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1.
Article in Chinese | WPRIM | ID: wpr-847233

ABSTRACT

BACKGROUND: Although extracellular signal-regulated kinase 5 (ERK5) is an essential transducer of external signals for osteoblasts growth, differentiation, and survival, the effects of ERK5 signaling on bone homeostasis in vivo have not yet been described. OBJECTIVE: To elucidate whether the inhibition of ERK5 activity and its downstream targets by XMD8-92 results in osteoporosis and aggravates dexamethasone-induced osteoporosis. METHODS: In vivo experiment: A mouse model of osteoporosis was induced by dexamethasone. There were four groups: blank control group (PBS); XMD8-92 group (50 mg/kg); dexamethasone group (50 mg/kg); XMD8-92+dexamethasone group (50 mg/kg XMD8-92 plus 50 mg/kg dexamethasone). Administration was done for 5 continuous weeks. Cell experiment: There were four groups: blank control group; XMD8-92 group (5 μmol/L); dexamethasone group (10×10-6 mol/L); XMD8-92+dexamethasone group (treatment with 5 μmol/L XMD8-92 followed by 10×10-6 mol/L dexamethasone). Cells were incubated for 1 hour. In addition, ERK5 activation was induced using epidermal growth factor. ERK5 activity in mice and MC3T3-E1 cells were detected. We further detected bone mass, bone architecture and mechanical stress of the trabecular bone, measured the expression of receptor activator of nuclear factor-κB ligand/osteoprotegerin (RANKL/OPG) and observed the roles of XMD8-92 in osteoblast proliferation and apoptosis. The study protocol was approved by the Ethics Committee of the Second Hospital of Lanzhou University (No. 2016-D44). RESULTS AND CONCLUSION: XMD8-92 could block ERK5 phosphorylation, change the architecture of the trabecular bone, reduce bone mass and aggravate dexamethasone-induced osteoporosis. XMD8-92 could significantly reduce the biomechanical properties of bone tissues in mice. XMD8-92 could up-regulate RANKL/OPG rate, lower osteoblasts vitality by inhibiting Cyclin B1 and CDK1 expression, and promote osteoblast apoptosis by up-regulating the expression of FasL. The novel findings suggest that ERK5 activity plays an important role in maintenance of bone mass, and altered ERK5 activation in disease conditions such as osteoporosis or dexamethasone-induced osteoporosis should be considered as a potential mechanism for abnormal bone homeostasis.

2.
Chinese Journal of Geriatrics ; (12): 958-961, 2020.
Article in Chinese | WPRIM | ID: wpr-869488

ABSTRACT

Objective:To investigate the impact of the destruction of dorsal motor nucleus of the vagus(DMV)on lower esophageal sphincter pressure in a rat model of acute esophagitis.Methods:A total of 40 male Sprague-Dawley(SD)rats were randomly divided into four groups: the control group, sham group, DMV destruction group, DMV destruction + vagal stimulation group.Two weeks after DMV destruction or sham operation, hydrochloric acid with pepsin was perfused into the esophagogastric junction of rats for 90 min, and lower esophageal sphincter pressure was measured before and after operation and 60 min after acid perfusion.Rats in the control group received assessment of lower esophageal sphincter pressure directly.Rats in the DMV destruction + vagus stimulation group were given electric current stimulation for 30 minutes before and after 15 min of esophageal acid perfusion.Rats were sacrificed after 60 min of the acid perfusion.The esophagus was prepared for hematoxylin and eosin(HE)staining, and the degree of inflammation and the expression of inflammatory cytokines were examined.Results:In the DMV destruction group, lower esophageal sphincter pressure decreased 2 weeks after DMV destruction compared with pre-destruction levels(25.9±8.8 cmH 2O vs.34.0±8.9 cmH 2O, P<0.05), and lower esophageal sphincter pressure decreased after 60 min of acid perfusion compared with pre-destruction levels(18.6±3.6 cmH 2O vs.25.9±8.8 cmH 2O, P<0.01). In the DMV destruction + vagus stimulation group, lower esophageal sphincter pressure increased after vagus nerve stimulation(22.3±2.9 cmH 2O vs.18.6±3.6 cmH 2O, P<0.05). There was no significant difference in lower esophageal sphincter pressure in the sham group before and after sham operation, while the pressure increased after acid perfusion(30.0± 9.5 cmH 2O vs.37.8±5.8 cmH 2O, P<0.05). The degree of inflammation in the lower esophagus was aggravated and the expression of tumor necrosis factor-α, interleukin(IL)-6, IL-1β and prostaglandin E2 in esophageal tissues increased in the DMV destruction group compared with the sham group( P<0.01). The inflammation degree and the expression of inflammatory factors in the lower esophagus improved after vagal nerve stimulation compared with pre-stimulation levels( P<0.01). Conclusions:DMV destruction decreases lower esophageal sphincter pressure and aggravates esophageal inflammation and injury in a rat model of acute esophagitis.Vagus nerve stimulation can strengthen the pressure of the lower esophageal sphincter and improve the inflammation of the lower esophageal segment.

3.
Article in Chinese | WPRIM | ID: wpr-798008

ABSTRACT

Objective@#To improve the prenatal diagnosis and differential diagnosis ability for anomalous origin of one pulmonary artery branch from the aorta (AOPA) and unilateral absence of pulmonary artery (UAPA) by comparing and analyzing different types of fetal echocardiography features.@*Methods@#Fetal echocardiographic features were analyzed retrospectively in fetus with prenatal diagnosis of UAPA or AOPA between June 2012 and December 2018, and the different types of fetal echocardiography characteristics and main points of identification were summarized.@*Results@#A total of 6 fetuses with AOPA and 6 fetuses with UAPA were diagnosed.Among the 6 fetuses with AOPA, 5 cases were anomalous origin of right pulmonary artery from the aorta (AORPA), including 3 cases with isolated AORPA and 2 cases combined with Berry syndrome, and 1 case was anomalous origin of left pulmonary artery from the aorta (AOLPA) with an absent pulmonary valve. All 6 cases of AOPA had proximal form. Among the 6 fetuses with UAPA, 4 cases were isolated unilateral absence of right pulmonary artery, 1 case was isolated unilateral absence of left pulmonary artery and 1 case was unilateral absence of left pulmonary artery combined with tetralogy of Fallot (TOF). The main common characteristic sonographical findings included: there was no confluence at the bifurcation of the main pulmonary artery on multiple views, and the affected pulmonary branch was not attached to the main pulmonary artery. The different characteristic sonographical findings in fetus included: the affected pulmonary artery of AOPA arosed from the right posterior or left posterior portion of the ascending aorta on three vessels and trachea view (3VT) and long axial view of left ventricle, and 3VT and the coronary view of brachiocephalic trunk artery showed that the abnormal origin of pulmonary artery branch of UAPA connected with the root of brachiocephalic trunk artery by the ipsilateral vertical arterial duct (DA), and color Doppler flow imaging showed that the blood flow of the affected pulmonary artery branch was isolated in the pulmonary field.@*Conclusions@#AOPA and UAPA have many similarities in the characteristics of fetal echocardiography. 3VT and long axial view of left ventricle are the best views for displaying proximal AOPA, 3VT and the coronary views of the root of brachiocephalic trunk artery are the best views for displaying UAPA.

4.
Article in Chinese | WPRIM | ID: wpr-791290

ABSTRACT

Objective To improve the prenatal diagnosis and differential diagnosis ability for anomalous origin of one pulmonary artery branch from the aorta ( AOPA ) and unilateral absence of pulmonary artery ( U APA ) by comparing and analyzing different types of fetal echocardiography features . Methods Fetal echocardiographic features were analyzed retrospectively in fetus with prenatal diagnosis of U APA or AO PA between June 2012 and December 2018 ,and the different types of fetal echocardiography characteristics and main points of identification were summarized . Results A total of 6 fetuses with AOPA and 6 fetuses with U APA were diagnosed .Among the 6 fetuses with AOPA ,5 cases were anomalous origin of right pulmonary artery from the aorta ( AORPA ) ,including 3 cases with isolated AORPA and 2 cases combined with Berry syndrome ,and 1 case was anomalous origin of left pulmonary artery from the aorta ( AOLPA ) with an absent pulmonary valve . All 6 cases of AOPA had proximal form . Among the 6 fetuses with U APA ,4 cases were isolated unilateral absence of right pulmonary artery ,1 case was isolated unilateral absence of left pulmonary artery and 1 case was unilateral absence of left pulmonary artery combined with tetralogy of Fallot ( T OF) . T he main common characteristic sonographical findings included :there was no confluence at the bifurcation of the main pulmonary artery on multiple view s ,and the affected pulmonary branch was not attached to the main pulmonary artery . T he different characteristic sonographical findings in fetus included :the affected pulmonary artery of AO PA arosed from the right posterior or left posterior portion of the ascending aorta on three vessels and trachea view ( 3V T ) and long axial view of left ventricle , and 3V T and the coronary view of brachiocephalic trunk artery showed that the abnormal origin of pulmonary artery branch of U APA connected with the root of brachiocephalic trunk artery by the ipsilateral vertical arterial duct ( DA ) ,and color Doppler flow imaging showed that the blood flow of the affected pulmonary artery branch was isolated in the pulmonary field . Conclusions AOPA and UAPA have many similarities in the characteristics of fetal echocardiography . 3V T and long axial view of left ventricle are the best view s for displaying proximal AOPA ,3VT and the coronary view s of the root of brachiocephalic trunk artery are the best view s for displaying UAPA .

5.
Article in Chinese | WPRIM | ID: wpr-754847

ABSTRACT

Objective To analyze the echocardiography features of unilateral absence of pulmonary artery ( U APA ) features and improve the prenatal diagnosis accuracy of U APA by analyzing fetal echocardiography features . Methods Fetal echocardiographic features were analyzed retrospectively in 6 cases with prenatal diagnosis of U APA between June 2012 and October 2018 . A t the same time ,ultrasonic manifestations of 3 patients whose antenatal examinations were performed in other hospitals and diagnosed as UAPA in our hospital were retrospectively analyzed . T he fetal echocardiography characteristics of UAPA were summarized . Results Among the 6 fetuses with UAPA ,4 cases were diagnosed as isolated unilateral absence of proximal right pulmonary artery ,1 was unilateral absence of proximal left pulmonary artery with tetralogy of Fallot ( T O F ) and 1 was isolated unilateral absence of proximal left pulmonary artery . Characteristic sonographical findings included : ① When other intracardiac abnormalities were absent ,the inner diameter and proportion of the heart cavity was normal . ② M ulti‐view showed that the normal confluence structure disappeared at the branch of the main pulmonary artery ,and the diameter of normal pulmonary artery branch was widened . ③On the basis of three vessels and trachea view ( 3V T ) ,moved the probe up and dow n to make a transverse scan ,two‐dimensional and color Doppler flow imaging ( CDFI ) showed a large vessel ( the brachiocephalic trunk artery ) originating from the aortic arch w hich had dual vascular features ,it means that it was difficult to distinguish the pulmonary artery branch from the aortic branch . ④ On coronal view of the large vessel ,two‐dimensional and CDFI clearly showed that the large vessel originating from the aortic arch was the brachiocephalic trunk artery ,and the pulmonary artery branch connected with the brachiocephalic trunk artery by the ipsilateral vertical arterial duct ( DA ) which originated from the root of brachiocephalic trunk artery ,but the left pulmonary artery branch connected with the ventral side of the aortic arch by the left DA in UAPA fetus with T O F . ⑤Spectrum Doppler of the anomalous vessels of the lungs confirmed that it was the pulmonary artery ,and the blood flow of the anomalous PA branch was isolated and no exact connection with the main pulmonary artery . Conclusions U APA can be accurately diagnosed prenatally by echocardiography . T he brachiocephalic trunk artery coronary view is very important for the diagnosis of this disease .Early diagnosis plays an important role in prenatal counseling and prognosis assessment .

6.
Chinese Medical Journal ; (24): 2269-2276, 2018.
Article in English | WPRIM | ID: wpr-690225

ABSTRACT

<p><b>Background</b>Nonalcoholic fatty liver disease (NAFLD) is one of the most common chronic liver diseases with a high prevalence in the general population. The association between NAFLD and cardiovascular disease has been well addressed in previous studies. However, whether NAFLD is associated with carotid artery disease in a community-based Chinese population remained unclear. The aim of this study was to investigate the association between NAFLD and carotid artery disease.</p><p><b>Methods</b>A total of 2612 participants (1091 men and 1521 women) aged 40 years and older from Jidong of Tangshan city (China) were selected for this study. NAFLD was diagnosed by abdominal ultrasonography. The presence of carotid stenosis or plaque was evaluated by carotid artery ultrasonography. Logistic regression was used to analyze the association between NAFLD and carotid artery disease.</p><p><b>Results</b>Participants with NAFLD have a higher prevalence of carotid stenosis (12.9% vs. 4.6%) and carotid plaque (21.9% vs. 15.0%) than those without NAFLD. After adjusting for age, gender, smoking status, income, physical activity, diabetes, hypertension, triglyceride, waist-hip ratio, and high-density lipoprotein, NAFLD is significantly associated with carotid stenosis (odds ratio [OR]: 2.06, 95% confidence interval [CI]: 1.45-2.91), but the association between NAFLD and carotid plaque is not statistically significant (OR: 1.10, 95% CI: 0.8-1.40).</p><p><b>Conclusion</b>A significant association between NAFLD and carotid stenosis is found in a Chinese population.</p>


Subject(s)
Adult , Carotid Artery Diseases , Carotid Intima-Media Thickness , China , Cross-Sectional Studies , Female , Humans , Male , Middle Aged , Non-alcoholic Fatty Liver Disease , Prevalence , Risk Factors
7.
Chinese Circulation Journal ; (12): 561-566, 2018.
Article in Chinese | WPRIM | ID: wpr-703896

ABSTRACT

Objectives:To investigate the clinical efficacy and influencing factors on clinical outcome of extracorporeal membrane oxygenation (ECMO) combined with percutaneous coronary intervention (PCI) on cardiac arrest patients due to acute myocardial infarction (AMI). Methods:The clinical data of 37 cardiac arrest patients post AMI who underwent ECMO combined with emergency PCI therapy strategies from January 2015 to January 2017 were retrospectively analyzed. The clinical data of the surviving group (17 cases) and the death group (20 cases) were compared and the outcome determinants were investigated. Results:37 patients were successfully treated with emergency PCI with the help of ECMO device, and the successful operation rate was 100%. The survival rate was 45.9% (17/37). There was no significant difference in gender, age and past history between the two groups (P>0.05). The proportion of right coronary artery lesion was the highest (47.06%) in the surviving group, and the percent of the left anterior descending coronary artery lesion was the highest (60.00%) in the death group. Most patients (70.0%) in the death group had three vessel lesions and around half the patients (52.9%) in the surviving group had two-vessel lesions. The time of traditional cardiopulmonary resuscitation ([31.4±5.2] min vs [54.6±25.7] min),the time from cardiac arrest to ECMO ([47.5±19.5] h vs [93.6±60.5] h) were significantly shorter, while CCU time (16.0[8.7, 32.6] d vs 4.0[2.0, 12.0] d) was significantly longer in the surviving group compared to the death group (all P<0.05). The mean arterial pressure at 24 h and 48 h after ECMO was significantly higher in the surviving group (89.6±21.9,87.9±19.4) than in the death group (71.8±19.3, 63.7±18.6) (both P<0.05). Unconditional logistic regression analysis showed that left anterior descending artery lesion (OR=0.723, 95%CI:0.516~0.947), higher lesion vessel number (OR=1.638,95%CI:1.107~1.729), longer cardiopulmonary resuscitation time (OR=0.712, 95%CI:0.436~0.973), prolonged cardiac arrest to ECMO placement time (OR=0.698, 95%CI:0.411~0.859) were risk factors of death, and the higher MBP at 48 h after ECMO (OR=0.672,95%CI:0.326~0.693) was the protective factor of death (all P<0.05) in this patient cohort. Conclusions:ECMO combined with emergency PCI is safe and can improve the success rate of rescue in patients with cardiac arrest after acute myocardial infarction.

8.
Article in Chinese | WPRIM | ID: wpr-698447

ABSTRACT

BACKGROUND: Morinda officinalis oligosaccharide is the main active ingredient of morinda officinalis extract,which can promote the angiogenesis of ischemic tissue, but the mechanism is unknown. At present, there are two ways for endothelial repair:vascular endothelial cell division or differentiation from vascular endothelial progenitor cells in the peripheral blood. Here, we attempted to explain the pro-angiogenesis mechanism of morinda officinalis oligosaccharide by exploring whether there is a correlation between morinda officinalis oligosaccharide and the biological function of vascular endothelial progenitor cells, thereby providing experimental reference for new drug development. OBJECTIVE: To observe the effect of morindae officinalis oligosaccharide on the proliferation, differentiation and paracrine of vascular endothelial progenitor cells. METHODS: Vascular endothelial progenitor cells were isolated from healthy human peripheral blood, and divided into two groups: control group (without morindae officinalis oligosaccharide) and experimental group (with 0.15 g/L morindae officinalis oligosaccharide), followed by 48 hours of in vitro culture.The proliferation of vascular endothelial progenitor cells was tested by fluorescent staining;the ratio of vascular endothelial progenitor cells expressing CD31 was detected by flow cytometry; and the levels of vascular endothelial growth factor, stromal cell-derived factor 1 and interleukin 8 were analyzed by enzyme-linked immunosorbent method. RESULTS AND CONCLUSION: The percentage of vascular endothelial cells expressing CD34, CD133 or VEGFR- 2 was (84.72±4.34)%. After 48 hours of culture by 0.15 g/L morindae officinalis oligosaccharide, the proliferation rate and the positive expression of CD31 in the experimental group were significantly higher than those in the control group (P < 0.05). The levels of vascular endothelial growth factor, stromal cell-derived factor 1 and interleukin 8 in the experimental group were also higher than those in the control group (P < 0.05). To conclude, morindae officinalis oligosaccharide can promote the proliferation and differentiation of vascular endothelial progenitor cells, and meanwhile, it can stimulate the release of vascular endothelial growth factor, stromal cell-derived factor 1 and interleukin 8 from vascular endothelial progenitor cells through the paracrine pathway. Consequently, it is a potential drug for myocardial ischemic diseases.

9.
Article in Chinese | WPRIM | ID: wpr-664881

ABSTRACT

Objective:The hydrogen sulfide (H2 S) role in pathogenesis of various diseases were wildly addressed in recent decade.The circulatory (plasma or serum) and biological fluid H2S measurement is still an enormous issues due to the technical limitation.This paper aimed to develop a novel measurement method based on fluorescence probe.Methods:Firstly,20 μL ethanol was used to dissolve 100 pmol fluorescence probe,then added in a 96-well plate.An equal volume of ethanol was also added to the blank well of the plate.The plate was placed in a dark room for about 1 h until the fluorescence probe was evenly coated in the 96-well microplate and dried.The plate was frozen at-20 ℃ for later use.Secondly,the plasma or serum sample was added with saturated ammonium sulfate buffer (pH 7.8) and then centrifuged to remove the proteins.The equal volume supernatant liquid was added to the probecoated well and the probe-uncoated well.The plate was incubated in a dark environment at 37 ℃ for 2 h.Finally,after incubation,the fluorescence density was acquired at λEx/λEm 340/445 nm in a microplate reader.The differences of the fluorescence density values between the probe-coated well and probeuncoated well were counted and H2S concentration of plasma/serum was calculated by standard curve with NaHiS.Results:The method had high sensitivity (from 0.3 to 100 μmol/L) and specificity for measuring H2S as compared with other biologically relevant reactive sulfur species and sulfur-containing amino acid.Serum H2S concentrations were assayed in 188 health volunteers using this method [(12.1 ±3.5) μmol/L,95% CI:4.6-19.8 μmol/L],and the frequency distribution showed a normal tendency(one-sample Kolmogorov-Smirnov test,P > 0.1).The serum H2S concentrations in 30 hypertension patients were decreased compared with 22 age-and gender-matched health individuals (paired-samples t test,t =9.937,P < 0.001).There were no differences of H2S concentration in serum [(19.66 ±2.32) μmol/L] or plasma [(18.67 ±2.07) μmol/L],between the samples acquired from artery [(19.34 ±0.51) μmol/L] or vein [(18.99 ±0.50) μ mol/L] of male Wistar rats (repeated measurement of ANOVA,P =0.38).One week frozen samples did not affect the detection.The values of the repeated measurement did not differ (two-way ANOVA,P > 0.05).Conclusion:The present method is easily performed with high sensitivity,specificity and repeatability for circulatory H2S.It is also quick and may apply for large samples.

10.
Article in Chinese | WPRIM | ID: wpr-617796

ABSTRACT

Objective:To investigate the extracellular signal-regulated kinase 5 (ERK5) and matrix metallo proteinase-9 (MMP-9) expres-sion levels in osteosarcoma tissues and their clinical significance. Methods:The ERK5 and MMP-9 expression levels in 71 specimens of osteosarcoma tissue and 40 specimens of normal bone tissue were detected by immunohistochemistry. The relationship between ERK5 and MMP-9 expression levels, their clinical characteristics, and prognosis of patients with osteosarcoma were analyzed. Results:The positive expression of ERK5 and MMP-9 in osteosarcoma tissues was 85.9%(61/71) and 74.65%(53/71), respectively, which were significantly higher than those in normal bone tissues at 12.5%(5/40) and 10.0%(4/40) (all P<0.05). The positive expression of ERK5 and MMP-9 was associated with Enneking stage and metastasis (all P<0.05). Kaplan-Meier analysis showed that the survival duration of patients with positive ERK5 and MMP-9 expression levels was shorter than those of the patients in the negative expression groups (all P<0.05). Univariate analysis of COX proportional hazards regression model revealed that tumor size, Enneking stage, metastasis, and positive ERK5 and MMP-9 expression levels are relevant to the overall survival of patients with osteosarcoma (all P<0.05). Multi-variate analysis of COX proportional hazards regression model confirmed that Enneking stage, metastasis, and positive ERK5 and MMP-9 expression levels can act as independent prognostic factors for osteosarcoma patients (all P<0.05). Conclusion:The ERK5 and MMP-9 expression levels are high in osteosarcoma tissues and are related to the clinical characteristics and prognosis of patients with osteo-sarcoma. Thus, ERK5 and MMP-9 expression levels may play important roles in osteosarcoma development and progression.

11.
Article in Chinese | WPRIM | ID: wpr-609633

ABSTRACT

Purpose Sustained attention dysfunction is a common symptom of patient with attention-deficit/hyperactivity disorder (ADHD).To reveal the neural mechanism of the abnormality of sustained attention of patients with ADHD,the cerebral blood flow (CBF) abnormalities in patients were studied by perfusion imaging.Materials and Methods Sixteen children with ADHD and twenty normal controls treated at the 401st Hospital of PLA from June 2013 to September 2015 underwent 3D arterial spin labeling (3D-ASL)scanning with GE 3.0T MRI scanner.The participants were performed four continuous sections of sustained attention to response task (SART) for 20 minutes in the scanner.Using SPM 8 toolkit,the local CBF values of both groups were compared in a voxel-wise manner,and their correlations with response time and target accuracy of SART were analyzed.Results When performing the SART,the patients with ADHD showed significantly inhibited trend of increasing CBF in the anterior cortex like dorsal cortex,medial prefrontal cortex,and motor area;however,they presented enhanced trend of increasing CBF in the posterior cortex such as posterior cingulate cortex and parietooccipital sulcus (P<0.01);the change of CBF in the dorsal prefrontal cortex and that in the precentral and postcentral gyrus had significant correlation with response time of SART task and targeting ratio (dorsal prefrontal cortex:r=0.745,P<0.001;r=0.591,P<0.001;r=-0.521,P<0.001.Precentral and postcentral gyrus:r=0.579,P<0.001).Conclusion Patients with ADHD show different CBF redistribution between anterior and posterior cerebral cortex in performing SART,and the abnormal CBF shows significant correlations with behavioral metrics,which reflects the mechanism of sustained attention dysfunction of patients with ADHD.

12.
Article in Chinese | WPRIM | ID: wpr-515270

ABSTRACT

BACKGROUND: Aseptic loosening occurs after long-term total hip replacement, which directly affects the service life and prospective efficacy of artificial joints. The particles produced by artificial joint wear lead to the surrounding bone dissolved, further cause loosening, among which, polyethylene particles because of acetabular liner wear stand out. OBJECTIVE: To systematically assess the acetabular liner wear, loosening and osteolysis caused by cross-linked polyethylene or conventional polyethylene after total hip arthroplasty. METHODS: A computer-based research of Medline, EMbase, CBM, CNKI, CqVip, WanFang databases before December 2015 and Cochrane (3rd issue, 2011) was performed in accordance with the retrieval strategy made by Cochrane collaboration. A manual retrieval of related bone journals and conference papers was conducted. Eleven randomized controlled trials about the wear caused by cross-linked polyethylene or conventional polyethylene after total hip arthroplasty were enrolled based on inclusion criteria, followed by a Meta-analysis using RevMan 5.0 software. RESULTS AND CONCLUSION: (1) Eleven randomized controlled trials involving 952 patients were included. (2) Meta-analysis showed that the acetabular liner wear rate of cross-linked polyethylene was significantly lower than that of conventional polyethylene at 5 years postoperatively [MD=-0.07, CI(-0.09, -0.05), I2=93%, P < 0.00001]; the large heterogeneity was decreased [MD=-0.06, 95%CI (-0.07, -0.04), I2=39%, P < 0.00001] after three research removed through sensitivity analysis. (3) The osteolysis rate in the cross-linked polyethylene group was significantly lower than that in the conventional polyethylene group [RR=0.39, 95%CI (0.27, 0.57), I2=0%, P < 0.00001]. (4) These results suggest that the cross-linked polyethylene liners exhibit reduced radiological wear and osteolysis, but the mean follow-up of 5 years (1.8 to 8.0) cannot meet the long-term requirements. Therefore, multi-central, large sample size and high-quality randomized controlled trials are needed to testify the efficacy and safety of cross-linked polyethylene.BACKGROUND: Aseptic loosening occurs after long-term total hip replacement, which directly affects the service life and prospective efficacy of artificial joints. The particles produced by artificial joint wear lead to the surrounding bone dissolved, further cause loosening, among which, polyethylene particles because of acetabular liner wear stand out. OBJECTIVE: To systematically assess the acetabular liner wear, loosening and osteolysis caused by cross-linked polyethylene or conventional polyethylene after total hip arthroplasty. METHODS: A computer-based research of Medline, EMbase, CBM, CNKI, CqVip, WanFang databases before December 2015 and Cochrane (3rd issue, 2011) was performed in accordance with the retrieval strategy made by Cochrane collaboration. A manual retrieval of related bone journals and conference papers was conducted. Eleven randomized controlled trials about the wear caused by cross-linked polyethylene or conventional polyethylene after total hip arthroplasty were enrolled based on inclusion criteria, followed by a Meta-analysis using RevMan 5.0 software. RESULTS AND CONCLUSION: (1) Eleven randomized controlled trials involving 952 patients were included. (2) Meta-analysis showed that the acetabular liner wear rate of cross-linked polyethylene was significantly lower than that of conventional polyethylene at 5 years postoperatively [MD=-0.07, CI(-0.09, -0.05), I2=93%, P < 0.00001]; the large heterogeneity was decreased [MD=-0.06, 95%CI (-0.07, -0.04), I2=39%, P < 0.00001] after three research removed through sensitivity analysis. (3) The osteolysis rate in the cross-linked polyethylene group was significantly lower than that in the conventional polyethylene group [RR=0.39, 95%CI (0.27, 0.57), I2=0%, P < 0.00001]. (4) These results suggest that the cross-linked polyethylene liners exhibit reduced radiological wear and osteolysis, but the mean follow-up of 5 years (1.8 to 8.0) cannot meet the long-term requirements. Therefore, multi-central, large sample size and high-quality randomized controlled trials are needed to testify the efficacy and safety of cross-linked polyethylene.

13.
Article in Chinese | WPRIM | ID: wpr-808536

ABSTRACT

Objective@#The estrogen level and blood calcium concentration changes were studied on menopausal women with benign paroxysmal positional vertigo (BPPV).@*Methods@#Between January 2015 and January 2016, 70 menopause women with BPPV in outpatient clinics of Department of Otorhinolaryngology, Inner Mongolia Medical University Affiliated Hospital were included in this study as research group, while 30 menopause healthy women who came to hospital for check-up were included as control group. Serum levels of estradiol (E2), follicle stimulating hormone (FSH), luteinizing hormone (LH), progesterone (PRO), testosterone (T), serum prolactin (PRL) and the calcium concentration were analysed and comparied between research group and control group. SPSS17.0 statistical software was used to analyze the data. χ2 test was used to compare the percentage of decreased serum level of sex hormone, and t test was used to compare the serum level of sex hormone and calcium concentration of two groups.@*Results@#In research group, sex hormone decreased proportion of E2 (91%) and PRO (67%) were obviously higher than those in control group (χ2 value was 8.13, 10.28, respectively, all P<0.05). The E2 and PRO in research group were significantly lower than those in control group ((33.18±31.45) pmol/L vs (64.92 ±31.52) pmol/L, (0.64±0.48) nmol/L vs (1.02±0.60) nmol/L, t value was 6.238, 8.566, respectively, all P<0.05). There was no statistically significant difference of the level of LH, PRL, T, FSH and blood calcium concentration in research group compared with control group ((29.81±13.13) U/L vs (27.21±10.19) U/L, (0.49±0.20) nmol/L vs (0.49±0.15) nmol/L, (0.56±0.42) nmol/L vs (0.73±0.62) nmol/L, (64.25±31.44) U/L vs (60.38±29.97) U/L, (2.28±0.17) mmol/L vs (2.32±0.21) mmol/L, t value was 13.427, 14.876, 7.505, 12.090, 7.532, respectively, all P>0.05).@*Conclusion@#The level of E2 and PRO decrease obviously in postmenopausal women with BPPV, which can cause the inner ear microcirculation disorder , may be one of the risk factors of BPPV.

14.
Chinese Medical Journal ; (24): 2540-2545, 2016.
Article in English | WPRIM | ID: wpr-230923

ABSTRACT

<p><b>BACKGROUND</b>Few data are available concerning intercondylar notch dimensions in female nonathletes with knee osteoarthritis (OA) in plateau region. The aim of this study was to assess the relation of intercondylar notch morphology to anterior cruciate ligament (ACL) injuries in female nonathletes with knee OA aged 41-65 years from the Chinese Loess Plateau.</p><p><b>METHODS</b>The study was conducted on 330 patients with ACL injury (aged 31-65 years; 159 males, 171 females), 141 patients with OA (aged 31-65 years; 59 males, 82 females), and 89 female healthy controls (aged 41-65 years), and this evaluation included identifying the distribution of patients with OA or ACL injury and measuring the intercondylar notch width indexes (NWIs).</p><p><b>RESULTS</b>There was a significant rising trend in patients with OA (the Kellgren and Lawrence grade = 3) with ACL injury (OA-S + ACL) aged 41-65 years, especially in females. We found that the notches of OA-S + ACL had a smaller NWI compared with control and OA without ACL injury (OA-S-only, P = 0.000, 95% confidence interval [CI] = -0.059--0.030; P = 0.000, 95% CI = -0.049--0.016). A similar trend was found in notch shape index (NSI), but not in notch depth index and the cross-sectional area. The cutoff of NWI and NSI value was 0.26, and 0.65, and area under the receiver operating characteristic curve was 0.82, and 0.79, respectively. Further study displayed a significant correlation between a reduced NWI and NSI and OA-S + ACL (P = 0.000, χ2 = 14.012; P = 0.000, χ2 = 14.286).</p><p><b>CONCLUSION</b>A narrower intercondylar notch and a plateau environment are risk factors of predisposing female nonathletes with knee OA to ACL injury aged 41-65 years.</p>


Subject(s)
Adult , Aged , Anterior Cruciate Ligament Injuries , Diagnosis , Epidemiology , Female , Humans , Magnetic Resonance Imaging , Male , Middle Aged , Osteoarthritis, Knee , Diagnosis , Epidemiology , Risk Factors
15.
Article in Chinese | WPRIM | ID: wpr-506367

ABSTRACT

Objective To improve the prenatal echocardiographic diagnostic accuracy for fetus with isolated mirror-image right aortic arch which combined with vascular ring by analyzing and accumulating its echocardiographic features.Methods Echocardiographic signs were analyzed retrospectively and fetal echocardiographic features were accumulated in 16 cases with prenatal diagnosis of isolated mirror-image right aortic arch with left-side ductus arteriosus which formed vascular ring between January 2014 and February 2016.All cases were confirmed by neonatal echocardiography.Results The fetal echocardiography characters:① In 3-vessel and trachea view,fetal right aortic arch was demonstrated a Ushaped appearance of the great vessels,the right arm of the ‘ U’ represented the aortic arch and its left branch with ductal continuation.② In 3-vessel and trachea view or upper axial mediastinal transverse view,left innominate artery passed straightly to the left of the trachea.Left innominate artery and right-side ductus arteriosus were overlapped and the distance of two vessels was very close.③ In double arch view and longitudinal view for ductus,Left innominate artery did not connect to descending aorta or ductus arteriosus and did not involve in the formation of vascular ring.④ Color Doppler played an important role in diagnosis of this disease.Power Doppler or high-definition imaging easily showed color overflow and wrongly displayed the crossed relationship of left innominate artery with descending aorta as the anatomical connection,and caused the misdiagnosis of this disease as double aortic arch.Conclusions Isolated mirrorimage right aortic arch with vascular ring is not rare in the fetal period.Because ductus arteriosus is large and patent during the prenatal period,it is easily mistaken for the crossed relationship of left innominate artery with descending aorta as the anatomical connection and finally misdiagnoses this anomaly as double aortic arch.The keys to accurate diagnosis of the disease are clearly visualization of the innominate artery and its relationship with descending aorta and ductus arteriosus by scanning different views.

16.
Article in Chinese | WPRIM | ID: wpr-463608

ABSTRACT

Objective To improve the understanding to transposition of the great arteries with posterior aorta and decrease the clinic misdiagnosis by summarizing their echocardiography features . Methods Echocardiography images were retrospectively reviewed for 7 cases with transposition of the great arteries with posterior aorta who diagnosed in Anzhen Hospital ,and their echocardiography features were summarized .Results In 7 patients ,5 patients had operation ,including 3 for arterial switch operation ,1 for right GLEEN ,1 for right GLEEN and Fortan surgery ,and 2 patients were lost to follow‐up .The echocardiography characters:① Artery short view showed aorta and pulmonary artery existed the half‐surrounding relationship .The aorta was situated posteriorly and the pulmonary artery anteriorly .②Multiple views showed aorta was completely and mostly arised from the right ventricle ,while the pulmonary artery was came off the left ventricle .③ Ventricular septal defects were presented in all cases and aorta could ride the defect of ventricular septal .④ In most cases ,fibrous continuity between the aortic and mitral valve through a ventricular septal defect was found and there was no conus under the aorta .⑤ Some cases could combine the different degree stenosis of the outflow tract of subpulmonary valve and pulmonary valve . Conclusions The connection relationship between two arteries and ventricles can displayed clearly on the long axis view of double outflow tracts of two ventricles under xiphoid process .The acoustic window under the xiphoid process is the key for diagnosis and differential diagnosis of the disease .

17.
Article in Chinese | WPRIM | ID: wpr-333618

ABSTRACT

<p><b>OBJECTIVE</b>To study the relationship between knee osteoarthritis (OA) and intercondylar notch narrowing based on the notch width index.</p><p><b>METHODS</b>Magnetic resonance (MR) images were collected from middle-aged and elderly patients with a definite diagnosis of knee OA, including 42 with mild OA and 37 with moderate to severe OA, with 70 healthy individuals serving as the control group. The notch width indexes NWI, NWI-A, and NWI-P on the coronal images at different levels were calculated, and the intercondylar notch was classified, according to the features on axial MR images, into types A, U, and W. The association of OA with NWI, NWI-A, NWI-P, and notch type was determined, and the cutoff values were obtained based on the ROC curves at different levels as indicators for diagnosis of intercondylar notch stenosis.</p><p><b>RESULTS</b>In the control, mild OA, moderate to severe OA groups, the NWI value on coronal MR images were 0.252±0.019, 0.251±0.017, and 0.240±0.020, NWI-A were 0.261±0.024, 0.259±0.023, and 0.245±0.023, and NWI-P were 0.271±0.026, 0.270±0.024, and 0.254±0.022, respectively. Patients with moderate to severe OA had significantly smaller NWI, NWI-A, and NWI-P than the other two groups (P<0.05), and a significant association was found between NWI values at each level and the occurrence of moderate to severe OA (P<0.01). A NWI value<0.248, NWI-A<0.256, and NWI-P<0.266 supported a diagnosis of intercondylar notch narrowing. Type A intercondylar notch was found in the majority of patients with intercondylar notch narrowing (P<0.05).</p><p><b>CONCLUSION</b>Patients with moderate to severe OA have significant intercondylar notch narrowing, and patients with a type A intercondylar notch are more likely to have intercondylar notch narrowing than those with type U notch.</p>


Subject(s)
Aged , Case-Control Studies , Constriction, Pathologic , Humans , Knee Joint , Magnetic Resonance Imaging , Middle Aged , Osteoarthritis, Knee , Pathology , ROC Curve
18.
Chinese Medical Journal ; (24): 3695-3699, 2014.
Article in English | WPRIM | ID: wpr-240701

ABSTRACT

<p><b>BACKGROUND</b>Acute lymphoblastic leukemia (ALL) and chemotherapy can cause immune imbalance, and gaseous molecule hydrogen sulfide (H2S) can participate in the process of immune response. This study aimed to investigate the immune regulation of H2S in pediatric ALL.</p><p><b>METHODS</b>Children (n = 78) with ALL admitted during 2010-2013 were included in this study. Two blood samples were collected in period of before chemotherapy, bone marrow remission and two days after chemotherapy, respectively. Serum contents of H2S and cytokines, including interleukin-1β (IL-1β), interleukin-2 (IL-2), interferon-γ (IFN-γ), tumor necrosis factor (TNF-α), interleukin-4 (IL-4), interleukin-6 (IL-6), interleukin-10 (IL-10) and macrophage inflammatory protein-1α (MIP-1α), were detected using ELISA method. Stepwise regression was used to analyze the correlation between H2S and cytokines. Furthermore, human Jurkat cells were cultured in vitro, and nucleoprotein of Jurkat cells and peripheral blood mononuclear cells (PBMCs) were collected, contents of cystathionine γ-lyase (CSE) and certain cytokines were measured by Western blotting.</p><p><b>RESULTS</b>Serum concentrations of H2S, IL-1β, IL-6, IL-10 and MIP-1a in children with ALL were increased significantly (P < 0.01), while concentrations of IL-2, TNF-α, IFN-γ and IL-4 decreased obviously (P < 0.01). In patients after chemotherapy, concentrations of H2S and IL-10 were decreased significantly (P < 0.05), but IL-4 and IFN-γ concentrations increased markedly (P < 0.05). At remission stage, H2S, IL-1β, IL-4, IL-6, IL-10 and MIP-1α concentrations were further decreased markedly (P < 0.05), but concentrations of IL-2, TNF-α and IFN-γ increased again (P < 0.05). Protein contents of CSE, IL-10, IL-4 and IL-2 of PBMCs also increased markedly in children with ALL. Moreover, changes of CSE protein contents of PBMCs were consistent with serum H2S contents, and there were significant correlation between H2S and certain cytokines based on stepwise regression analysis. Furthermore, compared with those of PBMCs group, in vitro study indicated that Jurkat cells of H2S group expressed IFN-γ, IL-10, IL-4 and IL-2 protein increased obviously (P < 0.05), while IL-4, IL-2 and CSE expression of PPG group decreased markedly (P < 0.05).</p><p><b>CONCLUSION</b>Gaseous molecule H2S might participate in the process of immune regulation in pediatric ALL through modulating transcription and expression of cytokines.</p>


Subject(s)
Child , Child, Preschool , Cystathionine gamma-Lyase , Blood , Female , Humans , Hydrogen Sulfide , Blood , Interferon-gamma , Blood , Interleukin-10 , Blood , Interleukin-1beta , Blood , Interleukin-2 , Blood , Interleukin-4 , Blood , Interleukin-6 , Blood , Leukocytes, Mononuclear , Metabolism , Male , Precursor Cell Lymphoblastic Leukemia-Lymphoma , Blood , Tumor Necrosis Factor-alpha , Blood
19.
Article in Chinese | WPRIM | ID: wpr-236349

ABSTRACT

<p><b>OBJECTIVE</b>To observe the vasodilating effect of adrenomedullin 2 (ADM2) by antagonizing angiotensin 1 (Ang II), and to explore its mechanism.</p><p><b>METHODS</b>Eighteen male, 180-200 g SD rats were randomly divided into 3 groups (n = 6): control group, Ang II (150 ng/(kg x min)) group and Ang II (150 ng/(kg x min)) + ADM2(500 ng/(kg x h)) group. Mini-osmotic pumps filled with peptide were implanted in the back of rats subcutaneously. After two weeks, the blood pressure was measured by the way of carotid intubation. The plasma was collected for the detection of nitric oxide (NO) content and the activity of endothelial nitric oxide synthase (eNOS). The in situ oxidation of fluorescent dye dihydroethidium (DHE) was used for detecting superoxide in rat arteries. The rat isolated arterial rings were made for studying the vasodilating effect of ADM2. Human umbilical vein endothelial cell line EA. hy 926 cells were cultured and their intracellular reactive oxygen species (ROS) were evaluated by probe DCFH-DA.</p><p><b>RESULTS</b>ADM2 dramatically decreased the blood pressure in angiotensin II-induced hypertension rat model, enhanced plasma NO content and the activity of eNOS and reduced superoxide formation in vessel walls. ADM2 also induced relaxation of the vascular rings preconstricted by Ang II in a concentration-dependent and endothelium-dependent manner. In cultured vascular endothelium, ADM2 ameliorated the ROS generation induced by Ang II.</p><p><b>CONCLUSION</b>Adrenomedullin 2 relaxed blood vessels by antagonizing angiotensin II-induced oxidative stress and improving the vascular endothelial function.</p>


Subject(s)
Adrenomedullin , Pharmacology , Angiotensin II , Pharmacology , Animals , Antihypertensive Agents , Pharmacology , Blood Pressure , Drug Antagonism , Endothelium, Vascular , Human Umbilical Vein Endothelial Cells , Cell Biology , Humans , Male , Nitric Oxide , Blood , Nitric Oxide Synthase Type III , Blood , Oxidative Stress , Rats , Rats, Sprague-Dawley , Reactive Oxygen Species , Metabolism , Vasodilation
20.
Clinical Medicine of China ; (12): 257-260, 2014.
Article in Chinese | WPRIM | ID: wpr-444255

ABSTRACT

Objective To evaluate the predictive value of plasma atrial natriuretic peptide (ANP) level on prognostic of patients with systemic inflammatory response syndrome by dynamic monitoring ANP levels.Methods Ninety-eight patients admitted to the intensive care unite were classified into survival group(n =78) and death group (n =20).The level of plasma ANP,procalcitonin,C-reactive protein and lactic acid were measured.Acute Physiology and Chronic Health Evaluation (APACHE) Ⅱ score were recorded.Results The plasma ANP level of patients in the death group was 0.40 (0.26) μg/L,significantly higher than that in the survival group(0.22(0.12) μg/L,P =0.000).Along with treatment scheme,the plasma ANP level decreased in survival group,and there were significant difference among three times (0.22 (0.12) μg/L,0.17 (0.09) μg/L,0.13 (0.11) μg/L,P =0.000).But there was no difference in ANP level of patients in death group along with the disease developing (0.38 (0.30) μg/L,0.39 (0.23) μg/L,0.39 (0.22) μg/L,P =0.99).ICU hospitalized time in survive group associated with APACHE Ⅱ score,ANP and PCT(r =0.735,0.628,0.487 respectively,P =0.000,0.001,0.021).Conclusion ANP is proved to be a good clinical index in prognostic evaluation of patients with sepsis.

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