ObjectiveTo explore whether fluoroethylnormemantine （FENM）， an NMDA receptor antagonist， could improve compulsive-like behaviors and to investigate its underlying mechanisms in the RU24969-induced obsessive-compulsive disorder （OCD） mouse model. MethodsThirty-two mice were randomly assigned to four groups： Saline （n=8）， RU24969 （n=8）， RU+FENM （n=8）， and FENM （n=8）. Mice received FENM or an equivalent volume of saline for pre-treatment， followed by RU24969 or saline for model induction 30 minutes later. Behavioral tests were performed 1 hour after modeling， and serum samples were collected to measure the level of brain-derived neurotrophic factor （BDNF）. Evans Blue dye was intravenously injected to assess dye content in brain tissue， thereby evaluating potential blood-brain barrier damage. ResultsFENM treatment significantly improved repetitive stereotyped circling behavior （F=39.850， P＜0.001） and alleviated persistent motor activity （F=50.200， P＜0.001） in RU24969 model mice. Additionally， FENM treatment significantly increased serum BDNF level in RU24969-induced OCD mice （F=18.930， P＜0.001）. ConclusionsFENM ， an NMDA receptor antagonist， may alleviate compulsive behaviors in OCD mice by modulating BDNF levels ， thereby exerting anti-compulsive effects. Neither the RU24969 model nor FENM treatment significantly affectes blood-brain barrier integrity.

Objective: To investigate the prevalence of abnormal foot arch morphology and its associated factors among primary and secondary school students in Ganzhou City, so as to provide evidence for the prevention of such abnormalities. Methods: From November 2023 to May 2024, a questionnaire was conducted among 1 013 primary and secondary school students, who were selected from one primary school and one nine year continuous school with stratified cluster random sampling method. Professional equipment, including 2D foot scanning and plantar pressure plates, was utilized to screen pupils for abnormal foot arch morphology (including flatfoot and high arched foot). The Chi square was employed for intergroup comparisons, whilst multifactorial Logistic regression analysis was utilized to investigate the associated factors for the occurrence of foot morphological abnormality of arch among students. Results: The prevalence rate of flatfoot among primary and secondary school students at 61.1%, with bilateral cases accounting for 37.5% and unilateral cases for 23.6%; the prevalence of high arched foot was 8.0%, comprising 3.9% in both feet and 4.0% in one foot. The prevalence rates of flatfoot among boys and girls were 68.7% and 53.6% respectively. Multivariate Logistic regression analysis revealed that boys had a 1.45 times higher risk of developing flatfoot compared to girls ( OR =1.45, 95% CI = 1.05- 2.02), primary and secondary students aged 6-8 and 9-10 had 4.00, 3.81 times higher risk of flatfoot respectively compared to those aged 15-16 ( OR =4.00, 3.81, 95% CI =2.18-7.36, 2.08-6.99) (all P <0.05). Compared to girls, boys had a lower risk of developing high arched foot ( OR=0.52, 95%CI =0.28-0.95), primary and secondary students who frequently corrected their sitting and standing posture also had a lower risk of high arched foot ( OR = 0.30, 95% CI =0.10-0.88) (both P <0.05). Conclusions The prevalence of abnormal foot arch morphology among primary and secondary school students is relatively high, with exercise habits, and postural behaviour identified as associated factors. It is recommended to enhance early screening and behavioural interventions for key populations, thereby advancing the prevention and correction of foot morphological abnormality of arch.

Objective To investigate the effect of nicotine on coagulation in intestinal ischemia-reperfusion injury rats.Methods 32 male Sprague-dawley rats,weighing 250-300g,were randomly divided into 4 groups(n=8):sham operation group(S),intestinal ischemia-reperfusion(IR)group,nicotine(NIC)group,α7 nicotinic acetylcholine receptor(α7nAchR)antagonist group α-bungarotoxin(α-BGT)group.Intestinal IR was induced by clamping superior mesenteric artery for 45min and 120min of reperfusion.In group NIC nicotine 400μg/kg was injected intraperitoneally at 30min before superior mesenteric artery occlusion.In group α-BGT 1μg/kg was injected intraperitoneally at 15min before superior mesenteric artery occlusion.Plasma tumor necrosis factor-α(TNF-α),tissue factor(TF),antithrombin(AT),tissue plasminogen activator(tPA),fiber plasminogen activator inhibitor-1(PAI-1),D-dimer levels and platelet count(PLT)were measured after 120min reperfusion.Chiu's count was used to assess the changes in intestinal mucosal pathlolgical morphology.Results Compared with group S and group NIC,the plasma TNF-α,TF,tPA,PAI-1 and D-dimer levels were significantly increased,and plasma AT level and platelet count were significantly decreased,in group IR and group α-BGT(P<0.05),Chiu's scores were significantly increased(P<0.05).Conclusion Nicotine can inhibit the excessive activation of coagulation function in intestinal ischemia-reperfusion injury rats.Its mechanism may be related to activation of cholinergic antiinflammatory pathway,reducing the release of pro-inflammatory cytokines thereby reducing endothelial cell injury.

A case of Streptococcus suis sepsis and streptococcal toxic shock syndrome diagnosed by metagenomic next-generation sequencing (mNGS) was presented. A 50-year old male patient visited Zengcheng Branch of Nanfang Hospital on June 25th, 2021. The patient developed fever, dizziness and shock with typical epidemiological history. mNGS revealed Streptococcus suis in blood sample. The diagnosis of Streptococcus suis sepsis and streptococcal toxic shock syndrome were made. Meropenem was given as empirical antibiotics. Antibiotics were adjusted to meropenem and clindamycin while Streptococcus suis was detecting by mNGS and downgraded to piperacillin/tazobactam and clindamycin when symptoms improved. The diagnosis was then confirmed by blood culture. The patient developed dry gangrene and sudden deafness in the later stage and was discharged after treatment. Compared with traditional diagnostic techniques, mNGS has advantages such as timeliness and accuracy, and plays a key role in the field of severe infections and rare pathogen infections. It is suggested that combining mNGS and traditional diagnostic techniques have the advantages for early diagnosis and early treatment.

0bjective To explore the effects of narrative nursing on posttraumatic growth for patients with amputation. Methods From December 2016 to March 2018,a total of 62 hospitalized patients with amputation were randomly assigned into the control group and the intervention group by random number table.The control group received routine nursing,the intervention group received narrative nursing on the basis of control group.Two groups were evaluated by Posttraumatic Growth Inventory(PTGI) before and after intervention. Results Before intervention,the scores of reflections on life, personal strengths, new possibilities, relating to others, self-transformation and posttraumatic growth in the the control group were (19.87 ± 5.22), (7.90 ± 2.53), (8.83 ± 3.62), (9.73 ± 3.13), (10.63 ± 3.01), (56.97 ± 17.21) points, respectively. After intervention,the scores were (20.80±5.89), (8.80±2.17), (8.90±3.39), (10.27± 2.75), (11.07 ± 3.12), (59.83 ± 16.91) points, respectively, except new possibilities, the scores of each dimension and total scores of posttraumatic growth in the the control group were higher than before,the differences were statistically significant(t=3.00- 5.34, P＜0.05).Before intervention,the scores of reflections on life, personal strengths, new possibilities, relating to others, self-transformation and posttraumatic growth in the the intervention group were (20.28±4.94), (8.17±2.58), (8.59±3.48), (9.55± 2.90), (11.07±2.83), (57.66±16.42) points, respectively. After intervention, the scores were (23.79±4.70), (10.10±2.17), (10.72±3.34), (11.69±2.22), (12.79±3.28),(69.10±14.92) points, respectively, the scores of each dimension and total scores of posttraumatic growth in the intervention group were statistically higher than those in the control group and before intervention,the differences were statistically significant (t=10.61-16.75, P＜0.05). Conclusion Narrative nursing can effectively improve the level of posttraumatic growth and psychological state for patients with amputation.

Objective Assessing the detection performance of testing mycoplasma pneumonia(MP) type-specific antibodies by Chemiluminescence immunoassay(CLIA), in order to evaluate the feasibility of screening MP infection by CLIA.Methods Total of 280 cases of respiratory disease patients,20 examples infected mycoplasma pneumonia and 20 cases health volunteers as the control group were enrolled in this study from August 2016 to October 2017 in the Nanfang Hospital,Southern Medical University,testing MP antibodies by CLIA,Enzyme linked immunosorbent assay(ELISA)and Passive agglutination method(PA) respectively.According to the performance evaluation scheme, we evaluate the performance indexs of detecting MP antibodies by CLIA, including lower limit of detection, intra-batch precision, inter-batch precision,linearity range,clinical coincidence rate and consistency compared with ELISA and PA,and the results were analyzed by EXCEL and SPSS version 22.0.Results MP-IgG CLIA reagent:Limit of blank, Limit of detection and Limit of quantitation were 1.9 AU/ml,4.5 AU/ml and 5.1 AU/ml respectively;Coefficient Variation(CV)of intra-batch precision in high and low concentration levels were 2.98% and 2.45%respectively; CV of inter-batch precision in high and low concentration levels were 6.44% and 6.83% respectively;both the Linear range and Clinical report range are from 2.0 AU/ml to 253.0 AU/ml;the linear regression equation R 2≥0.990 0,0.85≤b≤1.15.MP-IgM CLIA reagent: CV of intra-batch precision in high and low concentration levels were 2.55% and 2.86% respectively; CV of inter-batch precision in high and low concentration levels were 4.82% and 5.46% respectively.The total clinical coincidence rate of MP-IgG and MP-IgM detected by CLIA were 90.0%and 97.5%respectively.The kappa values of MP-IgG and MP-IgM detected by CLIA and ELISA were 0.763(P=0.000)and 0.804(P=0.023)respectively, with Consistent percentage of 88.9% and 91.4% respectively.The kappa value of CLIA and PA was 0.541(P=0.063)with a consistent percentage of 79.6%.Conclusions The results of study show that detecting MP type-specific antibodies by CLIA meet the prescribed performance indexes. Detecting MP type-specific antibodies by CLIA,which is precise, speedy and automated, could be applied to clinical and replace ELISA and PA, becoming the prior choice in clinical for MP infection screening.

Objective To evaluate the effect of electro-acupuncture (EA) at Zusanli (ST36) acupoint on blood coagulation during intestinal ischemia-reperfusion (I/R) in rats.Methods Forty healthy male Sprague-Dawley rats,aged 6-8 months,weighing 250-300 g,were divided into 5 groups (n =8 each) using a random number table:sham operation group (group S),intestinal I/R group (group I/R),EA at Zusanli acupoint group (group EA),EA at non-acupoint group (group NE) and α7 nicotinic acetylcholine receptor antagonist α-bungarotoxin (α-BGT) group (group α-BGT).Intestinal I/R was induced by clamping the superior mesenteric artery for 4-5 min followed by 120 min of reperfusion.Bilateral Zusanli acupoints were stimulated with an electric stimulator (frequency 3 Hz,voltage 2-4 V,wave length 2 ms) for 30 min starting from the time point immediately after beginning of ischemia in group EA,while EA was performed at the points 5 mm lateral to the bilateral Zusanli instead in group NE.In group α-BGT,α-BGT 1 μg/kg was intraperitoneally injected at 45 min before ischemia,and the other treatments were similar to those previously described in group EA.Blood samples were collected from the abdominal aorta at 120 min of reperfusion for determination of the concentrations of tumor necrosis factor alpha (TNFα),tissue factor (TF),antithrombin (AT),tissue plasminogen activator (tPA),fiber plasminogen activator inhibitor-1 (PAl-l) and D-dimer in plasma (by enzyme-linked immunosorbent assay) and platelet count (PLT).The animals were sacrificed after blood sampling,the distal ileum specimens were removed for examination of the pathological changes with a light microscope,and the damage to the intestinal mucous membrane was assessed and scored according to Chin.Results Compared with group S,the concentrations of plasma TNFα,TF,tPA,PAI-1 and D-dimer were significantly increased,and the plasma AT concentration and PLT were decreased in I/R,NE and α-BGT groups,the concentrations of plasma TNFα and TF were significantly increased,and the plasma AT concentration was decreased in group EA,and Chiu's scores were significantly increased in I/R,EA,NE and α-BGT groups (P＜ 0.05).Compared with group I/R,the concentrations of plasma TNFα,TF,tPA,PAI-1 and D-dimer were significantly decreased,the plasma AT concentration and PLT were increased,and Chiu's scores were decreased in group EA (P＜0.05),and no significant change was found in the variables mentioned above in NE and α-BGT groups (P＞0.05).Compared with group EA,the concentrations of plasma TNFα,TF,tPA,PAI-1 and D-dimer were significantly increased,the plasma AT concentration and PLT were decreased,and Chiu's scores were increased in group NE (P＜0.05).Conclusion EA at Zusanli acupoint can improve blood coagulation during intestinal I/R in rats,and the mechanism is related to activating the cholinergic anti-inflammatory pathway.

Objective To observe the effect of combined continuous femoral nerve blockade (CFNB)with epidural morphine postoperative analgesia on total knee arthroplasty (TKA)in elderly patients.Methods Eighty elderly patients scheduled to undergo TKA were randomly divided into two groups:groups FN and FNM.Groups FNM and FN were received 0.1% morphine 2 ml and normal saline 2 ml through epidural space respectively at the end of surgery.After surgery,all patients were implanted catheter around femoral nerve guided by ultrasound,and were infused 0.2% ropivacaine 25 ml.Continuous infusion of 0.2% ropivacaine for femoral never block was administrated at a rate of 5 ml/h for 48 hours to all patients.VAS scores and bending degree during rest,active and passive exer-cise were recorded at time point of postoperative 24,48,72,96 h.Ambulation status on the fifth day after operation were observed.Satisfaction of hospitalization were graded before hospital discharge. Results Compared with group FN,VAS scores during rest,active and passive excercise were signifi-cantly decrease at 24 h in group FNM (P <0.05 or P <0.01).The bending degree of knee joints in group FNM were significantly greater compared with group FN at 24 h after surgery (P <0.01).Am-bulation status on the fifth day after surgery were significantly better in group FNM compared with group FN (P <0.05).The level of patient satisfaction was much higher in group FNM (P <0.05). Conclusion After TKA,CFNB combined with single epidural morphine injection can provide better analgesia and bending degree with a high level of satisfaction.

Objective To investigate the effect of two chemotherapeutic regimens suitable for elderly ad -vanced non-small cell lung cancer(NSCLC).Methods A total of 58 elderly advance nonsmall cell lung cancer pa-tients randomized into two group:single-agent group and combined group .Single-agent group received gemcitabine 1 000mg/m2 at Days 1 and 8 for a 21 day cycle.Combined group received gemcitabine 1 000mg/m2 at Days 1 and 8 in combination earboplatin AUC 5 at Day 2 for a 21 day cycle .All patients in the two groups received 3 cycles of chemotherapeutic regimens.Results Of the single-agent group,complete remission (CR) in 1 cases,partial remis-sion (PR) in 12 cases, the effective rate was 46.4%,and of the combined group,CR in 1 cases,PR in 13 cases,the effective rate was 50.0%,there was no statistically significant difference between the two groups (P>0.05).Of the single-agent group,the median survival time was 9.7 months,1-and 2-year survival rates were 31.3%,12.5%,re-spectively,and of the combined group ,the median survival time was 10.1 months,1-and 2-year survival rates were 33.8%,15.6%,respectively,there were no statistically significant difference between the two groups (χ2 =1.743, 1.529,1.739,all P>0.05).The leutropenia and thrombocytopenia incidence of 3 to 4 grade in the combined group was 50.0%,46.4%,respectively,which were significantly higher than 28.6%and 18.0%in the single-agent group (χ2 =4.41,4.69,all P<0.05).Lung Cancer Symptom Scale scores showed:after the treatment,the anorexia,fatigue and pain scores of the single-agent group improved significantly compared with pre-treatment ( t =2.687,2.789, 2.603,all P<0.05),whereas no significant improvement in the combined group;After the treatment,three symptom scores of the single-agent group were significantly higher than those of the combined group (t=2.986,3.569,2.764, all P<0.05).Conclusion Single-agent gemeitabine regimen efficacy is comparable with that of combined regimen for elderly advanced NSCLC with less adverse effects .