Objective Stem cell transplantation is a new approach to the treatment of lower limb ischemia ( LLI) .This study was to investigate the therapeutic effect of the transplantation of autologous bone marrow mesenchymal stem cells ( BM-MSCs) in the treatment of LLI. Methods We established the left LLI model in 12 New Zealand rabbits and divided them into a control and a trial group of equal number.The control animals were injected with DMEM, while the rabbits in the trial group with autologous BM-MSCs, into the ischemic skeletal muscle.Four weeks after injection, we performed CT angiography and perfusion imaging of both lower limbs of the rabbits and conducted HE staining of the paraffin sections of the skeletal muscle of the ischemic limbs. Results Dynamic ob-servation revealed different degrees of ecderon necrosis in 2 of the LLI models in the control group, even with toenail coloboma, but no necrosis in the trial group except for some slight muscular atrophy. Both collateral arteries and blood perfusion were obviously increased in the ischemic lower limbs in the trial than in the control group.HE stai-ning showed a significantly higher density and percentage of capillaries in the skeletal muscle fibers in the former than in the latter ([6.500 ± 1.049]/HP vs [3.670 ±0.816]/HP, [9.68 ±0.56]%vs [5.87 ± 0.86]%, P<0.01), with no necrosis in either group, nor hematoma, bony tissue, or fibroid tumor in the trial group. Conclusion Autologous transplantation of BM-MSCs can improve neovascularization in ischemic lower limbs in rabbits and can be used as a safe and effective treatment of limb ischemia.

Objective:To elucidate the signal transduction mechanism of the modulation of immune cells by estrogen,the effect of 17?-estradiol(E2)on the production of nitric oxide (NO)from spleen mononuclear cells(MNC)of rats and the expression of inductible NO synthase(iNOS) in estrogen receptor(ER) knockout mice were examined.Methods:Culture of the spleen MNC from normal,Freund's incomplete adjuvant(FIA)or myelin basic protein(MBP) immunized Lewis rats.Detection NO production in the supernatant of culture was determined by Griess reagent.The expression of iNOS in spleen sections were observed by immunofluorescence staining.Results:①E2 dose-dependently induce NO production in spleen MNC from normal rats,MNC from FIA or MBP immunized rats manifest in the same manner.iNOS INHIBITOR l-NAME or MAPK blocker could suppress the induction.②In vivo E2 enhanced iNOS expression in wild type mice(WT),but had no effect in ER ? knockout mice(EPKO).ER? knockout mice(BERKO)appear the same with wt.Conclusion:E2 could modulate the immune system via induction of NO,which involves both genomic and nongenomic mechanisms.

Objective To evaluate the clinical efficacy and safety of a fractional bipolar radiofrequency device for the treatment of wrinkles of the face and neck.Methods This study enrolled 39 volunteers (including 37 females and 2 males aged 35-60 years) with Fitzpatrick skin type Ⅳ-Ⅴ and Fitzpatrick wrinkle scale score of 4-6.All the subjects received three sessions of treatment with a fractional bipolar radiofrequency device at intervals of 4-6 weeks.Follow-up visits were scheduled at one month after each treatment session for evaluation of efficacy (using standardized photography),subjective satisfaction and adverse effects.Results After three sessions of treatment,all the subjects experienced a significant decrease in Fitzpatrick wrinkle scale compared with baseline values,and wrinkle improvement score increased with the increase in treatment sessions.The Fitzpatrick wrinkle scale score for forehead wrinkles,glabella wrinkles,fishtail lines and neck wrinkles in these subjects after three sessions of treatment significandy differed from that before treatment (all P ＜ 0.01).Significant differences were also observed in the wrinkle improvement score for forehead wrinkles between these subjects after two sessions and one session of treatment (P ＜ 0.01),and observed in that for glabella wrinkles,fishtail lines and neck wrinkles between these subjects after three sessions and one session of treatment (P ＜ 0.05 or 0.01).Side effects were mild with no significant downtime.Conclusion Fractional bipolar radiofrequency may be a safe and effective option for the treatment of wrinkles of the face and neck in individuals with Fitzpatrick skin type Ⅳ-Ⅴ.

AIM:To study functions of pro-domain in tumor necrosis factor-? converting enzyme (TACE) maturation and to develop an approach to interfere with inflammation processes. METHODS: The plasmid pIRES2-EGFP was used to generate the expression plasmids constructed with the signal peptide and pro-domain, full length or without the pro-domain(designated as pIRES2-EGFP/T648, pIRES2-EGFP/T2472, pIRES2-EGFP/T57-T1824,respectively). The plasmids were used to transfect the U937 cells.After the transfected cells were stimulated by LPS, the effect of expression plasmids on TNF-? secretion was detected by ELISA and flow cytometry(FCM).RESULTS: The plasmid pIRES2-EGFP/T648 inhibited 61.09% TNF-? secretion and mediated the accumulation of TNF-? on the surface of U937 cells.The sTNF-? secretion and the level of the mTNF-? in the plasmid pIRES2-EGFP/T57-T1824 transfected cells had no significant deviation compared with the pIRES2-EGFP transfected cells. The sTNF-? secretion of the cells transfected by the plasmid pIRES2-EGFP/T2472 increased and the level of the mTNF-? decreased.CONCLUSION: The pro-domain has dual effects in TACE maturation and might be applied to molecular design of anti-inflammation drug.

objeetive To consecutively understand the current national clinical testing quality and enforce quality-control of auto-antibody detection.Methods Hospitals or departments were recruited by letters or telephone communications:The autoantibodies examined for quality control survey included anti-nuclear antibodies (ANA),anti-double-stranded DNA (A-dsDNA)antibody,anti-extractable nuclear antigens(A-ENA)antobodies,anti-mitochondria antibody(AMA)/anti-smooth muscle antibody(ASMA),and anti-CCP antibody.Each autoantibody was tested in 3 samples, and altogether 15 samples in total for testing.Sample designation and testing results data analysis were double-blinded.Results Fifltv-five hospitals/departments participated in this survey.The accuracy rates for this survey were 92%,89%,96%,72%respectively for ANA,A-dsDNA,AMA/ASMA,and anti-CCP.Anti-ENAs were further divided into anti-RNP,Sm,SSA,SSB and Scl-70 subgroups,and the accuracy rates were 98%,89%,92%,75%and 77% respectively.Conelusion Compared to the previous 3 national surveys.accuracy rates in our country's autoantibody testing is increaseing steadly with more testing items included each year.This indicats that the quality of auto-antibody testing is improving across the country.

Objective To evaluate the effectiveness of health management on quality of life of hypertensive patients living in underdeveloped rural regions. Methods Minqin County of Gansu Province was taken as research field, and health education covered all the population. Individual follow-up was adopted by quasi-experiment,and SF-8 scale was used to evaluate the change of scores of quality of life at baseline and the end of the study. Results The score of various dimension of quality life of interventive group showed a significant decrease at the end of follow-up ( P < 0. 05) , and the net score of general health status was 10. 92,the net score of impact to social role exerted by physical function was 9. 59,and the net score of social function was 4.61. Moreover, there was statistical difference between the intervention group and the control group for their quality of life(P <0. 05) , which showed in detail that each dimension of quality of life of the intervention group had higher score than that of the control group, after adjusting baseline difference by analysis of covariance. Conclusions All these results suggest that the active screening, following up and health education, conducted by the primary health care staff of township hospitals, under the idea of health management, can improve the quality of life of hypertension patients effectively in the rural area of underdeveloped region.

Objective To study the effect of GnRH on the secretion of 5-HT in the stomach. Methods The GnRH-A Alarelin was directly injected into the stomach of rats to observe the change of density of 5-HT immunoreactive positive cell in the stomach and small intestine by immunohistochemical SABC method and 5-HT level in the circulating blood by HPLC-ECD, Results Compared with the control group,which was injected with saline into the stomach,the density of immunoreactive positive cell was significantly increased in the stomach and small intestine in the GnRH-A treatment group;while 5-HT level in the circulating blood was significantly reduced in the experimental group.Conclusion GnRH can inhibit the releasing of 5-HT but not change its synthesis.

【Objective】To observe the hemorrheological changes in lacunar cerebral infarction(LCI) patients with arteriopathy of middle and small arteries.【Methods】The hemorrheological changes of cerebral arteries in 85 LCI patients without arteriopathy of large artery confirmed by cervical vessels color ultrasonography and magnetic resonance image(MRI)were observed by transcranial Doppler ultrasonography(TCD).The correlation of the hemorrheological changes with age and blood pressure(BP) of arteries was investigated.The above indexes were compared with those in 25 healthy volunteers confirmed by encephalography in the same age group.【Results】The mean blood flow rates of cerebral middle,anterior and posterior artery in LCI patients were(62.09?16.90)cm?s~(-1),(50.42?13.11)(cm?s~(-1),)and(32.33?7.55)cm?s~(-1) respectively,lower than(69.65?19.20)cm?s~(-1),(57.75?16.75)cm?s~(-1),and(38.75?8.81)cm?s~(1) respectively in the healthy volunteers(P0.05).【Conclusion】The arteriopathy of small artery in LCI patients can cause the mild decrease of blood flow rate and the increase of pulsating index.There exists a correlation of pulsating index with age and arterial blood pressure.

Objective To explore the clinical value of laparoscopy combined with choledochoscopy in repeat surgery for hepatolithiasis. Methods The clinical data on 86 patients who had undergone repeat surgery for hepatolithiasis during January 2010 to December 2015 were retrospectively analyzed. 36 patients received laparoscopy combined with choledochoscopy(laparoscopy group),while 50 patients received laparotomy(laparotomy group). Surgical duration,intraoperative blood loss,intraoperative transfusion,stone clearance rates,length of postopera-tive hospital stay,and rate of complications were observed and analyzed. Results There were no significant differ-ences in surgical duration,intraoperative blood loss,intraoperative transfusion,stone clearance rates,and rate of complications between the two groups(P>0.05). Length of postoperative hospital stay was significantly shorter in the laparoscopy group than in the laparotomy group(P < 0.05). There was no significant difference in recurrence rates of stone and cholangitis within the follow-up period(P>0.05). Conclusions Use of laparoscopy combined with choledochoscopy in repeat surgery for hepatolithiasis is safe and feasible and has a satisfactory efficacy.

OBJECTIVE:To study the mechanism of histone deacetylase inhibitor RGFP109 in reversing resistance of glioma U251 cells. METHODS:TR/U251 cells resistance to temozolomide(TMZ)was extrablished. The test was divided into normal con-trol group,TMZ group(40 μmol/L)and TMZ(40 μmol/L)+RGFP109(0-120 μmol/L)different concentrations groups. After 24 h of adding into related medicines,CCK-8 was used to detect the cell survival rate and calculate the half inhibitory concentration (IC50). TUNEL and Annexin V/PI were used to detect the cell apoptosis in normal control group,TMZ group and TMZ+RGFP109 (42μmol/L)group. Immunoblotting was used to detect the O6-methyl guanine-DNA methyltransferase(MGMT),Survivin,B lym-phoma 2(Bcl-2),B lymphoma xL(Bcl-xL)protein expression;and gel migration test was used to detect the p65 acetylation level and its binding capacity with κB-DNA. RESULTS:Compared with normal control group,cell survival rate in TMZ+RGFP109 dif-ferent concentrations groups was obviously decreased (P<0.05),showing a concentration-dependent manner. When the RGFP109 concentration was 42 μmol/L,the sensitivity of TMZ to TR/U251 cells was the same with U251 cells. Compared with normal con-trol group,MGMT,Survivin,Bcl-2,Bcl-xL protein expressions in cells of TMZ groups were enhanced(P<0.01);p65 acetyla-tion level had no obvious changes,while the binding capacity of p65 and κB-DNA was strengthened (P<0.01). Compared with TMZ group,MGMT,Survivin,Bcl-2,Bcl-xL protein expressions in cells of TMZ groups were weakened(P<0.01);p65 acetyla-tion level was enhanced (P<0.01);and the binding capacity of p65 and κB-DNA was weakened (P<0.01). CONCLUSIONS:RGFP109 can reverse the resistance of U251 cells to TMZ by down-regulating the anti-apoptotic protein expressions adjusted by transcription factorκB(NF-κB)and weakening the binding of p65 andκB-DNA.