目的研究极早产儿存活率和严重并发症发生情况,并分析其影响因素。方法回顾性收集2018年1月至2019年12月江苏省11家医院新生儿科收治的极早产儿(胎龄<32周)的一般资料,分析其存活率和严重并发症发生情况,采用多因素logistic回归分析...目的研究极早产儿存活率和严重并发症发生情况,并分析其影响因素。方法回顾性收集2018年1月至2019年12月江苏省11家医院新生儿科收治的极早产儿(胎龄<32周)的一般资料,分析其存活率和严重并发症发生情况,采用多因素logistic回归分析评估极早产儿死亡和严重并发症发生的危险因素。结果共纳入极早产儿2339例,其中存活2010例(85.93%),无严重并发症存活1507例(64.43%)。胎龄22~25^(+6)周、26~26^(+6)周、27~27^(+6)周、28~28^(+6)周、29~29^(+6)周、30~30^(+6)周、31~31^(^(+6))周各组极早产儿存活率分别是32.5%、60.6%、68.0%、82.9%、90.1%、92.3%、94.8%,随着胎龄增加,存活率呈升高趋势(P<0.05);相同胎龄分组下无严重并发症存活率分别是7.5%、18.1%、34.5%、52.2%、66.7%、75.7%、81.8%,随着胎龄增加,无严重并发症存活率呈升高趋势(P<0.05)。多因素logistic回归分析显示,胎龄大、出生体重大、母亲产前使用糖皮质激素是极早产儿死亡的保护因素(P<0.05),而1 min Apgar评分≤3分是极早产儿死亡的危险因素(P<0.05);胎龄大、出生体重大是存活极早产儿发生严重并发症的保护因素(P<0.05),而5 min Apgar评分≤3分、母亲绒毛膜羊膜炎是存活极早产儿发生严重并发症的危险因素(P<0.05)。结论极早产儿存活率与胎龄密切相关。1 min Apgar评分≤3分可增加极早产儿死亡的风险,而胎龄大、出生体重大、母亲产前使用糖皮质激素与死亡风险降低有关。5 min Apgar评分≤3分和母亲绒毛膜羊膜炎可增加极早产儿严重并发症发生的风险,而胎龄大、出生体重大可降低严重并发症发生的风险。展开更多
The beet armyworm,Spodoptera exigua （Lepidoptera：Noctuidae）,is an economically important pest of crops worldwide,attacking plants from over 20 families including trans-continental agricultural cotton,corn and citru...The beet armyworm,Spodoptera exigua （Lepidoptera：Noctuidae）,is an economically important pest of crops worldwide,attacking plants from over 20 families including trans-continental agricultural cotton,corn and citrus crops.In this study,performance and subsequent enzyme activity of beet armyworm reared on host plants from five families were investigated.Significant differences were found in development,fecundity and enzyme activity on different host plants.Survival rate was the highest （42.8%） on asparagus lettuce （Lactuca sativar var.asparagina） and the lowest （17.0%） on sweet pepper （Capsicum annuum）.Larval duration was the shortest on asparagus lettuce （12.0 d）,and was 43.4% longer on sweet peppers （21.2 d）.The activity of acetylcholine esterase （AChE） and carboxylesterase （CarE） in 3rd instar larvae,and soluble carbohydrate and crude protein contents in different host plants were determined.AChE activity was the highest in the larvae feeding on Chinese cabbage （Brassica rapa）,but declined by nearly 60% on maize （Zea mays） seedlings.The ratio of soluble carbohydrate content to crude protein content in host plants was found to have a positive effect on oviposition and a negative correlation with larval duration and life time （from larval to adult stages） of the insect.展开更多
Aconiti Lateralis Radix Praeparata(Fuzi) is a commonly used traditional Chinese medicine in clinic for its potency in restoring yang and rescuing from collapse. Aconiti alkaloids, mainly including monoester-diterpenoi...Aconiti Lateralis Radix Praeparata(Fuzi) is a commonly used traditional Chinese medicine in clinic for its potency in restoring yang and rescuing from collapse. Aconiti alkaloids, mainly including monoester-diterpenoidaconitines(MDAs) and diester-diterpenoidaconitines(DDAs), are considered to act as both bioactive and toxic constituents. In the present study, a feasible, economical, and accurate HPLC method for simultaneous determination of six alkaloid markers using the Single Standard for Determination of Multi-Components(SSDMC) method was developed and fully validated. Benzoylmesaconine was used as the unique reference standard. This method was proven as accurate(recovery varying between 97.5%-101.8%, RSD < 3%), precise(RSD 0.63%-2.05%), and linear(R > 0.999 9) over the concentration ranges, and subsequently applied to quantitative evaluation of 62 batches of samples, among which 45 batches were from good manufacturing practice(GMP) facilities and 17 batches from the drug market. The contents were then analyzed by principal component analysis(PCA) and homogeneity test. The present study provided valuable information for improving the quality standard of Aconiti Lateralis Radix Praeparata. The developed method also has the potential in analysis of other Aconitum species, such as Aconitum carmichaelii(prepared parent root) and Aconitum kusnezoffii(prepared root).展开更多
BACKGROUND:Beijing 2022 Olympic Winter Games was the second Games held amid the COVID-19 pandemic.To a certain extent,it has altered the way sporting activities operate.There is a lack of knowledge on injury risk and ...BACKGROUND:Beijing 2022 Olympic Winter Games was the second Games held amid the COVID-19 pandemic.To a certain extent,it has altered the way sporting activities operate.There is a lack of knowledge on injury risk and illness occurrence in elite winter sport athletes amid the COVID-19 pandemic.This study aimed to describe the incidence of injuries and illnesses sustained during the XXIV Olympic Winter Games in Beijing from February 4 to 20,2022.METHODS:We recorded the daily number of injuries and illnesses among athletes reported by Beijing 2022 medical staff in the polyclinic,medical venues,and ambulance.We calculated injury and illness incidence as the number of injuries or illnesses occurring during competition or training,respectively,with incidence presented as injuries/illnesses per 100 athlete-days.RESULTS:In total,2,897 athletes from 91 nations experienced injury or illness.Beijing 2022 medical staff reported 326 injuries and 80 illnesses,equaling 11.3 injuries and 2.8 illnesses per 100 athletes over the 17-day period.Altogether,11%of the athletes incurred at least one injury and nearly 3%incurred at least one illness.The number of injured athletes was highest in the skating sports(n=104),followed by alpine skiing(n=53),ice track(n=37),freestyle skiing(n=36),and ice hockey(n=35),and was the lowest in the Nordic skiing disciplines(n=20).Of the 326 injuries,14(4.3%)led to an estimated absence from training or competition of more than 1 week.A total of 52 injured athletes were transferred to hospitals for further care.The number of athletes with illness(n=80)was the highest for skating(n=33)and Nordic skiing(n=22).A total of 50 illnesses(62.5%)were admitted to the department of dentistry/ophthalmology/otolaryngology,and the most common cause of illness was other causes,including preexisting illness and medicine(n=52,65%).CONCLUSION:Overall,11%of athletes incurred at least one injury during the Games,which is similar to the findings during the Olympic Winter Games in 2014 and 2018.Regarding illness,2%of athlet展开更多
文摘目的研究极早产儿存活率和严重并发症发生情况,并分析其影响因素。方法回顾性收集2018年1月至2019年12月江苏省11家医院新生儿科收治的极早产儿(胎龄<32周)的一般资料,分析其存活率和严重并发症发生情况,采用多因素logistic回归分析评估极早产儿死亡和严重并发症发生的危险因素。结果共纳入极早产儿2339例,其中存活2010例(85.93%),无严重并发症存活1507例(64.43%)。胎龄22~25^(+6)周、26~26^(+6)周、27~27^(+6)周、28~28^(+6)周、29~29^(+6)周、30~30^(+6)周、31~31^(^(+6))周各组极早产儿存活率分别是32.5%、60.6%、68.0%、82.9%、90.1%、92.3%、94.8%,随着胎龄增加,存活率呈升高趋势(P<0.05);相同胎龄分组下无严重并发症存活率分别是7.5%、18.1%、34.5%、52.2%、66.7%、75.7%、81.8%,随着胎龄增加,无严重并发症存活率呈升高趋势(P<0.05)。多因素logistic回归分析显示,胎龄大、出生体重大、母亲产前使用糖皮质激素是极早产儿死亡的保护因素(P<0.05),而1 min Apgar评分≤3分是极早产儿死亡的危险因素(P<0.05);胎龄大、出生体重大是存活极早产儿发生严重并发症的保护因素(P<0.05),而5 min Apgar评分≤3分、母亲绒毛膜羊膜炎是存活极早产儿发生严重并发症的危险因素(P<0.05)。结论极早产儿存活率与胎龄密切相关。1 min Apgar评分≤3分可增加极早产儿死亡的风险,而胎龄大、出生体重大、母亲产前使用糖皮质激素与死亡风险降低有关。5 min Apgar评分≤3分和母亲绒毛膜羊膜炎可增加极早产儿严重并发症发生的风险,而胎龄大、出生体重大可降低严重并发症发生的风险。
基金supported by the Chongqing Science & Technology Commission,China (2005BA1014)the Chongqing Education Commission,China (KJ060302)
文摘The beet armyworm,Spodoptera exigua （Lepidoptera：Noctuidae）,is an economically important pest of crops worldwide,attacking plants from over 20 families including trans-continental agricultural cotton,corn and citrus crops.In this study,performance and subsequent enzyme activity of beet armyworm reared on host plants from five families were investigated.Significant differences were found in development,fecundity and enzyme activity on different host plants.Survival rate was the highest （42.8%） on asparagus lettuce （Lactuca sativar var.asparagina） and the lowest （17.0%） on sweet pepper （Capsicum annuum）.Larval duration was the shortest on asparagus lettuce （12.0 d）,and was 43.4% longer on sweet peppers （21.2 d）.The activity of acetylcholine esterase （AChE） and carboxylesterase （CarE） in 3rd instar larvae,and soluble carbohydrate and crude protein contents in different host plants were determined.AChE activity was the highest in the larvae feeding on Chinese cabbage （Brassica rapa）,but declined by nearly 60% on maize （Zea mays） seedlings.The ratio of soluble carbohydrate content to crude protein content in host plants was found to have a positive effect on oviposition and a negative correlation with larval duration and life time （from larval to adult stages） of the insect.
基金financially supported by the project of Standardization of Traditional Chinese Medicines/Indigenous Drugs sponsored by Chinese Academy of Sciences(No.KSZD-EW-Z-004-01)
文摘Aconiti Lateralis Radix Praeparata(Fuzi) is a commonly used traditional Chinese medicine in clinic for its potency in restoring yang and rescuing from collapse. Aconiti alkaloids, mainly including monoester-diterpenoidaconitines(MDAs) and diester-diterpenoidaconitines(DDAs), are considered to act as both bioactive and toxic constituents. In the present study, a feasible, economical, and accurate HPLC method for simultaneous determination of six alkaloid markers using the Single Standard for Determination of Multi-Components(SSDMC) method was developed and fully validated. Benzoylmesaconine was used as the unique reference standard. This method was proven as accurate(recovery varying between 97.5%-101.8%, RSD < 3%), precise(RSD 0.63%-2.05%), and linear(R > 0.999 9) over the concentration ranges, and subsequently applied to quantitative evaluation of 62 batches of samples, among which 45 batches were from good manufacturing practice(GMP) facilities and 17 batches from the drug market. The contents were then analyzed by principal component analysis(PCA) and homogeneity test. The present study provided valuable information for improving the quality standard of Aconiti Lateralis Radix Praeparata. The developed method also has the potential in analysis of other Aconitum species, such as Aconitum carmichaelii(prepared parent root) and Aconitum kusnezoffii(prepared root).
基金This study was supported by the Beijing Municipal Science and Technology Project(Z191100004419003)Capital’s Funds for Health Improvement and Research(2022-1-3031,2022-2-3033)Beijing Public Health High-level Scholars Development Program(2022-1-001).
文摘BACKGROUND:Beijing 2022 Olympic Winter Games was the second Games held amid the COVID-19 pandemic.To a certain extent,it has altered the way sporting activities operate.There is a lack of knowledge on injury risk and illness occurrence in elite winter sport athletes amid the COVID-19 pandemic.This study aimed to describe the incidence of injuries and illnesses sustained during the XXIV Olympic Winter Games in Beijing from February 4 to 20,2022.METHODS:We recorded the daily number of injuries and illnesses among athletes reported by Beijing 2022 medical staff in the polyclinic,medical venues,and ambulance.We calculated injury and illness incidence as the number of injuries or illnesses occurring during competition or training,respectively,with incidence presented as injuries/illnesses per 100 athlete-days.RESULTS:In total,2,897 athletes from 91 nations experienced injury or illness.Beijing 2022 medical staff reported 326 injuries and 80 illnesses,equaling 11.3 injuries and 2.8 illnesses per 100 athletes over the 17-day period.Altogether,11%of the athletes incurred at least one injury and nearly 3%incurred at least one illness.The number of injured athletes was highest in the skating sports(n=104),followed by alpine skiing(n=53),ice track(n=37),freestyle skiing(n=36),and ice hockey(n=35),and was the lowest in the Nordic skiing disciplines(n=20).Of the 326 injuries,14(4.3%)led to an estimated absence from training or competition of more than 1 week.A total of 52 injured athletes were transferred to hospitals for further care.The number of athletes with illness(n=80)was the highest for skating(n=33)and Nordic skiing(n=22).A total of 50 illnesses(62.5%)were admitted to the department of dentistry/ophthalmology/otolaryngology,and the most common cause of illness was other causes,including preexisting illness and medicine(n=52,65%).CONCLUSION:Overall,11%of athletes incurred at least one injury during the Games,which is similar to the findings during the Olympic Winter Games in 2014 and 2018.Regarding illness,2%of athlet
