BACKGROUND:Pancreas or islet cel transplantation and stem cel transplantation bring hope to cure diabetes, but pancreas or islet transplantation appears to have a lack of donors as wel as immune rejection problems, limiting their clinical development. Therefore, stem cel transplantation therapy has become the current hotspot.
OBJECTIVE:To study the therapeutic effects of huaman telomerase reverse transcriptase (hTERT)-modified bone marrow mesenchymal stem cel s transplantation on diabetes mel itus in SD rats.
METHODS:Bone marrow mesenchymal stem cel s were transfected with PLXSN carrying hTERT. Thirty-six male SD rats were randomly divided into control group (n=6), stem cel group (n=10), hTERT transfection group (n=10), diabetes mel itus group (n=10). Except the control group, the rats were injected with stretozotocin (45 mg/kg) to make diabetes mel itus models. After modeling, rats in the stem cel group and hTERT transfection group were respectively intravenously injected with 1 mL of bone marrow mesenchymal stem cel s (1.5×1010/L) and 1 mL of hTERT-modified bone marrow mesenchymal stem cel s (1.5×1010/L).
RESULTS AND CONCLUSION:At 24 hours after modeling, the fasting blood-glucose level was significantly increased in the diabetes mel itus group, which was higher than the normal value (6.7 mmol/L). At 15 days after cel transplantation, the fasting blood-glucose levels were signficiantly decreased in the stem cel group and hTERT transfection group as compared with the diabetes mel itus group (P<0.05), but the body mass of rats was increased in these two group (P<0.05), especial y in the hTERT transfection group. At 45 days after cel transplantation, the fasting blood-glucose level and body mass in the stem cel group and hTERT transfection group were close to those in the control group (P>0.05), and moreover, the hTERT group had better outcomes than the stem cel group. Meanwhile, in the diabetes mel itus group, the fasting blood-glucose level was stil at a higher level, and the body mass decreased continously. These findings suggest that hTERT-modified bone marrow mesenchymal stem cel transplantation is effective for treatment of diabetes mel itus in rats.

BACKGROUND:Studies have reported that underin vitro experimental environment, antisense endothelin nucleic acid nanometer carrier can express target nucleic acid and produce RNA interference effect after enfolding by 12-alkylated chitosan nanoparticles, which can effectively inhibit the excessive generation of endothelin from inflammatory cytokines induced by alergen. OBJECTIVE:To investigate the effect of 12-alkylated chitosan nanoparticles enfolding antisense endothelin converting enzyme RNA expression plasmid on airway hyperresponsiveness in asthmatic mouse models. METHODS: Forty Balb/c mice were randomly divided into four groups: control, chitosan nanoparticles, normal saline and plasmid groups. Mice in the chitosan nanoparticles, normal saline and plasmid groups were subjected to sensitization by an intraperitoneal injection with ovalbumin (0, 14 days) and motivation by aerosol inhalation of ovalbumin (24, 25, 26 days) to induce asthma models. Mice in the control group were subjected to sensitization and motivation by the perfusion of normal saline. At 24hours before the first excitation, mice in the control, chitosan nanoparticles, normal saline and plasmid groups were perfused with normal salinevia airway, 12-alkylated chitosan nanoparticles, normal saline and antisense endothelin converting enzyme RNA. At 48 hours after the last excitation, the airway reactivity of mice was detected. After 28 days, bronchoalveolar lavage fluid cytology, lung histopathology, cytokines in spleen cel culture supernatant were detected. RESULTS AND CONCLUSION:Compared with the control group, the total number of plasmid cels, the percentage of eosinophils, eosinophil absolute counts, interleukin-4 levels, endothelin levels and airway hyperresponsiveness of mice in chitosan nanoparticles, normal saline and plasmid groups were increased (P < 0.05), and the lung inflammation was more severe. These indicators in the chitosan nanoparticles group were al lower than those in the normal saline and plasmid groups (P < 0.05) and the degree of inflammation was lighter than that in the saline and plasmid groups. These results demonstrate that 12-alkylated chitosan nanoparticles enfolding antisense endothelin converting enzyme RNA expression plasmid can reduce the synthetic amount of asthma endothelin and inhibit airway responsiveness.

Primary liver cancer ( PLC) is one of the most invasive malignant tumors in the clinics .The PLC within Milan criteria can be cured by liver transplantation or liver resection .However,PLC exceeding Milan criteria has been a question for us to overcome all the time .In recent years ,transcatheter arterial chemoemboliza-tion( TACE) and its combination therapy for PLC exceeding Milan criteria have made some breakthrough .A great deal of literatures have confirmed that TACE and its combined therapy for PLC exceeding Milan criteria can im -prove the survival rate obviously,it also contains many advantages,such as low cost,safe,painless,minimally in-vasive,repetitive operation and so on .The progress of TACE for PLC exceeding Milan criteria in recent years is summarized in this paper .

Bidding invitation and procurement of medical equipment is one of the most important works in hospital.It can increase the working efficiency to hold the key taches of medical equipment procurement from 4 aspects including the science of decison-making,the comfirmability of bidding invitation,the right choice of the way of bidding,etc.So some important taches of medical equipment procurement are analyzed and discussed and some points for attention are raised.[Chinese Medical Equipment Journal,2008,29(2):76-77]

Parkinson disease (PD) is a common neurodegenerative disease,of which clinical symptoms give priority to movement disorders,accompanied by a series of non-motor symptoms,such as pain.Studies suggest that 40％ to 85％ of PD patients combined with pain,of more nature is related to muscleskeletal and dystonia.PD combined with pain severely reduces the quality of life of patients.However,it is still lack of uniform clinical evaluation and effective treatment.This paper makes a brief overview about the status and research progress of the evaluation and treatment of PD combined with pain.

Objective]To study Xin'an physician Wu Cheng asthenic diseases related theory of ideas in Bujuji, in order to more comprehensively understand asthenic diseases,to broaden the thinking, enhance the clinical curative effect. [Method]From the academic source of asthenic diseases , syndrome differentiation and treatment,prescription medication,clinical academic value, make research on Wu's thought about asthenic diseases treatment. [Result]Wu Cheng combined with their own perception and experience of clinical evidence, first put forward“external damage caused by asthenic diseases”;Aiming at the asthenic diseases of the treatment,Wu Cheng creatively put forward“support solution method”, “supplementary care method”, “treatment of spleen yin”;Wu Cheng's life was exploring the asthenic diseases,the theory of asthenic diseases had good clinical academic value,not only for the development of the cause of disease theory,but also enriching the theory of health prevention.[Conclusion]Wu Cheng Bujuji rich in content and its syndrome differentiation of asthenic diseases, with much experience, as today, treatment based on the thought of clinical asthenic diseases treatment still has important guiding significance.

Objective To investigate the significance of serum cortisol and high‐sensitivity C‐reactive protein (hs‐CRP) test in elderly patients with neurasthenia .Methods A total of 160 elderly patients with neurasthenia in our hospital from January 2012 to June 2015 were selected as the research subjects (observation group) and 160 individuals undergoing the physical examination as the control group .The differences of serum BDNF ,CORT and hs‐CRP levels were compared between the two groups .The patients were divided into the obvious anxiety group and anxiety group according to the Hamilton Anxiety Scale (HAMD) .The differences of serum BDNF ,CORT and hs‐CRP levels were compared between these two groups ;meanwhile serum BDNF ,CORT and hs‐CRP levels after treatment in the patients with ideal curative effect were detected and the detection results were statistically compared with those before treatment .Results The BDNF and CORT levels in the observation group were significantly lower than those in the control group ,while the hs‐CRP level was significantly higher than that in the control group ;the BDNF and CORT levels in the obvious anxiety group were significantly lower than those in the anxiety group ,while the hs‐CRP level was significantly higher than that in the anxiety group ;the treatment outcome also showed that the BDNF and CORT levels after treatment in the patients obtai‐ning the ideal effect were significantly increased compared with the pre‐treatment levels ;while the hs‐CRP level was significantly decreased .Conclusion BDNF ,CORT and hs‐CRP are significantly correlated with neurasthenia occurrence and its severity ,which deserves to pay attention to in clinical practice .

Purpose To investigate the effects of oxytocin(OT) and prostaglandins intervention on oxytocin receptor(OTR) expression of primary culture of human myometrial smooth muscle cell.Methods Using respectively oxytocin, prostaglandin E2(PGE2),and prostaglandin F2alpha(PGF2alpha) intervened on human myometrial smooth muscle cell.The expression of OTR mRNA and protein of cell hemogenate was examined.Results The expression of OTR between oxytocin intervention group and untreated group was similar.The expression of OTR in cell was significantly higher in the PGE2 or PGF2alpha intervention group than that in the untreated group.The expression of OTR in cell was significantly higher in the PGE2 and PGF2alpha joint intervention group than that in the untreated group and than that in the PGE2 or PGF2alpha individual intervention group.Conclusion Oxytocin didn′t increse the expression of OTR in human myometrial smooth muscle cell.PGE2 and PGF2alpha incresed the expression of oxytocin receptor in human myometrial smooth muscle cell.Furthermore PGE2 and PGF2alpha joint intervention more significantly increased the expression of oxytocin receptor than PGE2 or PGF2alpha individual intervention in human myometrial smooth muscle cell.

Objective To investigate the effects of gemcitabine,a cytotoxic drug,combined with photodynamic therapy (PDT) in treatment of human pancreatic cancer xenograft in nude mice.Methods The animal model of human pancreatic cancer was developed by suturing small pieces of SW1990 tumors into the dorsum of nude mice.Sixty animal models were randomly divided into five groups with 12 each:control group ( without any treatment ), photosensitizer group ( 2 mg/kg of Photosan, without illumination ),chemotherapy group (receiving 50 mg/kg of gemcitabine i.p. on day 0,3,6 and 9 after transplantation),photodynamic group (2 mg/kg photosan combined with laser irradiation) and combination group (50 mg/kg of gemcitabine and 2 mg/kg of photosan combined with laser irradiation). The tumor sizes were measured twice every week.All mice were sacrificed after 21 days.The tumor volume was calculated,and inhibitory effect and changes before and after treatment were analyzed.Results The tumor was grown bigger in control,photosensitizer and chemotherapy groups (all P value ＜0.05).On day 6,9,12,15,18and 21, the tumor size was significantly smaller in photodynamic group than those in control and photosensitize groups.While the tumor size on day 18 and 21 was smaller in combined group than those in photodynamic group(all P value ＜0.05). The tumor mass was (0.29 ± 0.20) g in combined group,which was lower than that in photodynamic,control,photosensitize and chemotherapy groups[(0.69±0.23) g,(1.65±0.21) g,(1.62±0.12) g,(1.37±0.19) g,respectively,P＜0.05].The inhibitory effect were 82.420%00 and 58.18% in combined group and photodynamic group,respectively(P＜0.05),while there was 1.80% and 17.00% in photosensitize and chemotherapy groups,respectively.Conclusions Photodynamic therapy has significant and short anti-tumor effect,but it can be significantly enhanced by combined with small dose of gemcitabine.

Objective To explore the measures in early diagnosis and treatment for venous thromboembolism(VTE)in patients with fracture.Methods All the patients with fracture visiting Beijing Jishuitan Hospital in emergency during October 2004 to October 2007 were screened by Well's prediction rules,and anticoagulation and thrombolysis were instituted for those with established diagnosis of VTE by color Doppler ultrasonography and venography.Results Totally,1 508 patients at higg-risk of VTE were identified by D-dimer test.1 455 by color ultrasonography and 53 by venography.Diagnosis of VTE was established in 652 of them(43.2%),619(94.9%)received anticoagulant treatment,162(24.8%)received anticoagulant plus thrombolytie treatment and 25 (3.8%) received anticoagulation plus thrombectomy.In order to prevent fatal pulmonary embolism,vena cava filters(VCFs)were implanted in 146(22.4%)patients,and 33(5.1%)of them were contraindicated to anticoagulation.After treatment,412 cases were cured and 240 were improved,with no one failed.Conclusions Patients with fracture are at high-risk of VTE and should be screened by D-dimer test and color Doppler ultrasonography based on Well's evaluation,as well as by venography for confirming the diagnosis of VTF as appropriate.Anticoagulation and thrombolysis are still the treatment of choice,with thrombectomy and VCF implantation performed only if necessary.