In order to study the effect of pulse Nd:YAG laser on hypersensitive dentin and inner wall of root canal.The morphologi- cal changes were observed with a SEM.The results showed that the low power with high energy density.Laser irradiation did not do harm to normal teeth tissue.The melted layer of dentin matrix extended to dentinal tubles,and the dentinal tubles were sealed to a depth of 15 um.The conventional preparation of root canal with laser irradiation provided much advantage in clearing the stained layer of inner wall in comparison with conwentional preparation of root canal alone.

Aim Subcortical ischemic vascular demen-tia ( SIVD ) induced by chronic hypoperfusion due to small-artery disease is a common cause of vascular de-mentia ( VaD) , which is recognized as the second most prevalent type of dementia. The aim of this study was to determine whether carnosine played a protective role in cognitive impairment induced by permanent occlu-sion of the right unilateral common carotid arteries ( rUCCAO ) in SIVD. Methods Adult male mice ( C57BL/6 strain ) were subjected to rUCCAO, and treated with carnosine or saline. Locomotor test, open field test, hot plate test, freezing test and Morris water maze were performed after rUCCAO. Results There were no differences among rUCCAO group, carnosine group and sham group for total distance traveled in lo-comotor test. In the open field test, carnosine (200, 500 mg · kg-1 ) significantly revised the decrease of latency spent in the center induced by SIVD . There were no differences between rUCCAO and sham groups for the pain threshold. In freezing test, rUCCAO in-duced a significant reduction in content memory, which was completely reversed by treatment of carnosine. In Morris water maze training trials, rUCCAO-treated mice showed prolonged escape latency in acquisition phase, carnosine ( 200, 500 mg · kg-1 ) markedly shortened the escape latency. Conclusion These data suggest that carnosine has a neuroprotective effect on cognitive impairment induced by rUCCAO in mice.

Adolescent ; Age Factors ; Anti-Anxiety Agents ; administration & dosage ; adverse effects ; therapeutic use ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Infusions, Intravenous ; Male ; Midazolam ; administration & dosage ; adverse effects ; therapeutic use ; Status Epilepticus ; drug therapy ; Treatment Outcome

Objective: To compare the effects of needle pricking therapy plus rotating-pulling manipulation and rotating-pulling manipulation on blood velocity,angiokinesis,and blood viscosity in patients with vertebral artery type of cervical spondylosis(CSA),and discuss its mechanisms.Methods: 216 patients were randomly divided into 2 groups according to numeric representation,108cases in the treatment group were treated by needle pricking therapy plus rotating pulling manipulation,and 108 cases in the control group were treated by rotating pulling manipulation.The peak systolic blood velocity(Vpeak),end diastolic blood velocity(Vmin),pulsatile index(PI)and resistant index(RI)of the bilateral vertebral arteries(VA)and basilar arteries(BA)were examined by transcranial doppler sonography(TCD).The values of whole blood apparent viscosity and plasma viscosity of both groups were recorded.The indexes before and after treatment of both groups were compared.Results: The therapeutic effects of the above-mentioned indexes of the treatment group were significantly superior to those of the control group(P<0.05).In comparison with pre-treatment,the whole blood apparent viscosity(high,medium and low shear rates)and plasma viscosity of the treatment group post-treatment were obviously reduced(P<0.01,P<0.05).Conclusion: Needle pricking therapy combined with pulling-rotating manipulation can significantly improve VATCS patients' clinical symptoms,which may be closely related to its effects in lowering vascular blood resistance and blood viscosity and increasing cerebral blood supply.

Objective To explore the effects of donor dendritic cells(DC)treated with Ad-IL- 12p35siRNA on the survival of allogragft recipients.Methods The recombinant adenoviral vectors carrying IL-12p35siRNA and HKsiRNA were transfected into bone marrow derived DC of BALB/C murine.C57BL/6 recipients were infused with DG(Ad-IL-12p35siRNA DC,Ad-HKsiRNA DC and control DC)from BALB/C donors 7 days before cardiac allograft,the survival time of murine and the change of T_H 1 and T_H2(IL-2,IL-4,IL-10 and IFN-?)cytokine were observed.Results The survival time of p35 group(20.17?2.71)days was longer than that of control group(7.81?1.61)days and HK group(7.17?1.60)days.The concentration of IL-2 and IFN-?in p35 group were significantly lower than those of control group and HK group,otherwise were the concentration of IL-4 and IL-10. Conclusion Pretreatment of dondor dendritic ceils with Ad-IL-12p35siRNA could prolonged cardiac allograft survival in recipicents.

A rapid, sensitive and convenient LC-MS/MS method was developed for the determination of γ-aminobutyric acid (GABA) in human plasma. d2-γ-Aminobutyric acid (d2-GABA) was synthesized as internal standard (IS). After extraction from human plasma by protein precipitation with acetonitrile, all analytes were separated on a Luna HILIC column (100 mm x 3.0 mm, 3 μm) using an isocratic mobile phase of water: acetonitrile: formic acid (20 : 80 : 0.12) with a flow rate of 0.5 mL x min(-1). Acquisition of mass spectrometric data was performed in multiple reaction monitoring mode (MRM) in positive electrospray ionization using the transitions of m/z 104 --> 69 for GABA and m/z 106 --> 71 for d2-GABA. The method was linear in the concentration range of 5.00 to 1 000 ng x mL(-1). The intra- and inter-day precisions were within 9.9%, and accuracy ranged from 99.1% to 104%, within the acceptable limit across all concentrations. The method was successfully applied to a pharmacokinetic study of GABA tablets in healthy Chinese volunteers.
Chromatography, Liquid ; Humans ; Tandem Mass Spectrometry ; gamma-Aminobutyric Acid ; blood

0.05). There was only 2/109 cases (5.8%) need a second course of antibiotics because of likely infection and 102/109 cases (93.5%)need not any moor antibiotics. The mean period of antibiotic treatment in group Ⅰ, group Ⅱa and group Ⅱb were (1.2?0.5) days,(4.8?0.8) days and (9.3?1.8) days,respectively.There were significant differences(all P

Objective To study the effects of cripto on migration, invasion, and liver metastasis of colorectal cancer cell. Methods After human colorectal cancer cell line SW480 was transfected by cripto small interfering RNA (siRNA), the mRNA and protein level were determined by Real-time RT-PCR and Western blot, respectively. The migration and invasion ability were evaluated by wound-healing assay and boyden chamber model, respectively. Thirty nude mice model of liver metastasis from colorectal cancer was established by splenectomy. Results The siRNA could down-regulate the level of mRNA and protein of cripto in a dose- and time-dependent manner. Suppression of cripto expression could inhibit migration and invasion ability of human colorectal cancer cell in vitro. The metastastic rate and tumor nodules were lower in transfection with cripto siRNA than in two control groups in vivo. Conclusions Cripto gene might play an important role in regulation of liver metastasis from colorectal carcinoma cell, and suppression of cripto gene by siRNA can inhibit liver metastasis of colorectal cancer.

Objective To compare the different expressions of transforming growth factor beta1 (TGFβ1) and its type one receptor(TGFβR1) between primary pancreatic cancer cell line AsPC-1 and metastatic pancreatic cancer cell line BxPC-3. Methods The mRNA expressions of TGFβ1 and TGFβR1 in AsPC-1 and BxPC-3 pancreatic carcer cell lines were quantatitived by real-time RT-PCR. The protein levels of TGFβ1 and TGFβR1 in these two cell lines were measured by Western blot assay. Results Compared with the primary pancreatic cancer cell AsPC-1, the mRNA and protein expressions of TGFβ1 and TGFβR1 were much higher in BxPC-3 pancreatic cancer cells(P<0.05). Conclusions Upregulations of TGFβ1 and TGFβR1 might be a pivotal incidence in the procedure of malignant progressing and metastasis in pancreatic cancer cells.

Adult ; Ethylene Oxide ; poisoning ; Female ; Humans ; Occupational Exposure