Objectives:To study the soft tissue profile characteristic in the early permanent dentition with Class Ⅲ malocclusion, and then to analyze the relationship between hard and soft tissue. Methods: 50 normal occlusion and 50 Class Ⅲ malocclusion children were examined cephalometrially with the lip at rest. Results:Compared with the normal occlusion group, All measurement except 9 soft tissue variables and 1 hard tissue variables was statistically significant with t-test in the Class Ⅲ malocclusion group (P

Objective To obtain the normal value of blink reflex(BR) in the elderly. Methods With clinical electrophysiological diagnostic technique, the orbital nerve was stimulated with electric current to elicit blink reflex in an elderly group (30 subjects, 60 sides) and an adult group (29 subjects, 58 sides). Results For the early response R 1 of BR in the elderly, the latency and amplitude were (10 28?0 39) ms,162 88 ?V. For the late response R 2 and R 2',the latency was (32 86?2 81) ms and (33 33?2 90) ms respectively; the amplitude was 210 72 ?V and 156 32 ?V respectively The difference of the latency between the elderly and adult was statistically significant. Conclusions This study indicates that BR measurement is a simple and harmless technique. The latency of BR was prolonged in the aged.

The suppressive effects of T. reglii on mouse cellular and humoral immune responses were studied. Lymphocyte proliferation effect induced with ConA,and PFC and OHS reactions with TD Ag(TNP-SRBC)were effectively suppressed by the drug. But the similar effects on LPS and TI Ag (TNP-SRBC) have not been found. The results shown that target cells of T. reglii effects may be T lymphocytes and the drug may not have a direct effect on B cells. The drug also shown a suppressive effect on IL-2 production by mouse spleen cells. The phenomenon suggests that the suppressive effects of T. reglii on humoral immune response may be indirectly mediated through suppressing helper T cells.

Animals ; Bone Neoplasms ; pathology ; Cell Adhesion ; Cell Culture Techniques ; methods ; Coculture Techniques ; Drug Screening Assays, Antitumor ; methods ; Humans ; Neoplasm Invasiveness ; Tumor Cells, Cultured

Objective To explore the relationship of plasma level of B-type natriuretic peptide (BNP) with cardiovascular risk,the severity of coronary heart disease(CHD),and the short-term prognosis in patients with type 2 diabetes. Methods 154 patients with type 2 diabetes,of them 95 cases complicated with CHD and 65 with hyper-tension were selected in this study. The CHD patients were diveded into 3 groups: AMI(n=32), UAP(n=33) and SAP(n=30). The relationship of the plasma BNP levels with cardiovascular risks, with each coronary heart disea-ses,were observed. The patients were followed up for 6 months to study the predicting role of BNP on the death in pa-tients accompanied with CHD. Results The plasma BNP level was (397.34±217.79) ng/L, which was correlated with age, CRP, hypertension and CHD (r=0.631,0.672, 0.762,0.857, P<0.05 for each);the plasma BNP levels increased with age(r=0.896,P<0.01):(57.6±12.3) ng/L in patients <50 years old,(146.2±53.4)ng/L in patients 50≤and < 59 years old, (388.4±67.5) ng/in patients 60≤and < 69 years old, and (423.8±132.6) ng/L in patients≥70 years old (P<0.01 or P<0.05). The plasma BNP levels, was higher in patients with hyper-tension than that in patients without hypertension [(314.7±125.3) ng/L vs (136.8±98.7) ng/L, P<0.01];Higher in patients with CHD than that in patients without CHD [(425.03±200.80)ng/L vs (37.64±21.57) ng/L,P<0.01)]. The short-term prognosis of patients with CHD was correlated with the levels of BNP, and BNP levels≥485 ng/L may be an independent predicting factor for cardiac death within one month. Conclusions Plas-ma levels of BNP were associated with some cardiovascular risks,which may be one of biomarkers for cardiovascular risks in patient complicated with CHD.

The mechanisms of general anesthesia, which was introduced about 170 years ago, remain poorly under- stood. Even less well understood are the effects of general anesthesia on the human body. Recently we identified 18 G-protein coupled receptor (GPCR) genes of Daphnia pulex, an invertebrate model organism. Phylogenetic analysis identified these genes to be the homologs of the human γ-aminobutyric acid, type B (GABAB) receptor, metabotropic glutamate receptors (mGluR), adrenergic receptor, serotonin (5-HT) receptor, dopamine receptor and muscarinic acetylcholine receptor (mAChR). Using reverse transcription and quantitative PCR techniques, we systematically measured the effects of propofol, etomidate and ethanol on these 18 GPCR mRNA expressions in Daphnia pulex.
Animals ; Daphnia ; drug effects ; metabolism ; Ethanol ; pharmacology ; Etomidate ; pharmacology ; Phylogeny ; Propofol ; pharmacology ; RNA, Messenger ; genetics ; metabolism ; Receptors, GABA-B ; genetics ; metabolism

Objective To investigate the physicochemical properties,structural characters and antitumor activity of a polysaccharide PTPS-1 from Paecilomyces tenuipes.Methods PTPS-1 was obtained by DEAE-cellulose and Sephadex G-100 chromatography column.The methods of HPLC,GC,IR,and NMR were used to investigate the molecular weight,monosaccharide composition,and structural characters of PTPS-1.The CCK-8 kit was used to determine the proliferation of PTPS-1 on murine splenocyte and the supernatant of the murine macrophage with PTPS-1-stimulated on Sp2/0 cells.Results PTPS-1,whose molecular weight was 1.84?104 and purity was 98.977%,contained mannose(Man) and galactogen(Gal) as monosaccharide constitute in molar ratio of 1.3∶1.It consisted of a backbone of ?-(1→6),?-(1→2),and ?-(1→3) linkage,whose branches were made by Gal-(1→3) linkage.PTPS-1 significantly stimulated the murine splenocyte proliferation and the supernatant of macrophage inhibited the growth of Sp2/0 cells in vitro.Conclusion PTPS-1 is a polysaccharide from P.tenuipes with immunomodulatory and antitumor activity.

Objective To investigate the influence of low calcium dialysate (DCa1.25) and midodrine hydrochloric (MHC) on blood pressure in hemodialysis patients. Methods Dialysate calcium concentration was changed from 1.5% (DCa1.5) to 1.25% in patients with hypercalcaemia pre- or post-dialysis.For patients with intradialytic hypotension(IDH), pre-dialysis antihypertensive drugs were ceased.If that didn′t work, MHC 2.5 or 5 mg was administered to them 30 minutes before dialysis were ceased.MHC was also administered to patients who had not taken antihypertensive drugs. The blood pressure (BP) and blood volume were recorded during dialysis. UCG and autonomic nerves function test including BP supine and standing test and sustained hand-grip test were measured as well. Results Twenty-one hemodialysis patients were involved in this study including male 9 and female 12. The average age was (54.4?14.2) years old,the time on dialysis (33.04?30.1) months. When DCa1.5 was changed to DCa1.25, 9 cases (42.9%) could maintain stable BP, but IDH occurred in 10 patients(47.6%) with symptoms such as swirl,sweat or cramp, one with lower extremities cramp and one with heart discomfort but without IDH. Patients with IDH had higher proportion of abnormal BP supine and standing tests compared with patients without IDH(50% vs. 0%, P

AIM To study the effect of neferine on intracellular adriamycin(ADM) accumulation in MCF-7/Adr cell line. METHODS The cytotoxic effect was determined by MTT assay. The intracellular ADM concentration was assayed by HPLC. RESULTS Neferine(Nef) decreased the IC 50 of ADM to MCF-7/Adr cells but increased the intracellular concentration of ADM. CONCLUSION The mechanism of the MDR reversal effect of Nef is associated with the increase of the intracellular accumulation of anticancer drug.

Objective To investigate the relationship between Kashin-Beck Disease(KBD) and Human Parvovirus B19(HPVB19).Methods HPVB19DNA was detected in 55 sera of KBD patients and 52 healthy in adjacent non-endemic area and 35 healthy sera in normal area using PCR and then linked the HPVB19DNA to pGEM-T vector.The nucleotide sequence was analyzed and compared with HPVB19 nucleotide sequence published by Genebank and another in Journal of virology.Results HPVB19DNA was found in 16 of 55 sera in KBD patients,and the HPVB19DNA position rate(29.09%) is significantly higher than that of the two healthy control groups(11.54%、11.42% respectively)(P＜0.05).The nucleotide sequence homologies compared with the two published nucleotide sequence were 97.75%、97%,respectively.The putative amino acid homologies compared with the tow published were 93.5%.The amino acid variation was greater than the nucleotide sequence variation because of a base insertion.Conclusion There was a close relationship between HPVB19 infection and Kashin-Beck Disease.