In order to evaluate the value of magnetic resonance cholangiography (MRC) and dynamic examination of duodenal fluid in the differential diagnosis between extrahepatic biliary atresia (EHBA) and infantile hepatitis syndrome (IHS), 52 patients with infantile cholestatic jaundice were examined by MRC and duodenal fluid examination. Original interpretations were compared with clinical outcome. Calculated sensitivity of duodenal fluid examination in diagnosis of EHBA was 100%, and specificity was 91.1%. Sensitivity of MRC in the diagnosis of EHBA was 94.4% and specificity 88.24%. The sensitivity of MRC and examination of duodenal fluid combined in diagnosis of EHBA was 94.4% and specificity 97.06%. We are led to conclude that MRC and dynamic examination of duodenal fluid are useful in the differential diagnosis between IHS and EHBA and the combined use of the two techniques yield better results.

OBJECTIVE To investigate the properties of nosocomial infections among acute stroke victims,analyze the risk factors associated with these infections,and find out effective methods of care and management.METHODS Between Jan 2003 to Dec 2006,428 cases of stroke victims were studied to analyze the special properties and risk factors related to hospital infections among them.RESULTS Their nosocomial infection rate was 8.93%,repetitive infection rate was 9.41%,and the top five infected sites were the lower respiratory tract,digestive tract,urinary tract,upper respiratory tract and skin,with their respective rates as 47.66%,17.76%,15.19%,9.81%and 6.31%.The occurrence of hospital infections was associated with stroke as well as the quality of the nursing care process,invasive procedures,duration of stay in the hospital,dietary conditions,etc.CONCLUSIONS Nosocomial infection is still a high frequent complication in cerebral stroke and those related factors should be paid attention.To effectively decrease nosocomial infections related to stroke,it is necessary to improve nursing care and supervision as well as control over the quality of care.

ObjectiveTo identify the risk factors related to the mortality of severe acute pancreatitis.Methods Clinical data of 57 cases of severe acute pancreatitis in our hospital from August 1997 to February 2004 were collected and analyzed retrospectively. There were 32 males and 25 females. The median age was 51 years. Cases were divided into death group and survival group according to their outcome. The characteristics, severity and surgical therapy were analyzed. ResultsEleven patients died, the mortality was 19.3%。 Thirty cases underwent surgery, 8 died, the mortality was 26.3%.Factors which were of significant differences between the two groups by univariate analysis were age, Ranson score, APACHEⅡscore, ascites, MODS, ARDS, heart failure and renal failure. Multivariate logistic regression showed that independent risk factors included age, ascites, MODS. ConclusionsIn case of severe acute pancreatitis,the independent risk factors related to mortality were age, ascites and MODS.

ABSTRACT]OBJECTIVETo study the compliance to sublingual immunotherapy(SLIT) in patients with allergic rhinitis(AR) in Guangzhou city.METHODSFrom January 2014 to May 2014, 202 patients with AR received SLIT were followed up by telephone. According to age, the patients were divided into group A(age<14 years) and group B(age≥14 years). The compliance to SLIT was analyzed and the reasons of poor compliance were investigated.RESULTSAmong 202 patients, only 93 cases(46.04%) were successfully followed up by telephone, 109 cases(53.96%) were lost to visit. Among the 93 cases of successful follow-up, the good compliance rate was 29.03%(n=27), the poor compliance rate was 70.97%(n=66). compliance to SLIT was not affected by age and gender(P>0.05). Main reasons for poor compliance included poor efficacy (48.48%), insufficient education about SLIT (16.67%), inconvenience (15.15%), and adverse reactions(10.61%).CONCLUSION In Guangzhou city, lost follow-up rate in AR patients receiving SLIT is high. Compliance to SLIT is relatively low and improvements shall be made.

Objective To investigate the effects of cold exposure with different time courses on cardiovascular function and skeletal muscle contraction in Sprague-Dawley (SD) rats.Methods The male SD rats were randomly divided into control,12-h cold,24-h cold,and 48-h cold groups.The rats in all cold group were maintained in 4 ℃ environment for indicated time and allowed free access to standard rat chow and water ad libitum.After the animal model was established,the heart,thoracic aorta,soleus,and extensor digitorum longus (EDL) were rapidly isolated from rats under anesthesia and then fixed into the respective organ perfusion system that was connected to physiological recorders and data acquisition system.Lanendorff heart persusion was used to detect some parameters of cardiac function,such as coronary flow (CF),mean left ventricular systolic pressure (mLVSP),mean left ventricular diastolic pressure (mLVDP) and maximum ascending and declining rate of left ventricular pressure (± dp/dt max) ; and then the heart was suffered from 30 min ischemia followed by 60 min reperfusion,the changes of above cardiac function indexes were recorded again.Organ bath method was employed to detect contraction response to potassium chloride (KCl) or phenylephrine (PE) and endothelium-dependent relation responses to acetylcholine (ACh) of aortic rings.The twitch tension,titanic tension,and fatigue test of soleus and EDL were examined by electrical stimulation to reflect contractive function of skeletal muscle.Results The coronary flow (CF) were significantly reduced in 24-h and 48-h cold groups compared to control group [(9.0 ± 1.7) ml/g and (9.8 ± 1.3) ml/g vs (11.6 ± 1.2) ml/g,P ＜ 0.05] ; 48-h cold exposure also showed significantly increased mLVSP (P ＜0.01) and mLVP (P ＜ 0.05) of rats.After ischemia-reperfusion,the heart re-beat time was shorter in all cold exposure groups (all P ＜ 0.01),mLVP and mLVDP were higher in 24-h and 48-h cold group than control group (all P ＜ 0.01).The contraction of aortic rings responses to 60 mmol/L KCl [(0.63 ±0.13) g and (0.79 ±0.11)g vs (1.28±0.17)g,P ＜0.01] and 1 μmol/L PE [(0.62 ±0.18)g and (0.68 ±0.13)g vs (1.25 ± 0.18)g,P ＜ 0.01] were decreased while the endothelium-dependent relaxation responses to low concentration ACh (3 × 10-8 ～ 3 × 10-7) were increased in 24-h and 48-h cold groups relative to control group (all P ＜ 0.05).The 48-h cold also reduced titanic tension of SOL and EDL in comparison with control [(4.14 ± 0.62) N/cm2 vs (5.50 ± 0.75) N/cm2,P ＜ 0.05 and (3.00 ± 0.57) N/ cm2 vs (4.70 ± 0.85) N/cm2,P ＜ 0.01].Conclusions 24 ～ 48 h cold exposure could reduce CF but enhance the tolerance of heart from rats to ischemia reperfusion injury and also decrease the contraction of aortic rings response to KCl or PE but increase the sensitive responses to ACh of aortic rings from rats.The 48-h cold could decrease the contraction of skeletal muscle elicited by electrical stimulation.

Objective To investigate the effects of fasting with different time courses on the contraction of skeletal muscle and cardiovascular function in Sprague-Dawley (SD) rats.Methods The healthy and male SD rats were randomly divided into (1) control,(2) 12 h fasting,(3) 24 h fasting,and (4) 48 h fasting groups.After animal models of fasting with different time courses were established,the heart,thoracic aorta,soleus,and extensor digitorum longus (EDL) were rapidly isolated from rats under anesthesia and then fixed into the respective organ perfusion system that was connected to physiological recorders and data acquisition system.Langendorff heart perfusion was used to detect some parameters of cardiac function,including left ventricular systolic pressure (LVSP),left ventricular end-diastolic pressure (LVEDP),and maximum ascending and declining rate of left ventricular pressure (± dP/dt max).Then,the heart was suffered from 30 min ischemia followed by 60 min reperfusion,the changes in above cardiac function parameters were recorded again.The contraction response to potassium chloride or phenylephrine and endothelium-dependent relation responses to acetylcholine (ACh) of aortic rings were measured with organ bath.The changes of twitch tension and titanic tension of soleus and EDL were examined to reflect contractive function of skeletal muscle.Results The + dP/dt max was significantly reduced in 24 h and 48 h fasting groups compared to the control (P ＜ 0.01).After ischemia-reperfusion,the heart re-beat time was significantly longer [(24.3 ± 7.0)min vs (14.0 ± 2.9)min,P ＜0.05],both mLVDP and mLVP were significantly higher in 48 h and 24 h fasting groups than control group (P ＜ 0.05),and those changes did not normalized until re-perfusion 60 min.The 48 h fasting increased significantly endothelium-dependent relaxation of aortic rings response to low concentration acetylcholine (P ＜ 0.05),but did not affect the maximum relaxation of aortic rings response to high concentration acetylcholine and contraction of aortic rings responses to potassium chloride and phenylephrine.The 48 h fasting also enhanced significantly titanic tension of soleus compared to the control [(7.01 ± 1.22) N/cm2 vs (5.5 ± 0.75) N/cm2 for48 h-Fasting vs Control,P ＜0.05].Conclusions The 24 ～48 h fasting may induce inhibition of cardiac function,while fasting 48 h can increase the sensitivity of aortic rings responses to ACh and contraction function of soleus in healthy and male rats.

[Objective] To study the aeroallergens in the patients with allergic rhinitis in Guangzhou.[Methods] Using the German screen allergens quantitative detection system to determinate serum aeroallergen specific IgE and total IgE levels of 625 cases with allergic rhinitis diagnosed in The Third Hospital of SUN Yat-sen University.The samples were stratified on two age groups:the juvenile and the adult.Difference of serum aeroallergen specific IgE of the two groups was investigated.[Results]Aeroallergen specific IgE antibody in the serum of 625 patients with allergic rhinitis were positive.Total IgE in serum was positive in 413 cases,accounting for 66.1%.The positive rate of total IgE was less than that of aeroallergen specific IgE.The positive rate of aeroallergen specific IgE in order were mite mixture (84.32%),cockroach (19.04%),cypress (15.20%),cat-dog epithelia (13.12%),tree mixture (7.20%),ragweed (5.12%),humulus lupulus (1.76%),mugwort (1.76%),mould mixture (1.44%).In the two groups,the positive rate of aeroallergen specific IgE in order were similar.There were significantly higher sensitivity and positive rate of mite mixture in the juvenile group than the adult group (P ＜ 0.01).[Conclusion] The most important aeroallergens are mite mixture,cockroach,cypress,cat-dog epithelia,which could be referenced as Guangzhou patients .The juvenile is more sensitive to mite than the adult.

Objective: To explore heart rate variability (HRV) and arrhythmia in patients with resistant hypertension.
Methods: Our work included 3 groups:Resistant hypertension (RH) group, n=39, Non-resistant hypertension (NRH) group, the hypertension could be controlled by 1-3 medications, n=42 and Control group, composed of 40 healthy subjects. The 24h ambulatory blood pressure and electrocardiogram were monitored, the time-domain of HRV and arrhythmia parameters were compared among 3 groups which including standard deviation of all normal RR intervals (SDNN), standard deviation of the average normal RR intervals for all 5-min segments (SDANN), the mean of standard deviation of all 5-minute RR intervals (SDNN Index), the root mean square of the differences between adjacent R-R intervals (rMSSD) and the percentage of adjacent R-R intervals varied by more than 50 ms (pNN50).
Results: Compared with Control group, both RH and NRH groups showed decreased time-domain HRV parameters, all P<0.05. Compared with NRH group, RH group had the lower time-domain HRV parameters, all P<0. 05, while the rMSSD was similar between 2 groups (t=-1.5048, P=0.1364). The rates of arrhythmia in both RH and NRH groups were higher than Control group. The incidences of premature atrial contraction and atrial tachycardia were higher in RH group than NRH group, P<0.05, while the premature ventricular contraction, ventricular tachycardia and A-V block were similar between 2 groups, all P>0.05.
Conclusion: RH patients had decreased HRV and increased arrhythmia, especially with the higher incidence of atrial arrhythmia.

Objective: Proto-oncogene Zbtb7A has been characterized as a molecular switch in the process of cancer initiation and development.Our goal is to obtain the POZ domain of the Zbtb7A protein and prepare its polyclonal antibodies.Methods: We optimized the coding sequence of the POZ domain according to the codon bias of E.coli and synthesized the sequence with two-step PCR,which was then introduced into the pET-26b(+) vector to express the protein.The recombinant protein was analyzed by 15% SDS-PAGE and the corresponding band was cut out from gel.The minced gel slice that contained the POZ domain protein was injected to immunize rabbits.The collected rabbit antiserum was purified using the saturated ammonium sulfate method in combination with protein G antibody purification,and the purified polyclonal antibodies was evaluated by Western blot.Results: The optimized sequence of the POZ domain was correctly obtained and successfully constructed into the pET-26b(+) vector.After induction,an expected protein band about 14 KD was detected on 15% SDS-PAGE,and highly purified polyclonal antibodies were obtained,which were specifically bound to human Zbtb7A.Conclusion: The obtained recombinant protein of the POZ domain and its polyclonal antibodies can be used for further studies of Zbtb7A.

Objective]In order to study the impact of adenoid hypertrophy(AH)with allergic rhinitis(AR)in the otitis media with effusion(OME)in children,as well as to discuss the risk factors on the inducement of OME in patients with AH.[Methods]The clinical materials were collected and analyzed from 205 children with AH who admitted for surgical treatment between 2013 and 2015, including medical history and signs,acoustic immittance measurement,allergy screen as well as blood routine,and to evaluate the situation of OME and AR in patients with AH. All the data were analyzed by SPSS 20.0.[Results]Among the 205 AH children,66 cases(32.20%)were accompanying with OME. The AH patients aged 3-5 years had the highest incidence of OME,which decreased with age(P=0.018). It is significant on the prevalence of the OME in patients with AH between the two groups with and without AR (P = 0.010). In the logistic model investigating the risk factors of inducing OME among patients with AH,the third-degree AH, Type-three and the accompanying with AR were significant. The third-degree and third-type AH children were 2.729 and 6.390-folds higher than others respectively (P = 0.047,P = 0.001). The incidence of OME appeared to be 1.212-folds higher among patients with AR(P = 0.010).[Conclusion]Mechanical obstruction and AR played a superimposed role in the inducement of OME among patients with AH,which was effected by multiple factors. We should pay attention to the“lateral respiratory”allergic diseases on eustachian tube and middle ear.