Mesenchymal Stem Cell Transplantation ; Mesenchymal Stromal Cells ; cytology ; Nervous System Diseases ; surgery

Objective To establish the amplified luminescent proximity homogeneous assay(AlphaLISA) for the detection of Sendai virus.Methods The antigen concentration,serum concentration and the donor beads/acceptor beads ratio used in the AlphaLISA method were optimumized by the phalanx experiments, then the antibodies of Sendai Virus in 40 rat sera were detected by the established AlphaLISA method and ELISA detection method.The results were compared and the differentia between the two methods was confirmed by IFA.Results The optimum concentration of SV bio-peptide in AlphaLISA assay was 250 nmol/L, the best proportion of donor beads/acceptor beads ratio was 1 ∶1, using the concentration of 20 μg/mL and the serum dilution was 1∶10000.7 of the 40 rat sera were detected SV positive by ELISA, the positive rate was 17.5%, 8 of the 40 rat sera were determined SV positive by AlphaLISA, and the positive rate was 20.0%, the AlphaLISA positive serum was confirmed by IFA.Conclusions We preliminary established the Amplified Luminescent Proximity Homogeneous Assay(AlphaLISA) for the detection of Sendai virus.The sensitivity of the method is comparable to classical ELISA method, but this method use less serum samples and without washing steps.The method has some advantages in degeneracy and accuracy.

Intraperitoneal chemotherapy is a useful treatment of advanced gastric cancer.Following intraperitoneal chemotherapy, the concentration of drugs in the peritoneum and in the portal vein was high, lasting and sustained.Early post-operation chemotherapy showed better results.This article will summarize the newest research progress of intraperitoneal chemotherapy in the treatment of advanced gastric cancer.

Adjuvants, Immunologic ; therapeutic use ; Adult ; Aged ; B-Lymphocytes ; immunology ; CD4-CD8 Ratio ; Carcinoma, Hepatocellular ; drug therapy ; immunology ; surgery ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Killer Cells, Natural ; immunology ; Liver Neoplasms ; drug therapy ; immunology ; surgery ; Male ; Middle Aged ; Perioperative Care ; Phytotherapy ; T-Lymphocyte Subsets ; immunology

Objective To investigate the effects of Plasmodium vivax merozoite surface protein 1(PvMSP1)on differentia-tion,maturation and function of dendritic cells(DC)and the mechanisms of PvMSP1 on the activation of DC via toll like receptors (TLR). Methods DCs were incubated with different doses of PvMSP1(1.0,10.0,100.0μg/ml)in vitro. The changes of CD83, CD86,and HLA-DR on DC were detected by flow cytometry(FCM);the expressions of cytokine IL-10 and IL-12 of DC were mea-sured by ELISA;the expressions of TLR4 and TLR9 mRNA of DC were measured by RT-PCR;the proliferation induction to autol-ogous lymphocytes of DC was measured by MTT. Meanwhile,the untreated DC and LPS inducing DC were as the negative control and positive control,respectively. All the data were analyzed statistically. Results Compared with the untreated DC,the propor-tions of CD83,CD86 and HLA-DR on DC induced by LPS and PvMSP1 increased significantly(all P<0.05);the expressions of IL-10 and IL-12 of DC induced by LPS increased significantly(P<0.01),and those induced by PvMSP1 also increased signifi-cantly(all P<0.05). In the LPS inducing group,the TLR4 mRNA production increased(P<0.05)and the TLR9 mRNA produc-tion had no significantly changes(P>0.05). In the PvMSP1-treated group,the DC TLR4 mRNA production increased(P<0.01) and the TLR9 mRNA production had no significantly changes(P>0.05);DC stimulated the proliferation of autologous lympho-cytes. Conclusion PvMSP1 enhances DC differentiation and maturation,and the mature DC induced by PvMSP1 has the ability of antigen presenting. The route for PvMSP1 inducing DC maturation might be TLR4 pathway rather than TLR9 pathway.

Objective To compare the mRNA level of macrophage inflammatory protein-3α(MIP-3α) in 3 different mucosal epithelial cell lines. Methods RNA standards were prepared by in vitro transcription. One-step real-time RT-PCR was established and optimized using TaqMan EZ RT-PCR Core Reagents with TaqMan probes and primers specific to human MIP-3α mRNA sequence. The specificity of one-step real-time RT-PCR method was confirmed by sequencing the PCR products. The sensitivity and reproducibility of the method was examined by repeating the test 8 times with the same sample. Results The one-step real-time RT-PCR with a wide detection range is sensitive, reproducible. It was found that MIP-3α mRNA level in Caco-2 and T-84 cells was much higher than that in the HeLa cells. Conclusion High level of MIP-3α mRNA could be found in mucosal epithelial cells and difference in transcription level of MIP-3α may exist in epithelial cells from different mucosa.

OBJECTIVETo determine whether the cardioprotection of puerarin (Pue) against hypoxia/reoxygenation injury is mediated by mitochondrial ATP-sensitive potassium channel (mitoK(ATP)) and/or mitochondria calcium-activated potassium channel(mitoK(Ca)).

METHODSCardiomyocytes were isolated from male Sprague-Dawley rats and hypoxia/reoxygenation injury was induced by myocyte pelleting model. Cell viability was assessed by trypan blue exclusion and mitochondrial membrane potential was measured by loading with TMRE. The opening of mitochondrial permeability transition pore was determined spectrophotometrically.

RESULTSPretreatment with Pue at 0.24 mmol/L for 5 min increased the cell viability against hypoxia/reoxygenation injury, while mitochondrial ATP-sensitive potassium channel inhibitor 5-hydroxydecanoate (5-HD, 100 micromol/L, 20 min) or mitochondrial calcium-activated potassium channel blocker paxilline (Pax, 1 micromol/L, 5 min) attenuated the effect of puerarin. The pretreatment with Pue at 0.24 mmol/L for 5 min attenuated collapse of delta-psim induced by hypoxia/reoxygenation injury, 5-HD and Pax abrogated the effect of Pue. In mitochondria isolated from hearts pretreated with Pue, a significant inhibition of Ca(2+)-induced swelling was observed, and this inhibition was attenuated by 5-HD and Pax.

CONCLUSIONThese findings indicate that Pue protects cardiomyocytes against hypoxia/reoxygenation injury via activating mitoK(ATP) channel and mitoK(Ca) channel, and inhibiting mitochondrial permeability transition pore opening.

Androsterone ; pharmacology ; Animals ; Cell Hypoxia ; drug effects ; Cells, Cultured ; Indoles ; pharmacology ; Isoflavones ; pharmacology ; Male ; Mitochondrial Membrane Transport Proteins ; metabolism ; Myocardium ; cytology ; Myocytes, Cardiac ; drug effects ; metabolism ; Potassium Channels ; metabolism ; Potassium Channels, Calcium-Activated ; metabolism ; Rats ; Rats, Sprague-Dawley

To discover novel fluoroquinolone lead compounds as possible anti-infective or/and antitumor chemotherapies, combination principle of pharmacophore-based drug design, a series of novel tricyclic fluoroquinolone title compounds, [1,2,4]triazino[3,4-h][1,8]naphthyridine-8-one-7-carboxylic acid derivatives ( 5a-5p), were designed and synthesized with a fused [1,2,4]-triazine ring unit. Their structures were characterized by spectral data and elemental analysis and the in vitro antibacterial and anti-cell proliferation activities were also evaluated. The results showed that the titled compounds exhibited more significant inhibitory activities against drug-resistant bacteria (Methicillin-resistant Staphylococcus aureus and multi drug-resistant Escherichia coli strains) and three tested cancer cell lines (human hepatoma SMMC-7721, murine leukemia L1210 and human murine leukemia HL60 cells). Interestingly, SAR showed that compounds with electron-donating groups attached to benzene ring had stronger antibacterial activity than antitumor activity, but electron-withdrawing compounds displayed more potential antitumor activity than antibacterial activity, especially antitumor activity of nitro compounds was comparable to comparison doxorubicin. Thus, novel triazine-fused tricyclic fluoroquinolones as potent anti-infective or/and antitumor lead compounds are valuable to pay attention and for further development.
Animals ; Anti-Bacterial Agents ; chemical synthesis ; chemistry ; Antineoplastic Agents ; chemical synthesis ; chemistry ; Carboxylic Acids ; Carcinoma, Hepatocellular ; Cell Line ; Cell Proliferation ; Drug Design ; Escherichia coli ; drug effects ; Fluoroquinolones ; chemical synthesis ; chemistry ; HL-60 Cells ; Humans ; Leukemia L1210 ; Liver Neoplasms ; Methicillin-Resistant Staphylococcus aureus ; drug effects ; Mice ; Naphthyridines ; Triazines

Objective To assess the status and severity of bone disease in patients with multiple myeloma (MM) by using chest computerized tomography (CT) and the relationship between clinical prognostic parameters and bone disease.Methods All 46 newly diagnosed MM in-patients received both imaging tests of chest CT and plain X ray.An experienced radiologist reviewed all the imaging data.Clinical laboratory parameters,stages of Durie-Salmon (DS) and International Staging System (ISS) were evaluated.Five cytogenetic abnormalities of bone marrow myeloma cells were tested by fluorescence in situ hybridization (FISH).Results The sensitivity of CT and X ray to determine pathological fractures was comparable,the positive rates of which were 41.3％ (19/46) and 30.4％ (14/46) respectively (P =0.29).Nevertheless,the positive rate of osteolytic lesions ascertained by CT was significantly higher than that by X ray (P ＜ 0.001),60.9％ (28/46) vs 13.0％ (6/46) with diameter 5-10 mm and 50.0％ (23/46) vs 10.9％ (5/ 46) with diameter more than 10 mm.Osteolytic lesion numbers found by CT were more than those by X ray [5(0-21) vs0(0-4) lesions with diameter5-10 mm (P＜0.001),2(0-14) vs0(0-2) lesions with diameter more than 10 mm (P ＜ 0.001),respectively].Patients with positive osteolytic lesions had higher percentage of RB1 gene deletion[46.7％ (14/30) vs 18.8％ (3/16),P ＜0.001],D13s319 deletion [43.3％ (13/30) vs 18.8％ (3/16),P ＜0.001] and high risk cytogenetic abnormalities[50.0％ (15/30) vs 25.0％ (4/16),P ＜ 0.001].Conclusions Chest CT is more sensitive than plain X ray in detecting osteolytic myeloma bone disease.Osteolysis determined by CT is relevant to clinical DS stages and risk stratification of cytogenetic abnormalities.

To discover novel antitumor rhodanine unsaturated ketones, a series of fluoroquinolone (rhodanine α, β-unsaturated ketone) amine derivatives (5a-5r) were designed and synthesized with fluoroquinolone amide scaffold as a carrier. The structures of eighteen title compounds were characterized by elemental analysis, 1H NMR and MS. The in vitro anti-proliferative activity against Hep-3B, Capan-1 and HL60 cells was evaluated by MTT assay. The results showed that the title compounds not only had more significant anti-proliferative activity against three tested cancer cell lines than that of the parent ciprofloxacin 1, but also exhibited the highest activity against Capan-1 cells. The SAR revealed that some compounds carrying aromatic heterocyclic rings or phenyl attached to an electron-withdrawing carboxyl or sulfonamide substituent were comparable to or better than comparison doxorubicin against Capan-1 cells. As such, it suggests that fluoroquinolone (rhodanine α, β-unsaturated ketone) amines are promising leads for the development of novel antitumor fluoroquinolones or rhodanine analogues.