Apoptosis ; Female ; Gardening ; Humans ; Leukocytes ; drug effects ; pathology ; Male ; Occupational Exposure ; adverse effects ; Pesticides ; adverse effects

Objective To study the bone marrow-derived mesenchymal stem cell(MSC) potential as seed cells for treatment of multiple organ dysfunction syndrome(MODS) in rabbit model, lay fundamental for clin-ical utilization of the MSC for treatment of MODS. Methods MODS rabbit model was established by hemor-rhagic shock combined with endotoxin, isolation and characterization of rabbit bone marrow mesenchymal stem cells labeled MSC with GFP by lentivirus transfection, administration of MSC by ear margin vein injec-tion, MSC integration determined by PCR and pathological section, the MSCs effect on MODS rabbits evalu-ated by physical observation. Results Compared with controls, ransplanted MSCs were found in liver, lung, kidney, MODS rabbits were physically improved obviously. Conclusions MSCs are able to integrate into host without any rejection reaction, and capable of ameliorating MODS evidently.

Objective • To study the differences and correlations of quantitative analysis between Cedars-Sinai quantitative gated SPECT (QGS) and Emory cardiac toolbox (ECTb) used in single photon emission computed tomography (SPECT) gated myocardial perfusion imaging (G-MPI). Methods • A total of 28 patients were examined with 99mTc-methoxyisobutylisonitrile (99mTc-MIBI) SPECT G-MPI. The left ventricular ejection fraction (LVEF), end-diastolic volume (EDV), end-systolic volume (ESV), phase histogram bandwidth (PHB) and phase standard deviation (PSD) were calculated with QGS and ECTb. The correlations and differences of the results from these two programs were analyzed. Results • These two software programs showed high correlation for LVEF, EDV and ESV (LVEF: r=0.917, P=0.000. EDV: r=0.976, P=0.000. ESV: r=0.981, P=0.000). The analysis showed no significant correlation for PHB and PSD (PHB: r=0.319, P=0.055. PSD: r=0.172, P=0.310). In the analysis of cardiac function, the ESV measured by QGS was higher than that measured by ECTb, and the EDV and LVEF were lower than those measured by ECTb. In the phase analysis, the PSD and PHB measured by QGS were lower than those measured by ECTb. These differences between the results measured by the two software programs were not consistency. There were significant differences in LVEF, ESV and PSD in the comparison of QGS and ECTb [LVEF: (47.8±16.9)% vs (57.4±17.2)%, P=0.000. ESV: (67.5±51.0) mL vs (58.3±50.0) mL, P=0.000. PSD: 20.5º±10.3º vs 30.6º±18.9º, P =0.004]. The EDV and PHB showed no significant difference between the QGS and ECTb [EDV: (116.8±52.8) mL vs (120.8±55.7) mL, P=0.050. PHB: 72.2º±37.0º vs 86.1º±55.7º, P=0.139]. Conclusion • These two software programs have good consistency in quantitative analysis of cardiac function. But the result shows no significant consistent in the evaluation of left ventricular mechanical dyssynchrony. There are differences between the data measured by QGS and ECTb. Using the results measured by the two software programs for direct comparison may be not suitable in clinical applications. The differences between these two software programs indicate that it may be necessary to establish a normal databases in clinical work based on the local conditions.

Aim To investigate the effects of saponin of sea cucumber ( SSC ) on the blood pressure in obese mice. Methods C57BL/KsJ(db/db) mice were ran-domized into 3 groups ( 8 mice each ): model group, low-dose SSC group and high-dose SSC group. Normal C57BL/KsJ mice were used as control. The low and high SSC groups were fed on basal diets incorporated with 0. 02% and 0. 04% SSC. Different treatments were administered for 6 weeks and arterial pressure was measured in the third and sixth weeks. The abundance of renal ACE, ACE2 and REN mRNA was detected by real time PCR . Results Compared with control group, the blood pressure of model group mice was ob-viously raised ( P<0. 01 ) . Low-dose SSC group mice showed lower blood pressure than model group without statistically significant differences, and the blood pres-sure of high-dose SSC group mice was similar to that of control group and significantly lower than model group. ( P<0. 05 ) There were no remarkable differences a-bout ACE and REN mRNA among the groups, howev-er, ACE2 mRNA level was significantly increased in high-dose SSC group. Conclusion SSC plays a vital role in decreasing blood pressure, which probably re-lates to the regulating function of renin-angiotensin sys-tem( RAS) .

Objective:To investigate the wear resistance of four low-shrinkage commercial composite resins and two traditional composite resins in vitro and discuss the relative influencing factors, and to illustrate the inner relationship of the wear resistance of resins and material composition.Methods:Four low-shrinkage commercial composite resins including CLEARFIL MAJESTY Posterior(CMP), Filtek LS(LS), Admira(AD), Kalore(KA) and two traditional composite resins including Filtek Z350XT (Z350), Solitaire2(S2) were chosen.The bar-shaped specimens were fabricated and mounted in a UMT-2 wear testing machine and abraded with the two-body media (distilled water) with a Si3N4 ball as antagonist.The maximum wear depth was determined after 14 400 cycles.The friction coefficient was determined during the test.The worn surfaces were examined with SEM.Results:CMP showed the lowest maximum wear depth and KA presented the highest maximum wear depth.The maximum wear depth ranked as follows: CMP

AIM: To study the expression profile of QKI m RNA and protein in rat heart during pathological cardiac hypertrophy. ME THODS: A rat cardiac hypertrophy model was established using continuous norepinephrine (NE) perfusion. Real-time PCR and Western blotting were applied t o examine QKI mRNA and protein expression respectively in rat heart. RES ULTS: Both mRNA and protein of three QKI isoforms were detected in adult rat heart. QKI-5 mRNA and total QKI protein were remarkably decreased in NE-ind uced hypertrophic heart compared with those in control group (P

Objective To explore atechnical modification bytransperineal Da-Wanorectoplasty(Da-WARP) ontreatinglow,intermedi-ate anorectal anomalies(AA) andto evaluate the results of long-termfollowup.Methods Forty-six cases of AAunderwent a Da-WARP,whichinvolved preservation of the rectal end of the fistula andinvagination of the perineal skinflapthroughthe neoanus.The clinical records werereviewed and analyzedretrospectively.Results The medianfollow-up period was 7 years and 2 months.All of themachieved a goodfecal conti-nence exception of 1 patient withintermediate AAand associated anomaly,hadfair result.Conclusions The Da-WARPis relativelysimple andpractical methods for surgical treatment of low,intermediate AA,with goodlong-termresults.

Objective To explore a technical modification by transperineal Da-W anorectoplasty(Da-W ARP) on treating low,intermediate anorectal anomalies(AA) and to evaluate the results of long-term follow up.Methods Forty-six cases of AA underwent a Da-W ARP,which involved preservation of the rectal end of the fistula and invagination of the perineal skin flap through the neoanus.The clinical records were reviewed and analyzed retrospectively.Results The median follow-up period was 7 years and 2 months.All of them achieved a good fecal continence exception of 1 patient with intermediate AA and associated anomaly,had fair result.Conclusions The Da-W ARP is relatively simple and practical methods for surgical treatment of low,intermediate AA,with good long-term results.

Objective To explore a technical modification by transperineal Da- W anorectoplasty (Da WARP) on treating low, intermediate anorectal anomalies(AA) and to evaluate the results of long - term follow up. Methods Forty six cases of AA underwent a Da-W ARP,which involved preservation of the rectal end of the fistula and invagination of the perineal skin flap through the neoanus.The clinical records were reviewed and analyzed retrospectively. Results The median follow - up period was 7 years and 2 months. All of them achieved a good fecal continence exception of 1 patient with intermediate AA and associated anomaly,had fair result. Conclusions The Da - WARP is relatively simple and practical methods for surgical treatment of low, intermediate AA, with good long - term results.

Leukemia seems to depend on a small population of "leukemia stem cells (LSCs)" for its growth and metastasis. However, the precise surviving mechanisms of LSCs remain obscure. Cellular senescence is an important obstacle for production and surviving of tumor cells. In this study we investigated the activated state of a pathway, in which reactive oxygen species (ROS) induces cellular senescence through DNA damage and phophorylation of p38 MAPK (p38), in myeloid leukemic CD34(+)CD38(-) cells. Bone marrow samples were obtained from patients with acute myeloid leukemia (AML, n=11) and chronic myeloid leukemia (CML, n=9). CD34(+)CD38(-) cells were isolated from mononuclear cells from these bone marrow samples, and K562 and KG1a cells (two kinds of myeloid leukemia cell lines) by mini-magnetic activated cell sorting. Hematopoietic stem cells (HSCs) from human cord blood served as controls. Intracellular ROS level was detected by flow cytometry. DNA damage defined as the γH2AX level was measured by immunofluorescence staining. Real-time RT-PCR was used to detect the expression of p21, a senescence-associated gene. Western blotting and immunofluorescence staining were employed to determine the p38 expression and activation. The proliferation and apoptosis of CD34(+)CD38(-) cells were detected by MTT assay and flow cytometry. Our results showed that ROS and DNA damage were substantially accumulated and p38 was less phosphorated in myeloid leukemic CD34(+)CD38(-) cells as compared with HSCs and H(2)O(2)-induced senescent HSCs. Furthermore, over-phosphorylation of p38 by anisomycin, a selective activator of p38, induced both the senescence-like growth arrest and apoptosis of CD34(+)CD38(-) cells from K562 and KG1a cell lines. These findings suggested that, although excessive accumulation of oxidative DNA damage was present in LSCs, the relatively decreased phosphorylation of p38 might help leukemic cells escape senescence and apoptosis.