Atrial Fibrillation ; pathology ; Humans ; Peptidyl-Dipeptidase A

Objective To summarize imaging features of Kallmann syndrome (KS) in children and to improve diagnostic level of the disease.Methods The imaging manifestations of 13 patients with clinically proved KS were retrospectively studied.MRI of rhinencephalon and left wrist X-ray examinations were performed in all the 13 children.Ultrasound of abdomen and pelvis was implemented in the 8 of 13 patients.Results All the patients had abnormalities of olfactory system.Bilateral olfactory bulbs and tracts were absent in 9 patients.Unilateral olfactory bulbs and tracts were absent in 4 patients,in which contralateral olfactory bulbs and tracts were hypoplastic.These patients presented 2 aplastic,17 hypoplastic and 7 normal olfactory sulci.Anterior pituitary was hypoplastic in 3 patients.Bone age showed retardation in 6 of 13 patients.Bilateral testicles were small in all the 8 cases by ultrasound.Conclusions Aplastic or hypoplastic olfactory bulbs and tracts and sulci are seen in children with KS.Anterior pituitary dysplasia is present in part of patients and bone age backward happens in approximate half of the children.

Atrial Fibrillation ; surgery ; Catheter Ablation ; methods ; Humans

Objective To detect the mutation of A379,we develop a TaqMan fluorogenic probe based amplification refractory mutation system (TaqMan-ARMS) and investigate whether the A379V variant and activity of Lp-PLA2 are the risk factors for CAD.Methods According to the amplification refractory mutation system(ARMS-PCR)combined with a TaqMan fluorogenic probe,we established and evaluated the assay teehnique of TaqMan-ARMS for measuring the genotype of variant.At the same time,we tested the aetivity of Lp-PLA2 in 395 patients with coronary heartdisease and 396 controls,whose clinical information [ages,CHO,GLU,TG,HDL,LDL,Hs-CRP,Lp (a)] were collected.Date was analyzed by using Independent-samples t test,Chi-square test,One-Way ANOVA,Binary Logistic Regression.Results CAD group had significantly higher Lp-PLA2 activity than the controls(31.51 nmol · ml-1 · min-1 ＞21.31 nmol ·ml-1 · min-1,F =16.40,P ＜ 0.001).Comparing the highest quartile of Lp-PLA2 activitv to the bottom quartile,OR was 7.50 (95％ CI:2.34-24.05) after adjustment for various traditional cardiovascular risk factors,including ages,sex,CHO,TG,Hs-CRP,Lp (a) and GLU; the genotype VV of A379V was associated with higher risk of CAD (OR =2.95; 95％ CI:1.22-7.15,P ＜ 0.05).Conclusions The TaqMan-ARMS real time PCR technique is established to analyze A379V genotype.Lp-PLA2 activity is significantly higher in CAD group and is a risk factor for CAD; the genotype VV of A379V is also a risk factor for CAD.

Objective To study the effect of listening to music with headphone or background music on pain reduction of patients undergoing colonoscopy. Methods 180 patients undergoing colonoscopy were randondy selected as the headphone group,background music group and the control group.The headphone group listened to relaxed music with headphone after measurement of vital signs.The background music group listened to relaxed music played by CD after measurement of vital signs.The control group did not listen to music.Pain degree was measured by pain intensity number scale during colonoscopy.Heart rate,blood pressure,saturation of blood oxygen and appraisal to the music by the former two groups were observed.Results Pain degree of the headphone group and the background music group was lower than that of the control group(P＜0.05).Pain degree of the headphone group was lower than that of the background music group with no significant difference(P＞0.05).Heart rate of the control group after colonoscopy was faster than before colonoscopy(P＜0.05).Conclusions Relaxed music can alleviate pain of patients undergoing colonoscopy.Listening to background music is a convenient and economical method for alleviation of pain without any side effects for patients undergoing colonoscopy.

Objective To observe the effect of ischemic postconditioning on myocyte apoptosis in hyperlipemia rats with myocardial ischemic reperfusion.Methods Total forty-eight hyperlipemia SD rats were randomly divided into the sham-operation group, ischemic reperfusion group and ischemic postconditioning group with 16 rats in each group. The myocardial ischemic reperfusion model of rat was made. Rats in the ischemic reperfusion group were ligated for 40 min ischemia, and then reperfused for 240 min. Rats in the ischemic postconditioning group were treated for 40 min ischemia, reperfused for 10 s and 10 s ischemia for three cycles, and then reperfused for 240 min. Rats in the sham-operation group were opened the chest to braid for ringer without deligation. The presence of apoptotic myocytes was detected by the method of terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL). Meanwhile, the serum creatine kinase activity and myocardial infarct size were measured.Results The creatine kinase activity was 734.86±25.48 U/L in the ischemic postconditioning group and 967.64±28.16 U/L in the ischemic reperfusion group after reperfusion, all significantly higher than that (274.28±16.94 U/L) in the sham-operation group ( P<0.05), and it was significantly lower in the ischemic postconditioning group than that in the ischemic reperfusion group ( P<0.05). There was no significant difference in ratio of myocardial ischemic size and left ventricle after reperfusion between the ischemic postconditioning group and the ischemic reperfusion group. But the ratio of myocardial necrotic size and ischemic size of the ischemic postconditioning group was 24.8%±6.7% and significantly lower than that (38.2%±7.1%) of the ischemic reperfusion group ( P<0.05). No apoptotic myocardial cells were found after the reperfusion in the sham-operation group. The apoptotic rate in the ischemic postconditioning group (12.7%±2.8%) was significantly lower than that (20.9%±3.7%) in the ischemic reperfusion group ( P<0.05).Conclusion Ischemic postconditioning can relieve the ischemic reperfusion injury in hyperlipemia rats, the mechanism of which may be related with decreased myocardial apoptosis.

Objective To explore the growing development and community succession of main sarcos-aphagous insects on pig carcasses in summer indoor and outdoor environment in Shenzhen area and to estimate the postmortem interval (PMI). Methods From early May to August in 2013, in Forensic Med-ical Examination Center of Shenzhen Public Security Bureau, the main insect species and the decomposi-tion process were observed in two adult pig carcasses of simulative indoor and outdoor environment. The different decomposition stages and the community succession of insects were recorded. Results The indoor and outdoor pig carcasses showed skeleton 412.5 and 325 hours after death, respectively. The main species of flies on pig carcasses were Chrysomya megacephala, Chrysomya rufifacies and Chrysomya chani. The main species of beetles were Crecphilus maxillosus, Necrobia ruficollis, Saprinus splendens and Dermestes maculatu. The dominant species of flies in the outdoor pig carcasses obviously produced the second generations due to the effect of mass rainfall, nor in the indoor pig carcasses. Conclusion There are regular patterns on the community succession of insects on pig carcasses in summer indoor and out-door environment in Shenzhen area. The activity patterns of seven typical insects and their larva show important value for estimating PMI.

BACKGROUND:Microporous vacuum polysaccharide hemostatic microspheres are derived from degenerated potato plant starch and prepared through special processing. It is an ideal absorbable polymer styptic material with independent intelectual property rights. OBJECTIVE: To observe the degradation of microporous vacuum polysaccharide hemostatic microspheres and detect the safety indicators of body fluids by implanting microporous vacuum polysaccharide hemostatic microspheres in rats. METHODS:0.1-0.2 g microporous vacuum polysaccharide hemostatic microspheres were implanted subcutaneously on the left side of the spine in 12 rats. At the 1st, 3rd, 7th and 14th days after implantation,the degradation of microporous vacuum polysaccharide hemostatic microspheres in the tissue was observed. Another 15 rats were selected, of which 5 rats were taken as the control group and fed normally, and 10 rats were subjected to anesthesia. Two incisions were made on both sides of the spine, about 5 cm, deep into the muscular layer of 0.3 cm. The right amount of hemostatic microspheres were sprayed on the incisions and covered the entire wound, then the incisions were sutured. The 10 rats were raised normally for 14 days. The various indicators of body fluids such as appearance features, activities, excretion, feeding were detected. Finally, the rats were dissected, and the gross morphology and color changes of main organs were observed. RESULTS AND CONCLUSIONS: The microporous vacuum polysaccharide hemostatic microspheres buried in rats were completely degraded and absorbed within 7 days. After spraying the right amount of microporous vacuum polysaccharide hemostatic microspheres on the incision, the vital signs and biochemical indicators, such as blood and urine tests were all normal. The gross morphology and color of main organs such as liver, spleen, brain and kidney were not found significant anomalies. These results demonstrate that microporous vacuum polysaccharide hemostatic microspheres can be degraded into monosaccharide by amylase and can be completely degraded and absorbed within 7 days, without any side effects to tissues and organs.

Objective To investigate the association between Helicobacter pylori(H. pylori) infection and Autoimmune thyroid diseases (ATDs). Methods The literatures on the association of H. pylori with ATDs were retrieved by searching databases from the inception of each da?tabase to October 2015. Data extraction and quality assessment were completed by two authors. Meta analysis was performed using RevMan 5.3 software,calculating the odds ratio and 95%confidence interval. Results Twelve papers were included for the meta?analysis. The total sample size was 1 615,with 918 cases and 697 controls,respectively. Compared with the controls,H.pyloriinfection significantly increased the risk of auto?immune thyroid diseases development with a pooled of[OR=1.86,95%CI(1.18,2.94)]. H.Pylori?CagA infection significantly increased the risk of autoimmune thyroid diseases development with a pooled of[OR=2.66,95%CI(1.61,4.41)]. H. pylori infection is associated with Graves dis?ease[OR=3.37,95%CI(1.90?5.97)]and Hashimoto′s thyroiditis[OR=1.83,95%CI(1.22,2.76)]. The results of publication bias and sensitivi?ty analysis confirmed the reliability and stability of this meta analysis. Conclusion H. pylori infection may be associated with an increased risk of developing the autoimmune thyroid diseases.