Objective:To compare the efficacies of endovascular therapy (EVT) and standard medical therapy in acute ischemic stroke (AIS) patients aged ≥85 years, and analyze the independent influencing factors for poor prognosis of AIS patients after EVT.Methods:Sixty-nine AIS patients aged ≥85 years admitted to Department of Neurology, Xi'an Third Hospital from January 2018 to April 2024, including 40 accepted EVT and 28 accepted standard medicinal therapy, were enrolled. Modified Rankin scale (mRS) was used to evaluate the prognosis of the patients 90 days after onset. General data, prognosis and complications between the EVT group and standard medical therapy group were compared. General data, treatment processes and complications between patients with good prognosis and poor prognosis in the EVT group were compared. Multivariate Logistic regression was used to analyze the independent influencing factors for poor prognosis in AIS patients after EVT.Results:Compared with the standard medical therapy, the EVT group had significantly lower NIHSS score at discharge, greater improvement in NIHSS score (NIHSS score at admission-NIHSS score at discharge), lower mRS score 90 days after onset, higher good prognosis rate, lower mortality rate within 90 days of onset, and longer hospital stay ( P<0.05). In the EVT group, 11 patients (27.5%) had good prognosis and 29 patients (72.5%) had poor prognosis 90 days after onset. Compared with the good prognosis group, the poor prognosis group had significantly higher blood glucose level and lower Alberta Stroke Program Early CT Score (ASPECT) on admission ( P<0.05). Multivariate Logistic regression analysis showed that blood glucose on admission ( OR=2.363, 95% CI: 1.134-4.928, P=0.022) and ASPECT score on admission ( OR=0.273, 95% CI: 0.088-0.854, P=0.026) were independent influencing factors for poor prognosis in AIS patients after EVT. Conclusion:AIS patients aged ≥85 years received EVT have better prognosis compared with those accepted standard medical therapy; these patients with high glucose level and low ASPECT score on admission have poor prognosis.

Objective:To investigate the effects of Comprehensive Geriatric Assessment(CGA)-guided multidisciplinary interventions on frail non-dialysis elderly patients with chronic kidney disease, while also assessing the influence of different levels of frailty.Methods:This study is a randomized controlled trial conducted between 2020 and 2021, involving 230 frail, non-dialysis elderly patients with chronic kidney disease stages 3-5, treated at our hospital.Participants were randomly assigned to either an intervention group or a control group using a random number table method, with 115 patients in each group.The intervention group received multidisciplinary treatment over a period of 12 months, while the control group received standard care.We compared Fried frailty scores, re-hospitalization rates, and all-cause mortality between the two groups, and documented changes in CGA both before treatment and 12 months after treatment.Results:After 12 months of treatment, the Fried frail phenotype score was significantly lower in the intervention group(2.7±1.2)compared to the control group(3.6±1.8, t=97.47, P<0.01).Additionally, grip strength in the intervention group was higher(20.6±8.5 kg)than in the control group(13.5±8.1 kg, t=6.57, P<0.01).The scores for the Mini Nutritional Assessment-Short Form(MNA-SF)(10.7±4.0 vs.9.1±4.2, t=29.03, P<0.01), Mini-Mental State Examination Scale(MMSE)(24.3±8.6 vs.19.3±9.6, t=96.35, P<0.01), and Short Physical Performance Battery(SPPB)(6.8±3.2 vs.3.5±2.9, t=71.97, P<0.01)were also significantly higher in the intervention group.Furthermore, the Activity of Daily Living(ADL)score was greater in the intervention group(5.4±1.6)than in the control group(3.9±1.6, t=5.75, P<0.01), as was weight(67.2±11.2 kg vs.64.0±11.8 kg, t=2.02, P=0.045).The frailty reversal rate was significantly higher in the intervention group(32.2% vs.8.0%, χ2=21.4, P<0.01), and the all-cause mortality rate was lower in this group(11.3% vs.22.6%, χ2=5.22, P=0.022).However, there were no significant differences observed in the Geriatric Depression Scale(GDS)(6.3±3.7 vs.6.0±4.3, t=24.29, P>0.05), estimated Glomerular Filtration Rate(eGFR)[(44.1±19.2)ml·(min·1.73m 2) -1vs.(39.8±19.0)ml·(min·1.73m 2) -1, t=1.76, P>0.05], Instrumental Activity of Daily Living(IADL)(5.2±2.2 vs.4.6±2.2, t=1.49, P>0.05), and the rate of readmission(25.2% vs.36.5%, χ2=3.44, P>0.05). Conclusions:Multidisciplinary interventions derived from a comprehensive geriatric assessment can ameliorate or even reverse frailty, reduce all-cause mortality, and enhance the prognosis of frail elderly patients with chronic kidney disease stages 3 to 5 who are not undergoing dialysis.

Objective This study aimed to investigate the effects of sleep interruption(SI)cycles on emotional behavior in ICR mice,and to establish a mouse model of comorbid anxiety and depression induced by SI.Methods Seventy-two male ICR mice(4～5 weeks old)were divided randomly into a blank group and a model group.Mice in the model group were subjected to SI stress modeling for 1,2,and 3 weeks,respectively.After modeling,emotional behaviors were evaluated using open-field,elevated plus maze,light-dark box,marble-burying,and forced-swimming tests.Serum corticosterone levels were detected by enzyme-linked immunosorbent assay.Results Mice in the model group buried significantly more marbles after 1 week of SI stress,compared with the blank group(P＜0.05).After 2 weeks of stress,mice in the model group also showed a significant decrease in the number of crossings in the light-dark box(P＜0.05)and a significant increase in the number of marbles buried(P＜0.01)compared with the control group.After 3 weeks of stress,mice in the model group showed a significant increase in the number of marbles buried(P＜0.05),a significant decrease in the number of crossings in the light-dark box(P＜0.05),and a significant increase in immobility time in the forced-swim test(P＜0.01).Conclusions ICR mice exhibited significant anxiety-related behaviors after 2 weeks of SI modeling and significant anxiety-and depressive-related behavioral changes after 3 weeks.Three weeks of SI stress can be used to establish a model of comorbid anxiety and depression.

Objective This study aimed to investigate the effects of sleep interruption(SI)cycles on emotional behavior in ICR mice,and to establish a mouse model of comorbid anxiety and depression induced by SI.Methods Seventy-two male ICR mice(4～5 weeks old)were divided randomly into a blank group and a model group.Mice in the model group were subjected to SI stress modeling for 1,2,and 3 weeks,respectively.After modeling,emotional behaviors were evaluated using open-field,elevated plus maze,light-dark box,marble-burying,and forced-swimming tests.Serum corticosterone levels were detected by enzyme-linked immunosorbent assay.Results Mice in the model group buried significantly more marbles after 1 week of SI stress,compared with the blank group(P＜0.05).After 2 weeks of stress,mice in the model group also showed a significant decrease in the number of crossings in the light-dark box(P＜0.05)and a significant increase in the number of marbles buried(P＜0.01)compared with the control group.After 3 weeks of stress,mice in the model group showed a significant increase in the number of marbles buried(P＜0.05),a significant decrease in the number of crossings in the light-dark box(P＜0.05),and a significant increase in immobility time in the forced-swim test(P＜0.01).Conclusions ICR mice exhibited significant anxiety-related behaviors after 2 weeks of SI modeling and significant anxiety-and depressive-related behavioral changes after 3 weeks.Three weeks of SI stress can be used to establish a model of comorbid anxiety and depression.

Objective:To investigate the effects of Comprehensive Geriatric Assessment(CGA)-guided multidisciplinary interventions on frail non-dialysis elderly patients with chronic kidney disease, while also assessing the influence of different levels of frailty.Methods:This study is a randomized controlled trial conducted between 2020 and 2021, involving 230 frail, non-dialysis elderly patients with chronic kidney disease stages 3-5, treated at our hospital.Participants were randomly assigned to either an intervention group or a control group using a random number table method, with 115 patients in each group.The intervention group received multidisciplinary treatment over a period of 12 months, while the control group received standard care.We compared Fried frailty scores, re-hospitalization rates, and all-cause mortality between the two groups, and documented changes in CGA both before treatment and 12 months after treatment.Results:After 12 months of treatment, the Fried frail phenotype score was significantly lower in the intervention group(2.7±1.2)compared to the control group(3.6±1.8, t=97.47, P<0.01).Additionally, grip strength in the intervention group was higher(20.6±8.5 kg)than in the control group(13.5±8.1 kg, t=6.57, P<0.01).The scores for the Mini Nutritional Assessment-Short Form(MNA-SF)(10.7±4.0 vs.9.1±4.2, t=29.03, P<0.01), Mini-Mental State Examination Scale(MMSE)(24.3±8.6 vs.19.3±9.6, t=96.35, P<0.01), and Short Physical Performance Battery(SPPB)(6.8±3.2 vs.3.5±2.9, t=71.97, P<0.01)were also significantly higher in the intervention group.Furthermore, the Activity of Daily Living(ADL)score was greater in the intervention group(5.4±1.6)than in the control group(3.9±1.6, t=5.75, P<0.01), as was weight(67.2±11.2 kg vs.64.0±11.8 kg, t=2.02, P=0.045).The frailty reversal rate was significantly higher in the intervention group(32.2% vs.8.0%, χ2=21.4, P<0.01), and the all-cause mortality rate was lower in this group(11.3% vs.22.6%, χ2=5.22, P=0.022).However, there were no significant differences observed in the Geriatric Depression Scale(GDS)(6.3±3.7 vs.6.0±4.3, t=24.29, P>0.05), estimated Glomerular Filtration Rate(eGFR)[(44.1±19.2)ml·(min·1.73m 2) -1vs.(39.8±19.0)ml·(min·1.73m 2) -1, t=1.76, P>0.05], Instrumental Activity of Daily Living(IADL)(5.2±2.2 vs.4.6±2.2, t=1.49, P>0.05), and the rate of readmission(25.2% vs.36.5%, χ2=3.44, P>0.05). Conclusions:Multidisciplinary interventions derived from a comprehensive geriatric assessment can ameliorate or even reverse frailty, reduce all-cause mortality, and enhance the prognosis of frail elderly patients with chronic kidney disease stages 3 to 5 who are not undergoing dialysis.

Objective:To compare the efficacies of endovascular therapy (EVT) and standard medical therapy in acute ischemic stroke (AIS) patients aged ≥85 years, and analyze the independent influencing factors for poor prognosis of AIS patients after EVT.Methods:Sixty-nine AIS patients aged ≥85 years admitted to Department of Neurology, Xi'an Third Hospital from January 2018 to April 2024, including 40 accepted EVT and 28 accepted standard medicinal therapy, were enrolled. Modified Rankin scale (mRS) was used to evaluate the prognosis of the patients 90 days after onset. General data, prognosis and complications between the EVT group and standard medical therapy group were compared. General data, treatment processes and complications between patients with good prognosis and poor prognosis in the EVT group were compared. Multivariate Logistic regression was used to analyze the independent influencing factors for poor prognosis in AIS patients after EVT.Results:Compared with the standard medical therapy, the EVT group had significantly lower NIHSS score at discharge, greater improvement in NIHSS score (NIHSS score at admission-NIHSS score at discharge), lower mRS score 90 days after onset, higher good prognosis rate, lower mortality rate within 90 days of onset, and longer hospital stay ( P<0.05). In the EVT group, 11 patients (27.5%) had good prognosis and 29 patients (72.5%) had poor prognosis 90 days after onset. Compared with the good prognosis group, the poor prognosis group had significantly higher blood glucose level and lower Alberta Stroke Program Early CT Score (ASPECT) on admission ( P<0.05). Multivariate Logistic regression analysis showed that blood glucose on admission ( OR=2.363, 95% CI: 1.134-4.928, P=0.022) and ASPECT score on admission ( OR=0.273, 95% CI: 0.088-0.854, P=0.026) were independent influencing factors for poor prognosis in AIS patients after EVT. Conclusion:AIS patients aged ≥85 years received EVT have better prognosis compared with those accepted standard medical therapy; these patients with high glucose level and low ASPECT score on admission have poor prognosis.

BACKGROUND:In recent years,with the development of biological scaffold materials and bioprinting technology,tissue-engineered bone has become a research hotspot in bone defect repair. OBJECTIVE:To summarize the current treatment methods for bone defects,summarize the biomaterials and bioprinting technology for preparing tissue-engineered bone scaffolds,and explore the application of biomaterials and printing technology in tissue engineering and the current challenges. METHODS:Search terms were"bone defect,tissue engineering,biomaterials,3D printing technology,4D printing technology,bioprinting,biological scaffold,bone repair"in Chinese and English.Relevant documents published from January 1,2009 to December 1,2022 were retrieved on CNKI,PubMed and Web of Science databases.After being screened by the first author,high-quality references were added.A total of 93 articles were included for review. RESULTS AND CONCLUSION:The main treatment methods for bone defects include bone transplantation,membrane-guided regeneration,gene therapy,bone tissue engineering,etc.The best treatment method is still uncertain.Bone tissue engineering technology is a new technology for the treatment of bone defects.It has become the focus of current research by constructing three-dimensional structures that can promote the proliferation and differentiation of osteoblasts and enhance the ability of bone formation.Biological scaffold materials are diverse,with their characteristics,advantages and disadvantages.A single biological material cannot meet the demand for tissue-engineered bone for the scaffold.Usually,multiple materials are combined to complement each other,which is to meet the demand for mechanical properties while taking into account the biological properties of the scaffold.Bioprinting technology can adjust the pore of the scaffold,build a complex spatial structure,and is more conducive to cell adhesion,proliferation and differentiation.The emerging 4D printing technology introduces"time"as the fourth dimension to make the prepared scaffold dynamic.With the synchronous development of smart materials,4D printing technology provides the possibility of efficient repair of bone defects in the future.

Background The incidence rate of missed abortion is increasing year by year, but the etiology has not been fully elucidated. Adverse pregnancy history and exposure to polycyclic aromatic hydrocarbons (PAHs) may increase the risk of missed abortion. Objective To investigate the interaction between adverse pregnancy history and PAHs exposure on missed abortion in early pregnancy, and to provide evidence for the etiologic research of missed abortion. Methods A total of 114 pregnant women diagnosed with missed abortion in the Department of Obstetrics of the First Hospital of Shanxi Medical University from March to December 2019 were selected as the case group, and 139 pregnant women who visited the same hospital for voluntary induced abortion in the same period as the control group, to collect basic information and medical information of abortion, stillbirth, intrauterine growth retardation, and other adverse pregnancy history. Abortion villus tissues were collected to detect PAH-DNA adducts levels, stratified by pregnancy and adverse pregnancy history and grouped by quartile method: Q₁ (< 404.61 ng·L⁻¹), Q₂ (404.61−453.75 ng·L⁻¹), Q₃ (453.76−506.72 ng·L⁻¹), and Q₄ (≥506.73 ng·L⁻¹). SPSS 25.0 statistical software was used for χ² test and multiple logistic regression, and additive and multiplicative models were used to investigate the interaction between adverse pregnancy history and PAH-DNA adducts level on missed abortion. The PAH-DNA adducts were grouped by tertiles and quartiles, and P₃₃, P₅₀, P₆₇ and P₇₅ were used as data cut points for sensitivity analysis. Results The proportion of adverse pregnancy history in the case group (32.46%) was higher than that in the control group (12.23%) (P < 0.001). Among 160 subjects with≥2 pregnancies, the proportion of adverse pregnancy history in the case group (57.81%) was higher than that in the control group (17.71%) (P < 0.001). The results of χ² test stratified by pregnancy for different PAH-DNA adducts levels between the two groups showed that the PAH-DNA adducts level was associated with missed abortion in subjects with≥2 pregnancies (χ²=10.14, P=0.017). Being further stratified by adverse pregnancy history, the PAH-DNA adducts level in subjects with no adverse pregnancy history was associated with missed abortion (χ²=9.70, P=0.021). The results of logistic regression analysis showed that adverse pregnancy history (OR=5.88, 95%CI: 2.79−12.39) and PAH-DNA adducts (OR=3.01, 95%CI: 1.22−7.40) increased the risk of missed abortion, but no interaction between them was found. The relative excess risk of interaction (RERI), the attributable percentage of interaction (AP), and the synergy index (SI) and its 95%CI were 0.60 (95%CI: −0.58−1.77), 0.74 (95%CI: −0.83−2.30), and 0.20 (95%CI: 0.01−5.43), respectively. Conclusions Adverse pregnancy history and PAH-DNA adducts in pregnant women may increase the risk of missed abortion. The effect of the interaction between them on the occurrence of missed abortion is not supported by the current study.

Objective:To investigate the prevalence of frailty in elderly patients with stage 3-5 non-dialysis chronic kidney disease(ND-CKD)and to analyze its related factors.Methods:A cross-sectional study was conducted.Patients ≥65 years old with stage 3-5 CKD who had never undergone dialysis in the nephrology department and the internal medicine department of our hospital between October 2017 to September 2018 were enrolled.Patients were divided into the non-frail group and the frail group according to the Fried frailty phenotype.Clinical data and laboratory results were collected and comprehensive geriatric assessment was carried out to evaluate participants' medication, comorbidities, daily living ability, nutritional status, depression, cognitive and physical performance.The relevant factors for frailty were analyzed.Results:A total of 193 elderly patients with stage 3-5 ND-CKD were enrolled, 106 male and 87 female, including 68 outpatients and 125 inpatients, with a median age of 79.00(73.00, 85.00)years.There were 143 frailty patients(74.1%), including 41 outpatients and 102 inpatients, accounting for 60.3% and 81.6% of the eligible outpatients and inpatients respectively.Multivariable Logistic regression analysis showed that CKD stage( OR=9.74, 95% CI: 1.12-84.54)and polypharmacy( OR=3.69, 95% CI: 1.09-12.42)were associated with frailty in outpatients, and CKD stage( OR=11.75, 95% CI: 1.38-99.99)and malnourishment or risk of malnutrition( OR=4.22, 95% CI: 1.40-12.74)were correlated with frailty in inpatients. Conclusions:The prevalence of frailty is high in elderly patients with stage 3-5 ND-CKD.CKD stage, polypharmacy and malnourishment or the risk of malnutrition are closely correlated with frailty.

With the population aging, the prevalence of chronic kidney disease(CKD)is increasing.Frailty is a complex syndrome in the elderly.Elderly CKD patients have higher risks of frailty and cognitive impairment than the general elderly population.In recent years, the relationship between frailty and cognition has gradually attracted the attention of researchers at home and abroad.Cognitive frailty is regarded as a subtype of frailty and has become one of the research hotspots in the field of gerontology.However, there are few studies on the relationship between CKD and cognitive frailty in the elderly.This article reviews research progress on the topic, including the epidemiology, evaluation methods and possible pathogenesis of cognitive frailty in elderly CKD patients.