Objective To investigate the effects of lower limb training at different intensities on the recovery of walking function after stroke.Methods Thirty-six stroke patients were randomly divided into a 40-minutes of training group,an 80-minutes of training group and a 120-minutes of training group.Because of three missing followup cases,the final numbers of cases were 12,11 and 10 cases respectively.All of the patients received lower limb training based on regular rehabilitation therapy,but at the three different intensities:40 minutes,80 minutes or 120 minutes a day,five days per week,for 4 weeks.Walking function was assessed using the Holden functional ambulation categories (FACs) and the Fugl-Meyer assessment (FMA).These were carried out before treatment,and after two and four weeks of treatment.Results Before treatment,the average FACs of the three groups were (1.83 ±0.94),(1.73 ± 1.01) and (1.80 ± 1.03) respectively.Their average FMA scores were (19.17 ±5.52),(23.00±4.71) and (19.40 ±7.90).After two weeks of treatment,the average FAC in the 120-minutes training group was (3.30 ± 0.48),significantly higher than in the 40-minutes training group.After four weeks the average FACs in the 40-minutes,80-minutes and 120-minutes training groups were (2.67 ± 0.65),(3.18 ± 0.60) and (3.80 ±0.42) respectively.The differences between the 120-minutes group and the 80-minutes group as well as between the 80-minutes group and the 40-minutes training group were statistically significant.The average FMA scores of the three groups after four weeks were (25.08±4.46),(28.64±3.56) and (25.90±5.19) respectively.All the differences were significant compared with pre-treatment.There were no significant differences in FMA scores among the three groups after two weeks or four weeks of treatment.Before treatment,the proportion of patients able to walk independently in the 40-minutes,80-minutes and 120-minutes training groups were 16.7％,18.2％ and 20.0％.After two weeks the proportions had risen to 33.3％,36.4％ and 100％ respectively,so the results in the 120-minutes training group were significantly better.After four weeks of treatment the proportions of the three groups were 58.3％,90.9％ and 100％.All these improvements were significant compared with pre-treatment,but when compared with the 80-minutes training group,neither of the others showed a significant difference.Conclusions Intensive training can accelerate the recovery of walking function of patients after stroke and promote their ability to participate in daily activities.

Objective To study the current situation of pediatric emergency department of primary hospitals in Guangdong province,in order to provide evidence for the development of appropriate pediatric emergency skill.Methods A questionnaire survey was conducted in primary hospitals of Guangdong province by face to face and mail.The questionnaire was self-designed,including the hospital area and level set,the key equipment in pediatric emergency,common symptoms and diseases,the need for pediatric specialty in local medical colleges.Results60 questionnaires were released and 38(63.3％) were available,which were from 14 different cities of Guangdong province.Among the 38 hospitals,16 hospitals(42.1％) had no independent pediatric emergency;24 hospitals(63.2％) had no blood gas analyzer;23 hospitals(60.5％) without a defibrillator;22 hospitals(57.9％) had no bedside ultrasound,neonatal warm or warm box;17 hospitals(44.7％) had no bedside X-ray,infusion pump;13 hospitals(34.2％) without gastric lavage machine;12 hospitals(31.6％) without ventilator;8 hospitals(21.1％) without the monitor.Top five symptoms were fever,cough,vomiting,diarrhea,convulsion.The top five diseases were pneumonia,fever of unknown,acute gastroenteritis,hand-foot-mouth disease,convulsion of unknown.Only 5 hospitals (13.2％) thought there was no need for pediatric specialty in local medical colleges.Conclusion Shortages of the pediatric emergency equipments and specialists are very severe in primary hospitals,in order to improve the status of pediatric emergency,some ways can be explored:the construction of grassroots pediatric emergency should be speeded up;a grades regional system for child emergency transport should be improved as soon as possible;the appropriate pediatric emergency skills and training for primary hospitals should be explored and compiled into instructions;pediatric emergency health education could be implemented in child health care.

Objective To explore the relationship between the types of female breast density and age and breast cancer .Methods By accepting the digital mammography X -ray examination for 5 006 women cases and according to the ACR BI -RADS standard in the fourth edition ,the breast density assessment was quantified . We analysed the relationship between the breast density and age and breast cancer .Results In 5 006 cases,the average female age was between 44.22 ±8.09 years old,median age was 43 years old.The components of the breast density were fat type , small amount type , large amount type and compact type each count were 256 (5.11%),726(14.51%),3 719(74.29%),305(6.09%)respectively.By dividing into different age -group to analyze the breast density,there was significant statistical differences of the breast density among age -groups(P<0.001).Among them the breast cancer were 184 cases.Age was between 51.26 ±10.15 years old.Breast cancer in each breast density were fat type 10.16%(26/256),small amount type 9.09%(66/726),large a-mount type 2.45%(91/3719)and compact type 0.33%(1/305).There were statistical differences among age -groups and breast densities and breast (P<0.001).Conclusion Age plays a very important effects on the fe-male breast density .The lower breast density is a high risk factor to breast cancer occurrence .

[ ABSTRACT] AIM:To investigate the effect of oxidized low-density lipoprotein ( ox-LDL) on autophagy in mac-rophages and the underlying molecular mechanisms.METHODS:RAW264.7 macrophages were pretreated with 2 mg/L anti-CD36 monoclonal antibody (anti-CD36 mAb), 5 μmol/L diphenyleneiodonium (DPI), 3 mmol/L 3-methyladenine (3-MA) or 1μmol/L rapamycin for 1 h and then treated with ox-LDL (100 mg/L) for 12 h.The viability of the cells was measured by MTT assay.The activities of lactic dehydrogenase ( LDH) in the medium and nicotinamide adenine dinucleoti-de phosphate ( NADPH) oxidase, superoxide dismutase ( SOD) in the cells as well as the levels of intracellular reactive ox-ygen species ( ROS) and malondialdehyde ( MDA) were determined to characterize the membrane integrity and the oxida-tive stress, respectively.The protein levels of beclin-1 and microtubule-associated protein 1 light chain 3-II ( LC3-II) , 2 important molecular markers of autophagy, were examined by Western blotting.RESULTS:ox-LDL induced autophagy in
RAW264.7 macrophages as assessed by upregulation of beclin-1 and LC3-II.Similar to 3-MA, an autophagy inhibitor, an-ti-CD36 mAb significantly inhibited the ox-LDL-induced upregulation of beclin-1 and LC3-II.Anti-CD36 mAb suppressed the ox-LDL-induced oxidative stress as revealed by decreased NADPH oxidase activation, ROS and MDA generation as well as increased SOD activity.Similar results were observed in the cells pretreated with DPI, a NADPH oxidase inhibitor.Mo-reover, DPI significantly inhibited the ox-LDL-induced upregulation of beclin-1 and LC3-II.Inaddition, the decrease in the cell viability and increase in LDH release induced by ox-LDL were promoted by 3-MA and blocked by rapamycin ( an auto-phagy inducer).CONCLUSION: ox-LDL induces autophagy in RAW264.7 macrophages, which may be involved in CD36-mediated ox-LDL uptake and subsequent activation of oxidative stress, and moderate activation of autophagy may pro-tect macrophages from ox-LDL-induced injury.

Objectives To investigate the prevalence of heterogeneous vancomycin intermediate Staphylococcus aureus(hVISA) and the sensitivity of hVISA to novel antibiotics,and to explore the risk factors and infection attributable mortality associated with hVISA infection.Methods A total of 456 methicillin resistant Staphylococcus aureus (MRSA) isolates were isolated in Zhongshan Hospital from January,2008 to November,2010.All MRSA isolates were investigated for hVISA by two agar screening methods BHIA5T (brain-heart infusion containing teicoplanin 5 mg/L)or BHIA6V (brain-heart infusion containing vancomycin 6 mg/L),as well as macroEtest method(MET).Possible hVISA isolates were tested by modified population analysis profile-area under the curve (PAP-AUC).The minimal inhibitory concentrations(MICs) of vancomycin,teicoplanin and linezolid were determined by microbroth dilution as recommended by Clinical Laboratory Standards Institute(CLSI).The contribution difference between hVISA and vancomycin susceptible Staphylococcus aureus (VSSA) in different MIC range was compared.A retrospective case-control study of the patients with hVISA infection or VSSA infection was carried out and statistical analysis was performed using t test,Mann-Whitney test,x2 test and Fisher exact test.Results A total of 105 isolates of hVISA were screened by BHIA5T and BHIA6V (23.0％) with other 23 isolates by MET(5.0％) and 21 by PAP-AUC(4.6％).All isolates were 100％ sensitive to vancomycin,teicoplanin and linezolid.The vancomycin MIC [(1.76 ±-0.16) mg/L] in hVISA group was significantly higher than that in VSSA group[(1.09 ± 0.07)mg/L,P ＜ 0.01],which was a potential risk factor for hVISA infection.The retrospective study showed chronic obstructive pulmonary disease (COPD) was also a risk factor for hVISA infection of the lower respiratory tract.No significant difference in infection attributable mortality was showed between the hVISA group and the VSSA group.Conclusions The overall prevalence of hVISA in Zhongshan Hospital is estimated as 4.6％,while the prevalence of hVISA isolated from blood is as high as 12.5％.All isolates are 100％ sensitive to vancomycin and linezolid.COPD is a risk factor for hVISA infection of the lower respiratory tract.

Objective To evaluate the efficacy of Lianhua Dingchuan Tablets in bronchial asthma.Methods Fifty BALB/C mice were randomly and equally divided into control (Con) group,ovalbumin (OVA) group,dexamethasone (DEX) group,high-dose Lianhua group,low-dose Lianhua group.The mice were sensitized and challenged with OVA plus aluminium hydroxide to establish asthmatic model and were pre-treated 30 minutes before challenge.Specific airway resistance (sRaw) was used to evaluate airway hyperresponsiveness,and airway inflammatory changes were measured.ELISA and Magnetic Luminex(R) were used to quantified the levels of IL-4,IL-13 and INF-γ.Results Airway resistance significantly decreased in DEX group and High-dose Lianhua group (P＜0.05).Levels of inflammatory cells and IL-13 in BALF evidently reduced in DEX group,high-dose Lianhua group and low-dose Lianhua group (P ＜ 0.05),while IL-13 level in serum only decreased in DEX group.There was no significant changes in the levels of IL 4 and INF γ among those groups.Conclusions Lianhua Dingchuan Tablets might relieve the symptoms of asthma by reducing IL-13 level and inhibiting the airway inflammation.

Objective To investigate the expression of Toll-like receptor 2(TLR2)and Toll-like receptor 4(TLR4)in peripheral blood mononuclear cells(PBMC)in children with recurrent respiratory tract infection(RRTI)and its relationship with T helper cell 1(Th1)/T helper cell 2(Th2)immune response.Methods A total of 65 children diagnosed with RRTI who admitted to the hospital from December 2020 to December 2022 were enrolled in the study as the RRTI group,and 45 healthy children who underwent physical examination in the hospital during the same period were enrolled as the control group.The relative expression levels of TLR2 and TLR4 mRNA in PBMCs were detected by real-time fluorescence quantitative PCR(qPCR).The expres-sion rates of TLR2 and TLR4 protein in PBMCs were detected by flow cytometry.The levels of Th1 cytokine interferon-γ(IFN-γ),Th2 cytokine interleukin-4(IL-4)and their ratio(IFN-γ/IL-4)in plasma were detected by enzyme-linked immunosorbent assay(ELISA).Pearson correlation analysis was used to analyze the corre-lation between TLR2,TLR4 protein expression rates and plasma IFN-γ,IL-4 levels.Results The RRTI group had significantly higher plasma level of Th2 cytokine IL-4 than the control group,significantly lower plasma level of Th1 cytokine IFN-y than the control group,and significantly lower ratio of IFN-γ/IL-4 than the con-trol group,the differences were all statistically significant(P＜0.05).The relative expression levels of TLR2 and TLR4 mRNA and protein expression rates in PBMC of children in the RRTI group were higher than those in the control group,and the differences were statistically significant(P＜0.05).Pearson correlation analysis showed that the protein expression rates of TLR2 and TLR4 in PBMC of children with RRTI were both nega-tively correlated with both plasma IFN-γ levels and IFN-γ/IL-4(P＜0.05)and positively correlated with plasma IL-4 levels(P＜0.05).Conclusion The expression of TLR2 and TLR4 in PBMC and plasma Th1/Th2 cytokines in children with RRTI may be involved in the occurrence and development of the disease.Ex-cessive activation of TLR2 and TLR4 may weaken Th1 function and enhance Th2 function.

Objective: Apolipoprotein E (ApoE) is mainly synthesized in the liver. So far, it is unknown the relationship among APOE gene polymorphisms and WML, brain atrophy. Therefore, the aim of the study was to assess the associations of APOE gene polymorphisms in patients with WML and brain atrophy. Methods: A total of 58 patients with WML, 128 patients with brain atrophy, 112 patients with co-occurrence of WML and brain atrophy and 95 healthy elderly volunteers were recruited from Renmin Hospital of WuHan University. Results: Allele E3 was the most common allele. The alleles E2 had significantly higher levels of ApoB and lower age in WML group. The alleles E2 was associated with the lower level of ApoB, LDL-Ch, TCh, and sdLDL in co-occurrence group. The E3/E3 genotype has higher level of sdLDL, but lower age and female frequency in WML. The E3/E4 genotype had higher level of TG, but lower age in WML. Gender, Age, E2, Hyperhomocysteinemia and UA were also significantly associated with disease progression. Conclusion This study found that clinical data, lipids and metabolic complications were closely related to ApoE genotypes and alleles, and also disease progression and type.

Objective To summarize the CT imaging features of peritoneal metastasis of gastric cancer (GC).Methods The retrospective cross-sectional study was conducted.The clinicopathological data of 78 GC patients with peritoneal metastasis who were admitted to the First Affiliated Hospital of Nanjing Medical University from January 2013 to September 2016 were collected.All the patients underwent plain and enhanced scans of CT,and imaging data were converted to the multiplanar reformation (MPR) and maximum intensity projection (MIP).Observation indicators:(1) CT imaging features of primary lesion of GC;(2) CT diagnostic accurary and imaging features of GC with peritoneal metastasis;(3) CT imaging features of lymph nodes and other abdominal organ metastasis;(4) treatment and follow-up.Patients selected treatment plan according to results of laboratory and imaging examinations and patient's will.Follow-up using outpatient examination,telephone interview and correspondence was performed to detect the treatment method and patients' prognosis up to December 2016.The survival time was from post-treatment to death or end of follow-up.Measurement data with skewed distribution were described as M (range).Results (1) CT imaging features of primary lesion of GC:primary tumor location of 78 patients:tumor located in the antrum,leather bottle stomach,gastric cardia,lesser curvature,gastric antrum and body and greater curvature were detected in 40,11,9,9,5 and 4 patients,respectively.All the 78 patients were in T4 stage,including 43 with T4a stage and 35 with T4b stage.(2) CT diagnostic accurary and imaging features of GC with peritoneal metastasis:of 78 patients,57 were found with peritoneal metastasis by CT examinations before chemotherapy,15 with peritoneal metastasis by exploratory laparotomy or open surgery and 6 with peritoneal metastasis by follow-up CT re-examinations after gastrectomy.Seventy-two patients were diagnosed as GC with peritoneal metastasis by CT scans,and final diagnosis,missed diagnosis and overdiagnosis were detected in 78,9 and 3 patients,respectively.The precision,sensitivity,specificity,positive and negative predictive values of CT diagnosis were respectively 98.7％,88.5％,99.6％,95.8％ and 98.9％.Location and manifestation of 78 GC with peritoneal metastasis patients:① Peritoneal effusions:71 patients were accompanied with peritoneal effusions,including 21 with the slight peritoneal effusions and 50 with moderate and massive peritoneal effusions.② Greater omentum thickening:greater omnentum of 59 patients showed sheet,flocculent and nodular thickening,with a mass and cake-like change.③ Peritoneal thickening:54 patients had peritoneal thickening,with the main of nodulelike and thick lines-like thickening;thickening occurred mainly in around the liver,peritoneal cavity and pelvic floor;11 patients were found with obvious left anterior renal fascia thickening.④ Mesenteric thickening:46 patients were found with mesenteric thickening and edema,showing increased fat density with multi-node shadow.⑤ Lesser omentum and hepatogastric ligament:18 patients were found with increased fat density of lesser omental bursa,showing striped and nodular shadow.⑥ Transverse mesocolon:increased local fat density with striped-and nodular-like changes were seen in 15 patients after coronal and sagittal planes reconstruction,including 5 with local wall thickening of transverse colon.⑦ Ovary:8 patients had ovarian metastases,including 6 with bilateral metastases and 2 with unilateral metastasis;diameter of metastatic tumor was 3-12 cm.⑧ Intestinal canal:6 patients had local intestinal wall thickening,including 3 in small intestine and 3 in transverse colon,thickening tissues were mainly located in the mesentery,showing obvious intestinal wall enhancement.⑨ Liver capsule node:2 patients showed multi-node abnormal enhanced lesions under liver capsule.(3) CT imaging features of lymph nodes and other abdominal organ metastasis:78 patients were accompanied with lymph nodes enlargement,including 41 in N2 stage and 37 in N3 stage;liver metastases were detected in 13 patients;5 had adrenal metastases,including 3 with bilateral metastases and 2 with unilateral metastasis;4 had lower GC invading the pancreatic head and body;2 had upper GC invading the liver and spleen;1 had leather bottle stomach invading the pancreatic head and neck,and inducing to obstruction of biliary tract.(4) Treatment and follow-up:of 78 patients,62 underwent systemic chemotherapy,6 underwent systemic chemotherapy and intraperitoneal hyperthermic perfusion chemotherapy,5 underwent systemic chemotherapy and local radiotherapy and 5 underwent palliative operations due to gastrointestinal tract obstruction or bleeding.Of 78 patients,69 were followed up for 15 months (range,3-21 months),and 9 lost to follow-up.The median survival time of 69 follow-up patients was 12 months (range,3-19 months).Conclusions CT imaging features of peritoneal metastasis of GC show specific sites of metastasis and performance.Combining with CT axial images and images of coronal and sagittal planes reconstruction,adjusting appropriate window width and level would be benefit to observe primary lesions of GC and peritoneal metastasis.

Objective To compare and analyze the short-term effect of play-based communication and behavior intervention (PCBI) and applied behavioral analysis (ABA) on the treatment of toddlers with autism spectrum disorder (ASD).Methods Seventy-four ASD toddlers aged from 19 to 30 months were recruited in Nanjing Brain Hospital Affiliated to Nanjing Medical University from November 2017 to May 2018.The toddlers who participated in this study were randomly assigned into PCBI group and ABA group,then they were intervened weekly by PCBI or ABA for a total of 12 weeks.Portage Early Development Checklist and autism treatment evaluation checklist (ATEC) were used to estimate the toddlers' developmental level and the treatment efficacy respectively.The t-test was used to reveal whether there was significant difference between the 2 groups before and after intervention.Results (1) Compared with the ABA group,there was a significant increase in cognitive scores (△PCBI =9.03 scores,△ABA =4.27 scores,t =3.997) and a significant decrease in social behavior scores (△PCBI =8.87 scores,△ABA =16.91 scores,t =-4.022) of the Portage Early Development Checklist after 12 weeks of intervention in the PCBI group,and there were statistically significant differences(all P ＜ 0.001);while the total score and the scores of language,movement,and self-care subscale of Portage Early Development Checklist were also increased after PCBI intervention but without significant differences (all P ＞ 0.05).(2)Compared with the ABA group,after 12 weeks of PC BI intervention,the scores of social contact,perception,behavior of ATEC were decreased,but the difference was not significant (P ＞ 0.05);the total score of ATEC scale(△PCBI total =14.89 scores,△ABA total =22.22 scores,t =2.209)and the scores of language subscale(△PCBI language =2.89 scores,△ ABA language =6.43 scores,t =2.515) were decreased significantly,and there were statistically significant differences (all P ＜ 0.05).Conclusions After 12 weeks of the very early intervention of PCBI,the ASD toddlers all improved in clinical symptoms and developmental level.Compared with ABA intervention,PCBI very early intervention with parental guidance was comparable in short term efficacy,and PCBI was not taking up as much medical rehabilitation resources as ABA.