2.A study on the effect of recruitment maneuver imposed on extravascular lung water in patients with acute respiratory distress syndrome.
ZY, WANG ; X, ZHU ; HL, LI ; TH, WANG ; GQ, YAO
Chinese Critical Care Medicine 2009;21(10):604-608
OBJECTIVE: To investigate the possible effects of recruitment maneuver (RM) imposing on extravascular lung water (EVLW) in patients with acute respiratory distress syndrome (ARDS). METHODS: Twenty patients with ARDS who were eligible for the study were randomized to two groups, one group of which received regular therapy+RM (RM group), and to the other group only regular therapy was given (control group). Mechanical ventilation of all the patients was performed on the principles of lung protective ventilation. RM was carried out in bi-level positive airway passage (BIPAP) mode, and repeated every 8 hours per day until on the 7th day or before weaning of mechanical ventilation. The treatment was same between the two groups except RM. Baseline data and the influencing factors of EVLW were all recorded, which included everyday EVLW, extravascular lung water index (EVLWI) after RM, respiratory mechanics, oxygenation parameters, central venous pressure (CVP), plasma colloid osmotic pressure (COP), dosage of corticosteroid and adrenergic drugs, 24-hour net fluid balance. RESULTS: EVLW and EVLWI in RM and control group showed a tendency of decrease with passage of time, but the difference between both groups had no statistical significance (all P>0.05). The comparisons between the influencing factors of the groups, consisting of CVP, COP, noradrenalin and hydrocortisone, had no significant difference either (all P>0.05). Dopamine dosage in RM group on the 4th day was smaller than that of control group (P<0.05). Net fluid balance in RM group on the 7th day was negative, whereas it was positive in control group (P<0.05). Mean airway pressure [Pmean, RM group (18.8+/-3.2) cm H(2)O (1 cm H(2)O=0.098 kPa) vs. control group (16.6+/-3.9) cm H(2)O] and lung quasi-static compliance [Cstat, RM group (36.5+/-14.5) ml/cm H(2)O vs. control group (29.3+/-12.0) ml/cm H(2)O] in RM group were higher than those in control group (both P<0.05). Cstat on the 5th day was higher than that on the 2nd and 3rd day in RM group (both P<0.05). But oxygenation index (PaO(2)/FiO(2)) showed no distinct difference between the groups (all P>0.05). CONCLUSION: RM for the patients with ARDS can merely improve lung mechanics without obvious effect on EVLW. Neither of the influencing factors involved in the study has impact on emergence and clearance of EVLW.
3.Prevalence, awareness, treatment and control of hypertension in population older than 15 years of age in Beijing, 2013-2014.
C X WANG ; X G WU ; H J LIU ; S C GUAN ; C B HOU ; H H LI ; X GU ; Z Y ZHANG ; X H FANG
Chinese Journal of Epidemiology 2018;39(2):179-183
Objective: To investigate the rates on prevalence, awareness, treatment and control of hypertension in population older than 15 years of age in Beijing, 2013-2014. Methods: A cross-sectional survey was conducted in Beijing between 2013-2014. Stratified multistage random sampling method was used to select representative sample of 13 057 Chinese individuals aged over 15 years, from the general population. Blood pressure was measured for three readings at sitting position after resting for at least five minutes with an average reading recorded. A standardized structured questionnaire was developed to collect history of hypertension and antihypertensive treatment. Results: A total of 4 663 community residents aged over 15 years were hypertensive among the 13 057 individuals, with the standardized prevalence rate as 32.7%, in Beijing area. The age-standardized prevalence rates of hypertension appeared 34.6% in men and 30.8% in women. The age-and sexstandardized prevalence of hypertension rates were 33.3% in urban and 24.6% in rural areas. The prevalence of hypertension increased with age and appeared higher in men than in women, in urban than in rural residents. Among the hypertensive patients, rates of awareness, treatment and control were 66.8%, 64.6% and 31.6%, respectively. Conclusion: High prevalence of hypertension with low rates on awareness and treatment and control, appeared in the general population of Beijing. Related strategies should be developed regarding prevention, control and management of hypertension, to reduce the burden of this disease.
Adolescent
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Adult
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Age Distribution
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Aged
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Antihypertensive Agents/therapeutic use*
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Asian People/statistics & numerical data*
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Awareness
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Blood Pressure
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Blood Pressure Determination
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China/epidemiology*
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Cross-Sectional Studies
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Female
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Health Knowledge, Attitudes, Practice
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Humans
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Hypertension/epidemiology*
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Male
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Middle Aged
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Prevalence
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Rural Population
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Sex Distribution
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Surveys and Questionnaires
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Urban Population
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Young Adult
5.Analysis of structure, function and epitopes of Spirometra erinaceieuropaei casein kinase I
Liu, L.N ; Wang, Z.Q ; Zhang, X ; Jiang, P ; Zhang, Z.F ; Zhang, G.Y ; Cui, J.
Tropical Biomedicine 2015;32(1):167-175
Spirometra erinaceieuropaei casein kinase I (SeCKI) was analyzed using
bioinformatical methods to predict its structure and function based on the deduced amino
acid sequence from full length cDNA sequence of SeCKI gene with online sites and software
programs. The longest open reading frame contains 448 amino acids, 50 kDa and theoretical
pI of 4.73, with a complete tubulin domain, a SMART tubulin_C domain and a low complexity
region. SeCKI has no signal sequence and no transmembrane domain, but is predicted to be
located extracellularly. The secondary structure of SeCKI contains 12 α-helixes, 11 β-strands
and 22 coils. SeCKI had 19 potential antigenic epitopes and 25 HLA-I restricted epitopes.
Based on phylogenetic analysis of SeCKI sequence, S. erinaceieuropaei has the closest
evolutionary status with Hymenolepis microstoma. Information from this study could provide
important insights into the identification of diagnostic antigens and molecular targets of antisparganum
drugs.
6.Analysis of Structures, Functions, and Epitopes of Aminopeptidase from Trichinella spiralis
Zhang, Y.L., , Zhang, H.W., Zhang, X., Liu, L.N., Liu, R.D., Xu, B.L., Wang, Z.Q., Cui, J.
Tropical Biomedicine 2015;32(4):776-782
We have previously reported that the recombinant T. spiralis aminopeptidase
(rTsAP) could induce a partial protective immunity against T. spiralis infection in mice. The
aim of this study was to predict the structures and functions of TsAP protein by using the full
length cDNA sequence of TsAP gene. TsAP sequence was 1515 bp length with a 1515 bp
biggest ORF encoding 504-amino acid protein. The molecular weight and isoelectric point of
TsAP were 54.7 kDa and 6.69, respectively. TsAP structure domains contained a
Peptidase_M17_N and a Peptidase_M17 domain, which has the function of catalysis of the
hydrolysis of N-terminal amino acid residues. TsAP had no signal peptide site and transmembrane
domain, and located in cytoplasm. The secondary structure of TsAP contained 16 α-helix, 14
β-strand and 29 coils. The TsAP had 11 and 21 potential antigenic epitopes of T cell and B cell,
respectively. Based on the phylogenetic analyses of TsAP, T. spiralis have the closest
relationship with Plasmodium falciparum. TsAP was a kind of proteolytic enzyme with a
variety of biological functions and its antigenic epitopes could provide important insights on
the diagnostic antigens and target molecular of anti-Trichinella drugs
7.Inducing vascular smooth muscle cell proliferation by insulin involves in phosphatidylinositol 3-kinase and ERK1/2
Chang-Qing YU ; Ye ZHANG ; Chun-Jiang FU ; X-Kai WANG ;
Chinese Journal of Pathophysiology 2000;0(11):-
AIM:To investigate the effect of insulin on vascular smooth muscle cells (VSMCs) proliferation and to evaluate the intracellular signaling pathways involved.METHODS:VSMCs separated from Sprague-Dawley rats were used in this study. The proliferation of VSMCs induced by insulin was assayed by [3H]-thymidin incorporation. The protein expression and activity of p-ERK1/2 were determined by immunblot and [?-32P]ATP incorporation.RESULTS:Insulin induced cell proliferation in a concentration-dependent manner. The proliferative effect of insulin on VSMCs was inhibited partly by LY294002 (48.8%),an inhibitor of PI-3 kinase,and the ERK1/2 inhibitor PD98059 (43.6%),respectively. Moreover,phosphorylation of ERK1/2 and activity of ERK1/2 induced by insulin were also inhibited partly by LY294002.CONCLUSION:PI-3 kinase and ERK1/2 are involved in insulin induced VSMCs proliferation.
9.Identification of early diagnostic antigens in soluble proteins of Trichinella spiralis adult worms by Western blot
Xu, D.M. ; Wen, H. ; Wang ; L.A., Hu ; C.X., Qi ; X., Sun ; G.G., Liu, R.D. ; Wang, Z.Q. ; Cui, J.
Tropical Biomedicine 2017;34(1):191-198
Previous studies showed that crude antigens from Trichinella spiralis adult worms
(AW) can be recognized by mouse infection sera at 8 days post infection. The aim of this study
was to identify the early diagnostic antigenic bands in soluble proteins from T. spiralis AW by
Western blot using early infection sera. The affecting factors of adult recovery were firstly
observed in this study, and the results showed that the maximum number of adults was
collected from small intestine when the female BALB/c mice were orally infected with 4000
ML and sacrificed at 3 days post infection. The results of Western blot analysis showed that
seven protein bands (31, 35.1, 39, 40.6, 41.9, 47 and 50.6 kDa) could be recognized by early
infection sera as early as at 8-10 days post infection, and were strongly reacted with mouse
infection sera at 11-12 days post infection. Our results suggested that the seven protein
bands of T. spiralis AW soluble proteins might be the early expressed antigens during the
intestinal stage of Trichinella infection and therefore have potential value for the early
diagnosis of trichinellosis.
10.Electroencephalogram nonlinear parameters for assessing the therapeutic efficacy in patients with acute carbon monoxide poisoning
Yin-Xu WANG ; Iao-ming X WANG ; Hui LIU ; Fang CHEN
Chinese Journal of Neuromedicine 2012;11(2):177-181
Objective To investigate the value of electroencephalogram (EEG) nonlinear parameters in assessing the therapeutic efficacy in patients with acute carbon monoxide poisoning (ACMP). Methods Twenty-one patients diagnosed with ACMP in our department from November 2010 to March 2011 and 21 healthy volunteers were enrolled in this study.The EEG nonlinear parameters were obtained fi om the patients for analysis on the day of admission, at 2 and 4 weeks post-treatment,respectively,including approximate entropy (ApEn),cross-approximate entropy (C-ApEn),correlation dimension (D2),point wise correlation dimension (PD2),mutual dimension (Dm),Lyapunov exponent (LE),Kolmogorov entropy (KE) and Complexity (Cx).The EEG nonlinear parameters of the patients were compared with those of the healthy volunteers. Results The mean values of D2, Cx,ApEn,C-ApEn and Dm were found to gradually increase with the duration of therapy, whereas the values of PD2,LE and KE had no association with the therapy.On the day of admission,the mean values of D2,Cx,ApEn, C-ApEn and Dm for ACMP patients were significantly different from those of the healthy volunteers (P<0.05),but at 2 and 4 weeks post-therapy,the mean values ofLE,PD2,D2,Dm,Cx,ApEn and C-ApEn of the ACMP patients were not significantly different from those of the healthy volunteers (P>0.05). Conclusion Since EEG nonlinear parameters (D2,DM,Cx,ApEn,C-ApEn) can objectively reflect the status of brain functional recovery in ACMP patients at an early treatment stage,they can serve as practical measures in the treatment of ACMP.