prostatitis ; drug therapy ; Saponins ; pharmacology ; therapeutic use

Objective:To explore the efficacy and mechanism of Danggui Shaoyaosan on rats of nonalcoholic fatty liver disease （NAFLD）. Method:Sixrty SPF SD male rats were randomly divided into normal group， model group，essentiale （0.144 g·kg^-1） and low， middle and high-dose of Danggui Shaoyaosan groups （2.44， 4.88， 9.76 g·kg^-1）. High fat diet were fed to bulid the NAFLD model， and each treatment group was given corresponding drugs at the same time. After 8 weeks， the serum and liver tissue were collected to detect the contents or activities of total cholesterol （TC）， triglyceride （TG）， alanine aminotransferase （ALT）， aspartic acid aminotransferase （AST）， tumor necrosis factor-α （TNF-α） and interleukin-10 （IL-10） in serum， the contents of TC， TG and free fatty acid （FFA） in liver tissue， Real-time fluorescence quantitative polymerase chain reaction（Real-time PCR） and Western blot were used to observe the gene and protein expressions of Toll-like receptor 4 （TLR4）， myeloid different factory 88 （MyD88） and c-Jun n-terminal kinase （JNK） and the protein expression of phosphorylation JNK（p-JNK） in liver tissue. Hematoxylin-eosin （HE） staining and Oil red staining to observe the pathological morphological changes of liver. Result:Compared with control group， the contents or activities of TC， TG， ALT， AST and TNF-α in serum， the contents of TC， TG and FFA in liver and the gene and protein expressions of TLR4， MyD88， JNK， and the protein expression of p-JNK in liver tissue of model group were distinctly increased （P<0.01）， the content of IL-10 was significantly decreased （P<0.01）. Compared with model group， the contents or activities of TC， TG， ALT， AST and TNF-α in serum， the contents of TC， TG and FFA in liver and the mRNA and protein expressions of TLR4， MyD88 and JNK， and the protein expression of p-JNK in liver tissue of Danggui Shaoyaosan groups were significantly reduced （P<0.05，P<0.01）， the content of IL-10 in serum of Danggui Shaoyaosan groups was distinctly increased（P<0.05，P<0.01）， HE staining and Oil red staining show that the degree of liver steatosis was alleviated obviously by Danggui Shaoyaosan. Conclusion:Danggui Shaoyaosan has a better treatment on NAFLD by inhibiting TLR4/MyD88/JNK pathway and alleviating the inflammation response.

OBJECTIVE: To compare the therapeutic effect of different animal bile powders on lipid metabolism disorders induced by high-fat diet in rats, and analyze the bioactive components of each animal bile powder. METHODS: Sixty Sprague-Dawley rats were randomly divided into 6 groups (n=10): normal diet control group, high-fat diet model group, high-fat diet groups orally treated with bear, pig, cow and chicken bile powders, respectively. Serum biochemical markers from the abdominal aorta in each group were analyzed. Changes in the body weight and liver weight were recorded. Pathohistological changes in the livers were examined. High performance liquid chromatography coupled with quadrupole time-of-flight tandem mass spectrometry was used to determine the composition of bioactive components in each animal bile powder. RESULTS: Treatment with different types of animal bile powders had different inhibitory effects on high-fat diet-induced increase of body weight and/or liver weight in rats, most notably in bear and pig bile powders (P<0.05). High-fat diet induced lipid metabolism disorder in rats, which could be reversed by treatment with all kinds of bile powders. Bear bile and chicken bile showed the most potent therapeutic effect against lipid metabolism disorder. Cow and bear bile effectively alleviated high-fat diet induced liver enlargement and discoloration, hepatocyte swelling, infiltration of inflammatory cells and formation of lipid vacuoles. Bioactive component analysis revealed that there were significant differences in the relative content of taurocholic acid, taurodeoxycholic acid and ursodeoxycholic acid among different types of animal bile. Interestingly, a unique component with molecular weight of 496.2738 Da, whose function has not yet been reported, was identified only in bear bile powder. CONCLUSIONS Different animal bile powders had varying therapeutic effect against lipid metabolism disorders induced by high-fat diet, and bear bile powder demonstrated the most effective benefits. Bioactive compositions were different in different types of animal bile with a novel compound identified only in bear bile powder.
Animals ; Bile/metabolism* ; Biomarkers/metabolism* ; Body Weight ; Cattle ; Diet, High-Fat ; Female ; Lipid Metabolism ; Lipid Metabolism Disorders/metabolism* ; Lipids/analysis* ; Liver/metabolism* ; Powders ; Rats ; Rats, Sprague-Dawley ; Swine ; Taurodeoxycholic Acid/metabolism* ; Ursidae/metabolism* ; Ursodeoxycholic Acid/metabolism*

To efficiently remove all recurrent lymph nodes (rLNs) and minimize complications, we developed a combination approach that consisted of ⁶⁸Gallium prostate-specific membrane antigen (PSMA) ligand positron emission tomography (PET)/computed tomography (CT) and integrated indocyanine green (ICG)-guided salvage lymph node dissection (sLND) for rLNs after radical prostatectomy (RP). Nineteen patients were enrolled to receive such treatment. ⁶⁸Ga-PSMA ligand PET/CT was used to identify rLNs, and 5 mg of ICG was injected into the space between the rectum and bladder before surgery. Fluorescent laparoscopy was used to perform sLND. While extensive LN dissection was performed at level I, another 5 mg of ICG was injected via the intravenous route to intensify the fluorescent signal, and laparoscopy was introduced to intensively target stained LNs along levels I and II, specifically around suspicious LNs, with ⁶⁸Ga-PSMA ligand PET/CT. Next, both lateral peritonea were exposed longitudinally to facilitate the removal of fluorescently stained LNs at levels III and IV. In total, pathological analysis confirmed that 42 nodes were rLNs. Among 145 positive LNs stained with ICG, 24 suspicious LNs identified with ⁶⁸Ga-PSMA ligand PET/CT were included. The sensitivity and specificity of ⁶⁸Ga-PSMA ligand PET/CT for detecting rLNs were 42.9% and 96.6%, respectively. For ICG, the sensitivity was 92.8% and the specificity was 39.1%. At a median follow-up of 15 (interquartile range [IQR]: 6-31) months, 15 patients experienced complete biochemical remission (BR, prostate-specific antigen [PSA] <0.2 ng ml^-1), and 4 patients had a decline in the PSA level, but it remained >0.2 ng ml^-1. Therefore, ⁶⁸Ga-PSMA ligand PET/CT integrating ICG-guided sLND provides efficient sLND with few complications for patients with rLNs after RP.
Gallium Isotopes ; Gallium Radioisotopes ; Humans ; Indocyanine Green ; Ligands ; Lymph Node Excision ; Lymphatic Metastasis/diagnostic imaging* ; Male ; Neoplasm Recurrence, Local/surgery* ; Positron Emission Tomography Computed Tomography ; Prostate ; Prostatectomy ; Prostatic Neoplasms/surgery* ; Salvage Therapy

Objective:To observe Plantaginis Semen's mechanism in treating diarrhea by observing the effect on inflammatory factors in serum and mRNA and protein expressions of aquaporin4 (AQP4) in colon tissue of diarrhea rats. Method:Senne Folium was orally administered to duplicate diarrhea rats. Sixty male SD rats were randomly divided into normal group, model group, hydrochlorothiazide group (9 mg·kg^-1), and low, middle, and high-dose Plantaginis Semen groups (0.95, 1.9, 3.8 g·kg^-1). Senne Folium (20 mL·kg^-1) was intragastrically administered in 5 groups in the morning, except for normal group that was orally given the same dose of distilled water. In the afternoon, each treatment group was orally given the corresponding drugs, while normal group and model group were orally given the same dose of distilled water. The loose stool rate, average degree of loose stool, and diarrhea index were compared according to fecal traits and stool times after 14 days of treatment. The serum and colon tissue were collected to detect the contents of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and C-reactive protein (CRP) in serum. Hematoxylin-eosin (HE) staining was used to observe the pathological morphological changes of colon tissue, and quantiative Real-time fluorescent quantitative polymerase chain reaction (Real-time PCR) and Western blot were used to detect the mRNA and protein expressions of AQP4 in colon tissue. Result:In the model group, the loose stool rate, average degree of loose stool, and diarrhea index were significantly increased (P<0.01), apoptosis and necrosis were observed in the epidermal cells of colonic mucosa, telangiectasia and congestion in lamina propria were obvious, and a few neutrophils were infiltrated, and the contents of TNF-α, IL-6 and CRP in serum increased (P<0.05, P<0.01), the mRNA and protein expressions of AQP4 significantly decreased (P<0.01). Compared with the model group, the loose stool rate, average degree of loose stool, and diarrhea index were significantly decreased in low, middle, and high-dose Plantaginis Semen groups (P<0.01), the apoptosis and necrosis of epidermal cells, telangiectasia and hyperemia and neutrophil infiltration in colonic mucosa were obviously improved, and the contents of TNF-α and CRP in serum significantly decreased (P<0.05, P<0.01), the mRNA and protein expressions of AQP4 increased （P<0.05, P<0.01）. Conclusion:Plantaginis Semen has a better antidiarrheal effect, and its mechanism may be related to inhibition of inflammatory reaction, repair of pathological damage of colonic mucosa, up-regulation of AQP4 expression and promotion of water and fluid metabolism.