OBJECTIVE: To investigate the relationship between behavioral changes and cell proliferation in subventricular zone (SVZ) after intracerebral hemorrhage (ICH) in adult rats. METHODS: Forty male Sprague-Dawley rats were randomly assigned into a behavioral test group (n = 19) and a bromodeoxyuridine (Brdu) immunohistochemical staining group (n = 21). ICH was induced by stereotactial injection of collagenase type VII into straitum. Proliferating cells were labeled by injection intrapenitoneally of bromodeoxyuridine in a pulse protocal. Rats were killed on day 2, 7, 14, and 28 after the ICH. Behavioral test and bromodeoxyuridine immunohistochemical staining were performed.Behavioral change was tested by forelimb placing test, Berderson's grade and corner turn test in rats. Cell counting of bromodeoxyuridine immunoreactive cells in SVZ was performed. RESULTS: There were marked neurological deficits by day 2 after the ICH, with progressive recovery of function over 4 weeks. A significant increase in the number of bromodeoxyuridine immunoreactive cells in the ipsilateral and cortralateral SVZ was observed from 2 to 14 days with a peak at day 7 after the ICH compared with the sham group.The bromodeoxyuridine immunoreactive cells decreased to control level 28 days after the ICH. CONCLUSION Proliferation of cells in SVZ corresponds well with behavioral recovery after the ICH, which indicates SVZ cells may be involved in the repairing process after the ICH.
Animals ; Behavior, Animal ; physiology ; Cell Proliferation ; Cerebral Ventricles ; pathology ; Intracranial Hemorrhages ; pathology ; physiopathology ; Male ; Random Allocation ; Rats ; Rats, Sprague-Dawley

Objective To study the placental vascular distribution of monochorionic (MC) twins with twin-to-twin transfusion syndrome (TTTS) or hirth weight discordance.Methods Twenty-eight MC placentas were injected in Peking University Third Hospital between Feb.2010 and Feb.2011.The vascular distribution type (parallel,crossed,mixed and monoamniotic),the anastomosis of vessels and the placental sharing were recorded.The outcome of pregnancy and the placental characteristics of birth weight discordance (birth weight discordance ≥ 20％) in non-TTTS MC twins were analyzed.Results (1) The outcome of pregnancy:the miscarriage or gestational weeks of 28 MC twins were 20 to 38 weeks (median of 35 weeks).Six cases were TTTS,3 of which received fetoscopic laser occlusion of communicating vessels (FLOC).There were 48 live births,with an average birth weight of (2036 ± 623) g.(2) Type of placental vascular distribution:in the 28 MC placentas,number of parallel,crossed,mixed and monoamniotic type of placental vascular distribution were 4 (14％),14 (50％),6 (21％) and 4 (14％) cases,respectively.No parallel type was found in TTTS.There was no significant difference of vascular anastomosis or unequal placental sharing among the different placental vascular distribution types (P ＞ 0.05).(3) Characteristics of placental vascular distribution in birth weight discordance twins:there were 20 non-TTTS MC twin pregnancies,all of which got live births of both babies.Birth weight discordance equal to or more than 20％ was found in 6 pairs of newborns,while birth weight discordance less than 20％ was found in the rest 14 cases.Ratio of unequal placental sharing was significantly different between the two groups (P ＜ 0.01).There was no significant difference of umbilical cord insertion,placental vascular distribution and anastomosis in the two groups (P ＞0.01).Conclusions Vascular distribution type of MC twins might be related to TTTS.Unequal placental sharing is a risk factor of birth weight discordance in non-TTTS MC twins.

Objective On patients with mechanical ventilation spontaneous breathing trial (SBT) success, out of breath machine smoothly pulled out after endotracheal intubation for active airway moist sequential therapy of clinical new method and new technology. Methods Between January 2013 and May 2014 respiratory endotracheal intubation implementation of mechanical ventilation with intensive medicine successful withdraw machine pulled out of 135 patients with tracheal intubation, they were divided into group A(68 cases) and group B(67 cases) by random digits table method. The patients in group A were treated with buoy type oxygen device, group B with active airway moist heat treatment unit. The breathing rate, PaO2, SpO2, heart rate, Clinical Pulmonary Infection Score(CPIS) were measured after 72 h of pull out endotracheal intubation in two groups. Sputum viscosity was evaluated by Airway Secretions Score before pull out endotracheal intubation and after 24, 48, 72 h of pull out endotracheal intubation in two groups. Results There were no significant differences between two groups in gender, age, clinical diagnosis, mechanical ventilation time, acute physiology and chronic health evaluation systemⅡrating etc (P>0.05). The breathing rate, heart rate and CPIS score respectively (20.94 ± 0.89), (80.79±4.67) times/min and (7.13 ± 2.54) points after 72 h of pull out endotracheal intubation in group B, and (24.12 ± 0.97), (86.32 ± 5.12) times/min and (8.79±3.56) points in group A, and there were significant differences(t=5.113, 7.298, 5.597, all P<0.01). PaO2, SpO2 were (93.24±1.96) mmHg(1 mmHg=0.133 kPa), 0.973 2±0.014 8 in group B, and (87.35±2.32) mmHg, 0.937 8±0.013 2 in group A, and there were significant differences(t=9.279, 4.548, all P<0.01). There was no significant difference in sputum viscosity before pull out endotracheal intubation between two groups (P>0.05). After 24, 48 and 72 h of pull out endotracheal intubation, group B of patients with sputum viscosity was suitable in group A (Z=-2.684,-2.870,-2.771, all P < 0.01). Conclusions Mechanical ventilation in patients with ventilator buoy type oxygen device for the pull out after endotracheal intubation success does not favor the sputum drainage, improve patients with dyspnea and hypoxemia is not obvious. By positive airway plus temperature humidity to sequential therapy is helpful to correct hypoxemia, improve the patients' respiratory function, reduce the breathing difficulties, reduce sputum viscosity, promote the airway drainage unblocked, shortening the time of lung infection.

Objective To investigate the risk factors of electrocoagulation syndrome after endoscopic submucosal dissection (ESD) in patients with colorectal lesions.Methods Clinical data of 145 patients with colorectal mucosal lesions undergoing ESD in People's Hospital of Wuhan University between September 2010 and September 2015 were retrospectively studied.Results Among 45 patients,post endoscopic submucosal dissection electrocoagulation syndrome (PEECS) was developed in 32 cases (22％).The median age in PEECS group was higher (t =-5.783,P =0.000),the median lesion size was larger(t =-5.590,P =0.000),the median length of hospital stay was longer (t =-6.841,P =0.000) than those in non-PEECS group.Univariate regression analysis showed PEECS was associated with the age,lesion size,lesion location,length of hospital stay,malignant tumor,polyps type,resection modality.Multivariable logistic regression analysis showed that the independent risk factors for the development of electrocoagulation syndrome were age ＞65 year (OR =1.123,95％ CI:1.013-1.244,P =0.027),lesion size ＞ 3.5 cm (OR =1.173,95％ CI:1.015-1.357,P =0.031),malignant tumor (OR =3.498,95 ％ CI:1.460-8.379,P =0.005),hospital stay ＞ 10 d (OR =2.480,95％ CI:1.346-4.569,P =0.004),non-rectal lesions (OR =12.612,95％ CI:3.446-46.157,P =0.000).Conclusion Attention should be paid for colorectal lesion patients with high risk of PEECS,when endoscopic submucosal dissection is performed.

Objective To observe the effect of continuous pumped dexmedetomidine on hemodynamics, awakening quality and stress response in double -lumen tube extubation patients.Methods 60 patients with thoracic surgery were divided into saline group(group N,n =30)and Dex group(group D,n =30).Both two groups were continuously pumped NS and dexmedetomidine respectively 20min before anesthesia.MAP,HR and SpO2 at different time points during the surgery were recorded.Extracted 5ml arterial blood at the time point of T0 and T3,centrifugated and stored at -80 ℃ for testing renin levels.The extubation time,restlessness incidence,orientation recovery time, extubation quality score were recorded.Results The values of MAP in group D at time points of T0,T1,T2,T3,T4 were (97 ±15)mmHg,(102 ±12)mmHg,(103 ±11)mmHg,(98 ±12)mmHg,(96 ±13)mmHg.The values of HR in group D at different time points were (69 ±9)times/min,(80 ±6)times/min,(90 ±7)times/min,(74 ±5)times/min,(73 ±6)times/min.The values of SpO2 in group D at different time points were (95 ±3)%,(98 ±2)%,(98 ± 2)%,(95 ±3)%,(96 ±2)%.The values of MAP in group N at time points of T0,T1,T2,T3,T4 were (96 ± 15)mmHg,(112 ±16)mmHg,(120 ±12)mmHg,(117 ±14)mmHg,(102 ±15)mmHg.The values of HR in group N at different time points were (68 ±7)times/min,(84 ±8)times/min,(105 ±6)times/min,(89 ±6)times/min, (80 ±7)times/min.The values of SpO2 in group N at different time points were (96 ±2)%,(98 ±2)%,(97 ± 3)%,(93 ±3)%,(92 ±4)%.The values of MAP,HR,SpO2 at different time points in group D were significantly lower than those in group N,the differences were statistically significant (the t values of MAP at different time points were tT1 =2.74,tT2 =5.72,tT3 =25.63,tT4 =1.66,all P <0.05;the t values of HR at different time points were tT1 =2.20,tT2 =8.91,tT3 =10.52,tT4 =4.16,all P <0.05;the t values of SpO2 at different time points were tT1 =0.00,tT2 =1.52,tT3 =2.58,tT4 =4.9,PT3 <0.05,PT4 <0.05).There was significant difference between the two groups in orientation recovery time[(3.3 ±2.2)min vs (5.2 ±2.3)min,P =0.0018].There was significant difference between the two groups in agitation score[(1.3 ±0.9)vs (2.4 ±1.2)].There was significant difference between the two groups in extubation quality score[(2.1 ±1.2)vs (3.2 ±1.4),P =0.0018].There was statistical difference between the two groups in T3 adrenal hormones[(N:120 ±25.3)pmol/L,(D:93.4 ±23.2)pmol/L,P =0.00].The dose of sufentanil (60.5 ±9.2)μg in group N was higher than (40.4 ±10.2)μg in group D (P =0.001).The dose of remifentanil (3.3 ±0.8)mg in group N was higher than (2.4 ±0.9)mg in group D (P =0.001).Conclusion Continuous pumped dexmedetomidine can effectively improve awakening quality of patients with double -lumen tube.

Objective To explore the association between patatin-like phospholipase domaincontaining protein 3 (PNPLA3) gene rs738409 polymorphism and the susceptibility of non-alcoholic fatty liver disease (NAFLD).Methods Data bases were comprehensively searched to retrace all the related studies on the association between PNPLA3 gene rs738409 polymorphism and susceptibility.Of NAFLD,the pooled OR with 95％ CI of the association between PNPLA3 gene rs738409 polymorphism and NAFLD susceptibility were performed using different genetic models.Subgroup analysis based on the source of population and sensitivity analysis was performed to detect the stability of results.Results 28 original studies with 6 216 patients and 8 218 controls were involved in the final combination of data.Findings from the meta-analyses showed that there were strong associations between PNPLA3 gene rs738409 polymorphism and the susceptibility of NAFLD,under different genetic model comparisons [GG vs.CC:OR=2.42,95％CI:1.83-3.21,P＜0.001 ;CG vs.CC:OR=1.28,95％CI:1.15-1.43,P＜0.001 ; CG+GG vs.CC:OR=1.31,95％CI:1.17-1.46,P＜ 0.001 ; GG vs.CC + GC:OR=2.26,95％CI:1.76-2.90,P＜0.001].Similar results were found in both Asian and Caucasian populations.Conclusion Results from the Meta-analysis strongly suggested that there appeared significant association between PNPLA3 gene rs738409 polymorphism and the susceptibility of NAFLD.

Objective To evaluate the feasibility,safety and short-term fetal outcome of ultrasoundguided percutaneous microwave ablation for selective feticide in complicated monochorionic twin pregnancies.Methods Twenty-two patients who underwent microwave ablation for selective fetal reduction in Peking University Third Hospital between July 2015 and June 2016 were retrospectively studied.Surgical complications,fetal outcomes and neural development at age of 60 days were recorded.One-way ANOVA,Mann-Whitney U test,Chi-square or Fisher's exact test was used for statistical analysis.Results Indications of the 22 patients for selective feticide included five cases of twin pregnancy with one anomalous fetus,five cases of severe twintwin transfusion syndrome (TTTS),three cases of twin reserved arterial perfusion (TRAP) and nine cases of selective intrauterine growth restriction (sIUGR).All surgeries were successful under regional anesthesia.Four pregnancies (18.2％,4/22) ended in miscarriage following surgery,three of which were caused by intrauterine fetal death (13.6％,3/22) and one by premature rupture of membranes before 26 weeks of gestation (4.5％,1/22).Totally,18 babies were born alive at an average gestational age of (35.5 4.2) weeks (26～40 weeks+2) and with an average birth weight of (2 380.778) g (800～3 430 g),and four of them were preterm infants less than 32 weeks of gestation.Except for one extremely low birth weight infant,whose gestational age was 26 weeks at birth and birth weight was 800 g,died two days after birth,17 infants were discharged alive,giving an neonatal survival rate of 17/18.The total fetal survival rate was 77.3％ (17/22).Polyhydramnios,placenta location,and position of the fetus being aborted showed no significant effect on miscarriage or fetal survival rate (all P＞0.05).No severe maternal complications occurred.No brain injuries were detected by imaging examination in 17 infants who were followed up to 60 days of age.Conclusions Ultrasound-guided percutaneous microwave ablation can be used for selective feticide in complicated monochorionic twin pregnancies.Further studies are needed to evaluate its effects on long-term fetal outcome.

Objective To study whether matrix metalloproteinases-9 (MMP)-1562C/T (rs3918242) and MMP-2-1306C/T (rs243865) were associated with the susceptibility on nonalcoholic fatty liver disease (NAFLD) and the interactions between the two factors and central obesity.Methods Genotypes of 545 patients and 636 subjects with NAFLD under control were examined by polymerase chain reaction-based restriction fragment length polymorphism (PCR-RFLP).Unconditional logistic regression (ULR) was performed to assess the NAFLD risk.The geneenvironment interactions on the risk of NAFLD were explored by generalized multifactor dimensionality reduction (GMDR) and ULR methods.Results Results from the case-control analysis indicated that there was an increased risk of developing NAFLD for MMP-9 rs3918242 (TT/CT) genotype carriers,when compared with the non-carriers (CC),with OR=1.67,95％ CI:1.32-2.12,P=0.001;Adjusted OR=1.65,95％CI:1.31-2.01 (P=0.008).However,risk reduction of NAFLD was found when MMP-2 rs243865 (TT/CT) genotype carriers compared with the non-carriers (CC),with OR=0.68,95％CI:0.53-0.86,P=0.001;with adjusted OR=0.66,95％CI:0.49-0.90 (P=0.007).Data from the GMDR showed that gene-environment interaction among rs3918242 and central obesity on the risk of NAFLD might be significant (P=0.001).By using the ULR method,subjects as central obesity-positive but with genotype CT/TT,appeared having 4.50 (95％ CI:2.78-7.17,P =0.007) times risk of NAFLD,when compared to the central obesity-negative subjects with genotype CC after adjusting for the covariates.Conclusion MMP-9 rs3918242,MMP-2 rs243865 were associated with risk of NAFLD while both rs3918242 and central obesity showing synergistic effects on the risk of the NAFLD.

Objective:To evaluate the outcome of laser coagulation under fetoscope for placental chorioangioma (CA).Methods:The clinical data of three pregnant women with giant CA treated by laser coagulation under fetoscope in Peking University Third Hospital from January 2018 to December 2020 were analyzed retrospectively. Relevant articles up to September 2022 were retrieved from Wanfang Database, China National Knowledge Infrastructure and PubMed, and the clinical data of all patients were retrospectively summarized. Indications and intervention effects of fetoscopic laser therapy were analyzed. Descriptive statistics was used to describe the data.Results:Thirteen patients were involved in this study including 10 cases retrieved from the databases. The average age of the pregnant women was (30.3±6.2) years old. There were 12 cases of single pregnancy and one case of twin pregnancy (monochorionic diamnionic twin pregnancy). Except for cases for which data were not available in the literatures, at the diagnosis of CA, the average gestational age was (19.9±4.5) weeks ( n=7) and the average maximum diameter of the mass was (6.1±4.1) cm ( n=6). The patients underwent fetoscopic laser therapy at an average gestational age of (25.0±2.0) weeks ( n=13) with the average maximum tumor diameter of (7.6±2.8) cm ( n=9). After treatment, the amniotic fluid volume of three cases decreased to normal. In one case, the amniotic fluid volume decreased but was still above the upper limit of the normal range. Moreover, the maximum tumor diameter decreased in four cases; the peak systolic velocity of the fetal middle cerebral artery decreased to normal in one case; fetal heart function became normal in two cases and fetal edema was relieved in one case. Among the three patients treated in our hospital, the blood supply of CA disappeared after treatment. Intrauterine fetal death occurred in two cases. The other 11 patients gave birth to live babies at the gestational age of (36.6±3.8) weeks with five through cesarean section (5/11), five through vaginal delivery (4/11) and two not reported. The birth weight of the neonates was (2 712±1 023) g and all of them survived. The gender of five neonates were reported and all were females, two of them were monochorionic diamnionic twins. No abnormality was found in the three neonates delivered in our hospital during a six-month follow-up. No abnormality was reported in the other neonates during ten days to six months of follow-up. Conclusions:Fetoscopic laser coagulation may help reduce the size of CA, decrease complications and improve pregnancy outcomes.

Objective To study the feasibility and value of magnetic resonance diffusion tensor imaging (DTI) to monitor non?arteritic anterior ischemic optic neuropathy (NAION). Methods Thirty eight NAION patients (56 eyes) were divided into acute period in 17 eyes, progressive period in 16 eyes and chronic period in 23 eyes at the base of onset time. According to matching principle, 56 eyes in 38 normal controls (NCs) were enrolled. All the patients and NCs underwent MR and DTI scan. The raw data were processed by two experienced radiologists, mean diffusivity (MD), axial diffusivities (λ//), radial diffusivities (λ┴), fractional anisotropy (FA) and Length value were got. The independent sample t test was used for the parameter values between the NAION group and the NCs group. A single factor variance analysis was used to compare the parameters among different stages of NAION group. Results Compared to the NCs group, the values of FA and Length in NAION group were reduced [0.20±0.11 vs 0.31±0.12, (5.85±0.92) vs (65.11± 6.89) mm], and the differences were statistically significant (t=-4.28,-5.25;P<0.05). The values of MD andλ┴were increased [(0.16±0.04)×10-3 vs (0.10±0.04)×10-3 mm2/s, (0.16±0.05)×10-3 vs (0.09±0.03)×10-3 mm2/s] in NAION group and the differences were statistically significant (t=6.83, 7.10;P<0.05). The value of FA and Length in acute period, progressive period and chronic period of the NAION group decreased differently compared to the NCs group. At the same time, the value of MD value and λ┴in the three periods of the NAION group increased compared to the NCs groupand the differences were statistically significant (P<0.05). The value of FA between the acute period, the progressive period, and the chronic period of NAION group were statistically signficant (F=10.88, P<0.05). However, no significant differences were found in the values of MD, λ┴and Length of the NAION group (F=0.23, 0.64, 0.33, 1.38;P=0.79, 0.54, 0.72, 0.27). Conclusion The parameters of DTI can be used to monitor the damage of optic nerve and development in NAION.