1.Effect of curcumin on spinal cord injury repair via inhibiting NF-κB signalling pathway:research progress
Mengdan GAO ; Jingquan LIN ; Liang TONG ; Jinyi ZHANG ; Na HAN ; Xuehong LIU
Chinese Journal of Pharmacology and Toxicology 2016;30(3):272-277
Inflammation response is the most crucial link in the pathogeneses of spinal cord injury (SCI),and is the basis of secondary damage. NF-κB Signalling pathway is activated excessively after SCI,so that numerous NF-κB possessing biological activities is quickly translocated into the nuclear and regulates the target genes,resulting in heightened inflammation and further tissue damage. Suppressing NF-κB signalling pathway and controlling inflammation response effectively are effective approaches to promoting SCI repair. It is found that curcumin has multiple target molecules to suppress NF-κB signalling pathway,block the excessive activation of NF-κB and reduce the expression of proinflammation cytokines,which plays an important role in SCI repair. This article discusses NF-κB signalling pathway,the contribution of NF-κB signalling pathway to SCI and the role of curcumins inhibition of NF-κB signalling pathway in SCI.
2.Liguzinediol exerts positive inotropic effect by enhancing Ca 2+release from sarcoplasmic reticulum mediated by sarcoplasmic reticulum Ca2+ATPase
Wei WANG ; Sha LI ; Mengdan ZHANG ; Ying GAO ; Shuyin XUE ; Kesu CHEN ; Zhongyue WANG ; Long CHEN
Chinese Journal of Pharmacology and Toxicology 2016;30(3):197-202
OBJECTIVE To explore kinetic features and its underlying mechanism of the positive inotropic effect of liguzinediol(LZDO)in rats. METHODS ①An In vivo study was made to record the effect of LZDO 20 mg · kg-1 injected for 30 consecutive min from the left external jugular vein on pressure-volume relationships. ②Ex vivo study was used to record the antagonistic effect of LZDO on reduced contractility induced by caffeine. Caffeine and LZDO were perfused as follows:normal perfusion solution, caffeine 0.5 mmol · L-1,and then caffeine 0.5 mmol · L-1+LZDO 100 μmol · L-1. ③ Ca2+ transient from cardiomyocyte sarcoplasmic reticulum (SR) was measured to analyze the effect of LZDO on Ca2 +release blocked by thapsigargin. Thapsigargin and LZDO were perfused as follows:normal perfusion solution,thapsigargin 2 μmol · L-1,and then thapsigargin 2 μmol · L-1+LZDO 100 μmol · L-1.④The SR vesicles were prepared and the effect of LZDO(1,10 and 100μmol·L-1)on sarcoplasmic reticulum Ca2+ATPase(SERCA2a)activity was determined according to the ultramicro-Ca2+-ATP enzyme kit. RESULTS ① LZDO 20 mg · kg- 1 significantly reduced the end-systolic volume (Ves) and enhanced the end-systolic pressure (Pes),stroke volume (SV),ejection fraction (EF),cardiac output(CO),peak rate of rise of left ventricular pressure(+dp/dtmax)and stroke work(SW)(P<0.05). However,LZDO 20 mg · kg-1 did not significantly change the heart rate(HR )or the end-diastolic volume (Ved). ② Caffeine 0.5 mmol · L- 1 significantly enhanced HR,left ventricular developed pressure (LVDP ),and+dp∶dtmax at 5 min after caffeine and decreased at 30 min. However,LZDO 100μmol·L-1 restored the reduced HR,LVDP,and+dp/dtmax induced by caffeine at 30 min(P<0.05).③Thapsigargin 2μmol·L-1 significantly reduced the SR Ca2+transient from perfusion solution group(100±5)%to(51± 5)%(P<0.05) and LZDO 100 μmol · L-1 failed to restore the decreased Ca2+ transient〔(49 ± 4)%〕. Normalized Ca2+transients were reduced by thapsigargin 2μmol·L-1 and thapsigargin 2μmol·L-1+LZDO 100 μmol · L-1. ④ LZDO(10 and 100 μmol · L-1)significantly increased the activities of SERCA2a in perfusion solution group 0.98±0.10 to 1.17±0.20 and (1.43±0.09)μmol Pi·g-1·h-1,respectively(P<0.05). CONCLUSION LZDO can enhance SR Ca2+ gradient by activating the SERCA2a and might be developed to serve as a potential positive inotropic agent in clinical settings.
3.Research progress of early warning assessment tools for prenatal care
Lingfang ZHANG ; Mingli ZHAO ; Xuewei ZHANG ; Mengni WANG ; Mengdan HAN
Chinese Journal of Practical Nursing 2018;34(8):633-636
Studies have shown that pregnant women due to their specificity and social factors during pregnancy, maternal mortality and postpartum serious complications were significantly higher. Taking effective measures to control maternal mortality and ensuring the safety of pregnant women is an urgent problem to be solved.The first measure to ensure the safety of pregnant women is to use appropriate assessment tools, accurate, dynamic and comprehensive risk assessment of pregnant women. At present, with the start of a comprehensive two-child policy,research related to obstetric early warning scores has become the focus of research in the field of obstetric care.Therefore,this article through the"obstetrics","maternal","risk warning","risk score"as the key word,search Wanfang database,Chinese Journal full-text database(CNKI),Chinese biomedical literature database(CBM);foreign language literature,such as PubMed,Web of Science,Springer,EBSCO and other databases,with"early warning score","risk score","risk score system","Obstetric","Obstetric care"Word for retrieval.So that to provide a comprehensive analysis of the status quo of the use of early risk assessment tools at home and abroad,and to summarize the contents of the assessment tools,and further point out the problems in the current research.
4.Proarrhythmic effect and underlying mechanism of combined use of azithromycin and Shengmai injection in guinea pigs
Ying GAO ; Mengdan ZHANG ; Sha LI ; Shuyin XUE ; Huili HUANG ; Ming XIE ; Kesu CHEN ; Fuming LIU ; Long CHEN
Chinese Journal of Pharmacology and Toxicology 2017;31(6):527-533
OBJECTIVE To explore potential proarrhythmic effect and underlying mechanism of azithromycin (AZM) and Shengmai injection (SM) used clinically.METHODS ① In vivo guinea pig ECG recordings were made to analyze effects of jugular intravenous(iv) injection of AZM [38.2 mg· kg-1,one time (clinically relevant dose,CRD)],or SM (4.6 mL· kg-1,one time CRD) or their combination.②In vitro ECG recordings were made to analyze effects of AZM,SM or AZM + SM on ECG in isolated hearts of guinea pigs.AZM [one,five and ten times (clinically relevant concentrations,CRC)] was perfused in this order:41.5 →207.5 → 415 mg· L-1 and SM (one,five and ten times CRC) in this order:5 →25 →50 mL· L-1.Also,AZM (41.5 mg· L-1,one time CRC) +SM (5 mL· L-1,one time CRC) was perfused to isolated hearts of guinea pigs.③ Enzymatically isolated cardiomyocytes from guinea pig left ventricles were perfused in this order:AZM 41.5 mg· L-1 →AZM 41.5 mg· L-1+SM 5 mL· L-1 for action potential,L-type Ca2+ and Na+ current recordings,respectively.RESULTS ① Neither AZM 38.2 mg· kg-1,nor SM 4.6 mL· kg-1 significantly changed the in vivo ECG.However,AZM 38.2 mg· kg-1 +SM 4.6 mL · kg-1 significantly reduced heart rate (P<0.05) and prolonged the P-R (P<0.05) and QRS (P<0.05) intervals.②AZM 41.5,207.5 and 415 mg· L-1 reduced heart rate (P<0.05) and prolonged the P-R (P<0.05) and QRS (P<0.05) intervals in a concentration-dependent manner.AZM 415 mg·L-1 also prolonged QTc (P<0.05) interval.SM 5,25 and 50 mL· L-1 reduced heart rate (P<0.05) and prolonged the P-R interval (P<0.05) in a concentration-dependent manner.SM had no effect on QRS or QTc intervals.Washout partially recovered the above changes.Moreover,AZM 41.5 mg· L-1 + SM 5 mg·L-1 significantly reduced heart rate (P<0.05) and prolonged the P-R (P<0.05) and QRS intervals.③ AZM 41.5 mg·L-1 did not significantly change the action potential amplitude (APA),action potential durations at 50% (APD50) and 90% (APD90) repolarization levels,or L-type Ca2+ and Na+ currents.However,AZM+SM 5 mg· L-1 significantly reduced APA (P<0.05),shortened APD50 (P<0.05) and APD90 (P<0.05) and inhibited the L-type Ca2+ (P<0.05) and Na+ (P<0.05) currents.CONCLUSION AZM and SM has potential prorrhythmic risks.The combined use might cause higher risk of arrhythmia.The underlying mechanism for proarrhythmia is mediated by inhibition of the L-type Ca2+ and Na+ currents.
5.Role of signal transduction and transcription factors STAT1 and STAT3 in the pathogenesis of hepatocellular carcinoma and liver failure
Mengdan GAO ; Yonghong ZHANG ; Yan ZHAO
Journal of Clinical Hepatology 2018;34(9):2017-2020
Hepatocellular carcinoma (HCC) and liver failure are common liver diseases in China and have extremely high incidence and mortality rates. Although there are many related studies, the detailed pathogenesis of these two diseases is still unknown. This article reviews the role of STAT1 and STAT3 phosphorylation proteins in the pathogenesis of HCC and liver failure, such as antiviral defense, acute phase response, liver injury, repair, inflammation, and transformation. A deep understanding of their role in the pathogenesis of HCC and liver failure and the development of related drugs with them as molecular targets play an important role in reducing mortality rate in clinical practice.
6. Research progress of health education on obstetrics informatization
Xuewei ZHANG ; Mingli ZHAO ; Lingfang ZHANG ; Mengdan HAN ; Mengni WANG
Chinese Journal of Practical Nursing 2018;34(19):1506-1510
Health education during pregnancy can reduce the incidence of maternal and child disease and improve their health level. As the implementation of the " universal two-child policy" and the change of the national fertility view, the number of maternal, especially the number of the advanced maternal age, is faster increase.While the health manpower in our country is short, so we need a convenient, fast and safe informationalizedway for maternal health education.This article comprehensive analyze the status of application health education about the form and content in the China and overseas,and discuss the advantages and limitations, in order to establish a scientific, effective, propagable and new model of maternity information health education, to provide experience and enlightenment for our clinical works.
7.Construction of a prenatal care information platform based on "Five-color Management"
Xuewei ZHANG ; Mingli ZHAO ; Lingfang ZHANG ; Mengdan HAN ; Mengni WANG ; Peilin JIN
Chinese Journal of Modern Nursing 2019;25(10):1212-1216
?? [Abstract]? Objective? To construct a prenatal care information platform based on "Five-color Management" to improve the health of pregnant women. Methods? From January to February 2018, we selected 152 pregnant women under perinatal care in obstetrical outpatient department and 138 medical workers in obstetrical department at three Class Ⅲ hospitals in He'nan as subjects. Platform contents and functions were determined by literature review, questionnaire survey and expert group meeting. Questionnaire survey adopted the method of convenience sampling. Results? The recovery rate of the pregnant women version and doctor-nurse version of platform content and function demands questionnaire was 97.37% and 98.57% respectively. The plan first draft was developed based on questionnaire survey. Finally, the platform set three-level management content, five color grade and eight function modules by rounds of expert group meeting. Conclusions? The prenatal care information platform has a strict construction method and highly accords with the demands of pregnant women and doctor-nurse. The platform has a strong operability which realizes the high-efficient management for pregnant women and improves the health of pregnant women.
8.A family-involved institutional care behavior scale for the elderly based on Delphi method
Mengdan HAN ; Mingli ZHAO ; Zhenxiang ZHANG ; Mengni WANG ; Peilin JIN ; Mengmeng ZHANG
Chinese Journal of Modern Nursing 2020;26(6):728-733
Objective:To develop a family-involved institutional care behavior scale for the elderly and provide a tool for assessing the status quo and level of long-term institutional care for the elderly involving the family.Methods:From December 2018 to July 2019, based on the theory of balance and responsibility sharing and the conceptual model of family participation, the dimensions and item pools of the family-involved institutional care behavior scale for the elderly were constructed through literature review, semi-structured interviews and expert group meetings. Totally 18 experts from 11 provinces and cities in China related to this field were selected, and the Delphi method was used to conduct two rounds of consultations by correspondence. The active coefficient, authoritative coefficient, Kendall's W of experts, and the coefficient of variation, the importance score of items, the full score rate were calculated. Results:In the first and second rounds of consultations by correspondence, the positive coefficients of the experts were 90% and 100%; the authority coefficient was 0.925; and the Kendall's W were 0.160 and 0.287, respectively (both P<0.01) ; the coefficients of variation were 0.10-0.31 and 0.05-0.24; the importance score of items were 3.67-4.78 and 3.78-4.97. Finally, the family-involved institutional care behavior scale for the elderly including 6 dimensions and 35 items were constructed. Conclusions:The construction of the family-involved institutional care behavior scale for the elderly is reliable and robust, which can provide a reference for further developing the content of family participation in care institutions for the elderly and improving the quality of life in the elderly.
9.Research progress on nutrition management of kidney transplantation recipients
Yan TANG ; Jinke LI ; Tao QIU ; Long ZHANG ; Mengdan SHENG ; Ling CHEN
Chinese Journal of Modern Nursing 2022;28(20):2795-2800
Kidney transplantation is the most fundamental treatment for patients with end-stage renal disease. However, due to the long-term malnutrition of the patient before transplantation, coupled with the use of stress stimulation, immunosuppressive agents, and high-dose hormones after kidney transplantation, the patient is in a hypermetabolic state, and malnutrition is aggravated. The nutrition status of patients has a significant impact on the prognosis and development of kidney transplantation. Therefore, this article reviews the current status of nutrition intervention, the assessment of malnutrition, the related factors of malnutrition, and nutrition management in kidney transplantation recipients, so as to provide a reference for the nutrition and diet management of kidney transplantation recipients.
10.Research on the necrosis target and imaging of necrotic myocardium of 131I-emodin and 131I-emodic acid
Qin WANG ; Dongjian ZHANG ; Jindian LI ; Mengdan XU ; Hong LIAO ; Zhiqi YIN ; Jian ZHANG
Journal of China Pharmaceutical University 2016;47(2):235-241
The purpose of this study was to evaluate the necrosis target and imaging potential of necrotic myocardium of 131I-emodin and 131I-emodic acid. The iodogen coating method was used to radioiodinate emodin and emodic acid with iodine-131. Mice model of muscular necrosis and rat model of myocardial infarction(MI)were established to evaluate the necrosis affinity and imaging potential of 131I-emodin and 131I-emodic acid. Mice were sacrificed at 2, 12 and 24 h after injection respectively. The radioactive uptake in major organs and necrotic muscle were calculated by a γ-counter. At 6 h after administration, SPECT/CT imaging of necrotic myocardium in rats, biodistribution detection, histopathological analysis were applied to evaluate their necrosis affinity and imaging potential. The results of biodistribution from mice demonstrated that 131I-emodin and 131I-emodic acid showed peculiar necrosis target and exhibited an obvious clearance of radioactivity from normal organs. On SPECT/CT images, relatively high uptake as a hot spot was shown in the heart of the model rat, while no obvious uptake was observed in the heart of the control rat. The radioactivity ratios of necrotic to normal myocardium of 131I-emodin and 131I-emodic acid amounted up to 9. 72 and 13. 14 by quantitative autoradiography analysis, respectively. These results suggested that 131I-emodin and 131I-emodic acid possess the necrosis target and imaging potential of necrotic myocardium.