Sick sinus syndrome (SSS) is a disease of multiple arrhythmias and symptoms.It has great impact on patients in the quality of life for the symptoms of high incidence.The asynchrony of myocardial electromechanical movement caused by the SSS electrophysiological changes are focused.The ultrasound can not only observe the electrical physiological activity,but also measure the mechanical movement caused by electrophysiological delay.The research progresses of ultrasound in quantitative evaluation of myocardial function in SSS patients was reviewed in this article.

China ; Dental Auxiliaries ; organization & administration ; trends ; Humans

Objective To investigate the infiltration of dendritic cell (DC) in Vocal cord polyp, laryngeal leukopla-kia and glottic squamous cell carcinoma,and to observe laryngeal mucosal lesions of the state of the immune microenviron-ment, and to research significance of DC on the development of glottic squamous cell carcinoma. Methods The infiltration of S-100+and CD83+DC in 20 cases of Vocal cord polyp, 47 cases of laryngeal leukoplakia, 45 cases of glottic squamous cell carcinoma tumor and 20 cases of laryngeal normal mucosa were examined using immunohistochemistry. Results The num-ber of S-100+and CD83+DC were significantly higher in glottic squamous cell carcinoma, laryngeal leukoplakia and vocal cord polyp than that in laryngeal normal mucosa (P<0.05). The number of S-100+and CD83+DC were higher in laryngeal leukoplakia than that in glottic squamous cell carcinoma (P<0.05). The number of S-100+and CD83+DC in mild dysplasia and moderate dysplasia were less than that in severe atypical hyperplasia (P<0.01). In glottic squamous cell carcinoma, S-100+ and CD83+DC with poor-differentiated was significantly less than that with well-differentiated (P < 0.01). Conclu-sion Changes in the number of dendritic cell was found in vocal cord polyp, laryngeal leukoplakia and glottic squamous cell carcinoma, which indicated that there were an abnormal immune status. Changing of dendritic cell in laryngeal mucosa plays an important role in laryngeal cancer development.

AIM: To investigate the regulatory effects of nuclear factor-κB ( NF-κB) and activator protein-1 (AP-1) on the expression of ectopic trypsin and proinflammatory cytokines in influenza A virus (IAV)-induced myocardi-tis.METHODS:Male BALB/c mice of 8 weeks old ( n=40) were randomly divided into 4 groups:normal control group ( NC) , infection control group ( IC) , NF-κB inhibitor group ( NI) and AP-1 inhibitor group ( AI) .The mice in NC group and IC group were instilled intranasally with 15μL saline and 40 plaque forming units ( PFU) IAV, respectively.The mice in NI group and AI group were infected intranasally with 40 PFU IAV and injected intraperitoneally with 10 mg/kg NF-κB inhibitor pyrrolidine dithiocarbamate ( PDTC) or 2.5 mg/kg AP-1 inhibitor nordihydroguaiaretic acid ( NDGA) once daily. The mice were euthanized at day 9 after instillation, and the hearts were removed for pathological and biochemical analysis. RESULTS:IAV infection induced significant up-regulation of ectopic trypsin, and proinflammatory cytokines interleukin 6 (IL-6), IL-1βand tumor necrosis factor-α(TNF-α) in the myocardium, and triggered acute myocarditis.PDTC signifi-cantly inhibited NF-κB activation and up-regulation of ectopic trypsin and proinflammatory cytokines, and effectively sup-pressed IAV replication and myocardial inflammatory response (P<0.01).NDGA effectively inhibited AP-1 activity (P<0.01) and mildly suppressed up-regulation of proinflammatory cytokines ( P<0.05) , but had no effects on the expression of ectopic trypsin, IAV replication and the extent of myocarditis ( P>0.05) .CONCLUSION:IAV infection induces up-regulation of ectopic trypsin and proinflammatory cytokines in myocardium predominantly by the activation of NF-κB.AP-1 signaling pathway might be only partially involved in the regulation of proinflammatory cytokines.

Objective To analyze mutations of the STAT3 gene in a patient with hyper-IgE syndrome (HIES).Methods Clinical data were collected and blood samples were obtained from a 14-year-old patient with hyper-IgE syndrome (HIES) and her parents.Genomic DNA was extracted and subjected to PCR for the amplification of the entire encoding and splice sites of the STAT3 gene followed by bidirectional sequencing.Meanwhile,amplified ribosomal DNA restriction analysis was carried out.Results A heterozygous missense mutation A1843G,which caused a K615E substitution,was found in exon 19 encoding the SH2 domain of the STAT3 gene in the patient,but not in either of her parents.The result of amplified ribosomal DNA restriction analysis was consistent with the findings mentioned above.Conclusion The novel K615E missense mutation in the STAT3 gene may contribute to the development of HIES.

Objective To explore the associated factors and clinical significance of acute renal injures in cerebral stroke.Methods The renal function,BUN,CR,UA patients with acute stroke in 7 days were estimated their neurologic impairment by the scardinanvian stroke scare(SSS) were assessed at the same time,then were compared with control group.Results The incidence of acute renal injure of intracerebral hemorrhage(ICH) group and cerebral infarction(CI) group were both higher than that of control group(P

Cyclophosphamide (CPA) is the most common alkylating antineoplastic agent, as well as a strong immunosuppressant that is frequently applied to autoimmune diseases and organ transplantation. It is metabolized by cytochrome P450 oxidases (CYPs) to its active metabolite which played a critical role in therapy. CPA has serious and even fatal side effects, and its efficacy and adverse reactions are significantly varied among individuals. In this review, the association of the genetic polymorphisms in the metabolic enzymes and transporters involved in the disposition of CPA with the efficacy and adverse effects of CPA were summarized, thereby providing fundamental reference for further pharmacogenomic study of CPA.
Antineoplastic Agents, Alkylating ; pharmacology ; Cyclophosphamide ; pharmacology ; Humans ; NADPH-Ferrihemoprotein Reductase ; metabolism ; Pharmacogenetics

Objective To detect the levels of cytokines in first-episode depressant patients and the influence on the levels of cytokines after the treatment with sertraline and venlafaxin. Methods The levels of IL-2,IL-6,TNF-α and IL-10 were measured in 80 first-episode depressant patients and 40 healthy control subjects. 80first-episode depressant patients were divided into two groups which were treated by sertraline and venlafaxin respectively. The levels of the same items were measured after 6-week treatment with sertraline and venlafaxin. All data were statistically analyzed by SPSS. Results The levels of IL-2,IL-6,TNF-α in 80 first-episode depressant patients were significantly higher than that in control group( IL-2:(6.79 ± 2.89 )pg/ml vs (4.06 ± 2.05 )pg/ml;IL-6:(10.12 ±4.52)pg/ml vs (6.04 ± 1.79) pg/ml;TNF-α: ( 14.81 ±4.38) pg/ml vs ( 10.69±2.54) pg/ml)(P＜0.05). The level of IL-6 after treatment by sertraline and venlafaxin was lower than that before treatment.There were no significant difference of the levels of IL-2,TNF-α, IL-10 before and after treatment. No significant difference of the levels of cytokines were observed between the two groups which were treated by sertraline and venlafaxin. Conclusions There are some changes of the levels of cytokines in first-episode depressant patients, which might be corrected by the treatment with sertraline and venlafaxin. Sertraline and venlafaxin might have the same mechanisms to cytokines.

Objective To investigate the clinical efficacy of fractionated ultrapulse carbon dioxide laser combined with microneedle for depressed acne scars.Methods Totally 86 patients with depressed acne scar were randomly divided into 2 groups:the treatment group received fractionated ultrapulse carbon dioxide laser combined with microneedle technology and the control group only received fractionated ultrapulse carbon dioxide laser.The treatment interval was 1 to 3 months,and the whole course was 2-8 times.The total effective rate and the adverse reaction were analyzed in the facial acne scar.Results The surface of depressed acne scars was significantly improved.ECCA score of all patients declined obviously after treatment,the score of the treatment group declined from 61± 11 to 45± 15,and the control group declined from 57± 14 to 40± 16.There were significantly statistical differences in the results of each group (P＜0.05).More treatment times resulted in better surface improvement.The total effective rate were 81.8％ (18/22) and 100％ (24/24) in the treatment group,and 80.0％ (16/20) and 100％ (20/22) in the control group.The course was 6.8± 1.6 months in the treatment group and 20.8±4.6 months in the control group (P＜0.05) to get a similar satisfied result.There were no obvious adverse reactions except two cases of erythema and pigmentation in the treatment group and 5 cases in the control group.The former was with less adverse reactions.Conclusions Ultrapulse carbon dioxide laser combined with microneedle technique is effective for facial acne scars,with less complications and shorten treatment course.

ObjectiveTo analyze the internet-based cognitive behavior therapy (ICBT) intervent medical university students' social anxiety,and provide experiences and theoretical basis for future social anxiety interventions.Methods45 medical students of social anxiety were voluntarily divided into the one-to-one intervention group,one-to-five intervention group and control group.The control group did not intervene,one-to-one intervention group and one-to-five intervention group were interfered single person or team by cognitive behavioral therapy,respectively.The level and symptom of social anxiety of the 3 groups were assessed before and after the intervention by social phobia inventory(SPIN) and Social anxiety symptoms interview inventory.ResultsAfter the intervention,the scores of SPIN and the 3 subscales within it (fear,avoidance and physiological) of one-to-one ICBT group and one-to-five ICBT group were lower than those of the control group (SPIN scores:one-to-one ICBT group 15.60 ±7.87,one-to-five ICBT group 14.87 ± 8.83,control group 20.20 ± 11.46).Variance analysis showed that,in addition to physiological subscale(F =0.641,P ＞ 0.05 ),the scores of SPIN,fear and avoidance subscales had significant differences among the3 groups (F=3.764,P=0.018; F=3.606,P=0.021 ; F=5.444,P=0.005).In the analysis of participants'social anxiety symptoms,after treatment,in one-to-one ICBT group,there was 1 participant changed into subthreshold social anxiety and 1 participant into normal in the 2 threshold social anxiety participants.All the 3 subthreshold social anxiety participants changed into normal.In one-to-five ICBT group,there was 1 threshold social anxiety participant lapsed to subthreshold social anxiety,1 subthreshold social anxiety participants still remained in subthreshold social anxiety,2 symptomatic social anxiety participants changed into normal.But there were no significant changes in control group.ConclusionsAll the two methods of intervention have a certain effect.The effect of one-to-one intervention therapy is most significant.