Objective To investigate the awareness,willingness,motivation,and influencing factors of outpatients for participating drug clinical trials,and provide references for decision-making of drug clinical trials.Methods An amnonymous survey was conducted in the departments of internal medicine,surgery,gynecology,and obstetrics of a randomly selected tertiary referral center,and the results were statistically analyzed.Results A total of 1 067 available questionnaires were received.The total awareness rate of clinical trials was 31.02％,which was closely correlated with age and the degree of education.40.86％ of respondents were willing to participate in drug clinical trials.And 55.28％ of them chose yes because of the willingness to contribute to the development of medical science.People having cognition on clinical trials had more willingness to participate in drug(OR:1.361,95 ％ CI:1.042-1.777).59.14％ of the respondents refused to participate in drug clinical trials,68.62％ of whom refusing to participate mainly worried about the safety of drugs.57.37％ of the respondents comfirmed that they might change their idea if experts were involved.41.33％ were willing to accept training about clinical trials.Conclusion Investigators'overall cognition on clinical trials is closely correlated with the willingness to participate in drug clinical trials.There should propagandize drug clinical trials to make sure the improvement of drug clinical trial progress.

Objective:To observe the effect of acupuncture on the expression of mitochondrial proteome in hippocampus of senescence-accelerated mouse prone g (SAMPg) mice models with Alzheimer disease (AD),and to explore the possible protective mechanism of acupuncture on mitochondria.Methods:Sixty 6-month-old male SAMP8 mice were randomly divided into an acupuncture at acupoint group,an acupuncture at non-acupoint group and a model group,20 mice in each group.The 20 male senescence-accelerated mouse/resistance 1 (SAMR1) mice of the same age were used as a normal control group.Shenshu (BL 23),Baihui (GV 20),Xuehai (SP 10) and Geshu (BL 17) were selected for acupuncture intervention in acupuncture at acupoint group.After an 8-week intervention,mitochondrial tissues were extracted from the hippocampus.Differentially expressed proteins were identified by subcellular organelle proteomics.Western blot was used to verify the expressions of some related proteins in hippocampal mitochondria.Results:Compared with the model group,there were 13 differentially expressed protein spots in the acupuncture at acupoint group,of which,9 were up-regulated,including neurofilament light polypeptide (NFL),actin (cytoplasmic 1,database ID:ACTB),tubulin beta-2A chain (TBB2A),tropomodulin-2 (TMOD2),pyruvate dehydrogenase E1 component subunit beta (PDHE1-β),NADH-ubiquinone oxidoreductase 75 kDa subunit (database ID:NDUS1),heat shock cognate 71 kDa protein (HSC71),pyruvate dehydrogenase E1 component subunit alpha (PDHE1-α) and ATP synthase beta subunit (ATP-β);4 were down-regulated,including glial fibrillary acidic protein (GFAP),pyruvate dehydrogenase phosphatase 1 (PDP1),mitochondrial-processing peptidase subunit alpha (MMP-α) and adenosine kinase (ADK).According to the information provided in the protein database,most of the differentially expressed proteins involve the regulation of mitochondrial function and structure.The expression levels of NFL and TBB2A in the normal control group and the acupuncture at acupoint group were significantly higher than those in the acupuncture at non-acupoint group (P＜0.05).ATP-β and NDUS1 expression levels were significantly higher in the acupuncture at acupoint group than those in the acupuncture at non-acupoint group (P＜0.05);there was no significant difference between the acupuncture at non-acupoint group and the model group (P＞0.05).Conclusion:Acupuncture may achieve the potential therapeutic effect on AD by regulating the structure and functional proteins of hippocampal mitochondria.

Aim To analyze the main components of effective fractions of Inula cappa in rat plasma with UHPLC/Q-TOF/MS technology and serum pharmacochemistry theory.Methods After gavage administration with Inula cappa extracts,blood was collected from abdominal aorta,and the protein in plasma sample was precipitated by methanol.Eclipse Plus C18 RRHD (2.1 mm × 100 mm,1.8 μm) was used,with 0.1％ formic acid agueous solution (A)-0.1％ formic acid and acetonitrile (B) as the mobile phase for gradient elution,and the flow rate was 0.3 mL ·min-1 Detected at negative ion mode,and with the help of Metabolite Tools software from Bruker Corporation,components in plasma were defined.Results A total of 16 compounds were identified,including 9 prototypes and 7 metabolites.Main metabolites were isomerization,methylation,glucuronidation and recombination of caffeoylquinic acid.Conclusions Therefore,our study has comprehensively expounded Inula cappa extracts' constituents migrating to rat plasma,and provided a reference for further studies for in vivo metabolic process and effective material base of Inula cappa.

Aim To observe the absorption activity of five components of Polygonum orientale L. Flower ex-tract in Caco-2 cell monolayer. Methods The effects of different concentrations, time, temperature, pH and P-glycoprotein inhibitors on Caco-2 cells were investi-gated by UPLC-MS/MS. Results The absorption of five components of Polygonum orientale L. Flower ex-tract presented a concentration-and time-dependent manner, and the uptake of quercetin was reduced in Caco-2 cells after 90 min. There was a highest intake at 37℃,and the uptake of four components was best in acid environment except for the quercetin at pH 6 , which was best at pH5 . The uptake of quercetin and kaempferol was significantly improved after the addition of P-glycoprotein inhibitors of verapamil. Conclusions The cellular uptake mechanisms of the five compo-nents of Polygonum orientale L. Flower extract is man-inly through passive diffusion. P-glycoprotein is in-volved in the uptake of quercetin and kaempferol.

Surgery is recognized as the core treatment for colorectal liver metastasis (CRLM), while its recurrence rate remains relatively high, even for resectable CRLM. This hints that the efficacy of treatment involves not only technological factors of surgery, but also biological behavior of tumor. For resectable CRLM, neoadjuvant therapy is beneficial to eliminate the micro-metastasis, reduce postoperative recurrence rate, screen tumor biological behavior and improve prognosis. However, questions about which kind of CRLM patients fits for neoadjuvant therapy and what regimen should be used are still debatable. This paper reviews stratified management of resectable CRLM, choice of neoadjuvant regimen, especially the application value of targeted therapy, based on the latest guidelines and studies.
Colorectal Neoplasms/surgery* ; Hepatectomy ; Humans ; Liver Neoplasms/surgery* ; Neoadjuvant Therapy ; Neoplasm Recurrence, Local/surgery*

Objective To investigate the effects and mechanisms of TAR DNA-binding protein 43(TDP-43)on oxygen-glucose deprivation(OGD)-induced apoptosis in mouse atrial myocytes(HL-1 cells).Methods The in vitro cultured mouse atrial myocytes(HL-1 cells)were divided into:(1)control group and groups with different OGD treatment times(2,4,8,16 h),and cell viability was detected by CCK-8 assay,and TDP-43 protein expression level was detected by Western blotting,which was used to determine the time point of OGD induction for the subsequent study;(2)control and OGD groups,flow cytometry was used to detect apoptosis,JC-1 staining to detect mitochondrial membrane potential,chemiluminescence to detect adenosine triphosphate(ATP)relative content,microplate method to detect malondialdehyde(MDA)content,and WST-1 method to detect superoxide dismutase(SOD)content.Mouse atrial myocytes(HL-1 cells)transfected with lentivirus were divided into:(1)negative control lentiviral intervention group(NC-shRNA),TDP-43 knockdown lentiviral intervention group(TDP-43-shRNA1,TDP-43-shRNA2,TDP-43-shRNA3),and Western blotting was used to detect the TDP-43 protein expression level,and the group with the highest lentiviral knockdown efficiency was selected as the TDP-43-shRNA for subsequent experiments;(2)NC-shRNA group,TDP-43-shRNA group,OGD+NC-shRNA group,OGD+TDP-43-shRNA group,under normoxic and OGD conditions,flow cytometry was used to detect the apoptosis rate,MitoTracker staining to detect mitochondrial morphology,JC-1 staining to detect mitochondrial membrane potential,chemiluminescence to detect the relative content of ATP,flow cytometry to detect the fluorescence intensity of reactive oxygen species(ROS),microplate to detect the content of MDA,and WST-1 to detect the content of SOD.Results CCK-8 method showed that,with the prolongation of OGD time,the viability of mouse atrial myocytes(HL-1 cells)gradually decreased;Western blotting assay showed that the expression level of TDP-43 protein gradually increased,and both of them showed a strong time-dependence.Compared with control group,mouse atrial myocytes(HL-1 cells)viability was the lowest(P<0.05)and TDP-43 protein expression was the highest(P<0.05)at 16 h of OGD,accordingly,OGD 16 h was chosen as the induction time point for subsequent experiments.Compared with control group,the apoptosis rate,the fluorescence intensity ratio of mitochondrial membrane potential and the content of MDA increased,the relative content of ATP and SOD decreased in OGD group,and the differences were all statistically significant(P<0.05).Western blotting detection showed that compared with NC-shRNA group,the TDP-43-shRNA2 group had the most obvious reduction in TDP-43 protein expression level(P<0.05)and the highest knockdown efficiency,so the TDP-43-shRNA2 group was selected for subsequent experiments.The results of flow cytometry showed that under normoxic conditions,there was no significant change in the apoptosis rate in TDP-43-shRNA group compared with NC-shRNA group(P>0.05);and under OGD conditions,the apoptosis rate in OGD+TDP-43-shRNA group reduced when compared with OGD+NC-shRNA group(P<0.05).MitoTracker staining results showed that the mitochondrial morphology of TDP-43-shRNA group was intact without significant changes compared with NC-shRNA group;the mitochondria of OGD+NC-shRNA group increased in number,most of which were fragmented and scattered in distribution;compared with OGD+NC-shRNA group,the mitochondrial morphology of OGD+TDP-43-shRNA group was restored.Under normoxic conditions,there were no significant changes in mitochondrial membrane potential,relative ATP content,ROS fluorescence intensity,MDA content,and SOD content in TDP-43-shRNA group compared with NC-shRNA group(P>0.05);however,under OGD conditions,the ratio of fluorescence intensity of mitochondrial membrane potential of cells the fluorescence intensity of ROS,and the content of MDA decreased,and the relative content of ATP and the content of SOD increased in OGD+TDP-43-shRNA group compared with that of OGD+NC-shRNA group,and all of these differences was statistically significant(P<0.05).Conclusion TDP-43 exacerbates OGD-induced mitochondrial dysfunction by regulating cardiomyocyte apoptosis;therefore,knockdown of TDP-43 expression is expected to be a potential therapeutic strategy for ischemic cardiomyopathy.

To discuss the effect of deterioration on the quality of Armeniacae Semen Amarum by observing the changes of macroscopic characteristics, active components and rancidness degrees of Armeniacae Semen Amarum in deterioration process. The traditional macroscopic identification was used to observe, identify and classify the morphologic and organleptic characteristics of Armeniacae Semen Amarum. The contents of amygdalin and fatty oil(two representatives of active components) were detected by HPLC and general rule 0713 in Chinese Pharmacopoeia, respectively. Acid value and peroxide value of the samples were selected as the representative indices of different rancidness degrees, and the general rule 2303 was adopted as the method for quantitative analysis. Then principal component analysis(PCA), partial least square analysis discrimination analysis(PLS-DA) were further utilized to establish the discriminative models of samples with different rancidness degrees, and also to screen out the largest contribution factors. In sensory evaluation, Armeniacae Semen Amarum samples were divided into three groups: non-rancid, slightly-rancid, and noticeably-rancid. The color of seed coat, cotyledon and surface of noticeably-rancid samples was deepened, and the odor differed much from non-rancid samples. Average content of amygdalin and fatty oil in non-rancid samples was 4.12% and 67.77%, respectively, both meeting the requirements of Chinese Pharmacopoeia; and decreased to some extent in slightly-rancid samples. However, the content of amygdalin sharply dropped to 0.074% in noticeably-rancid samples. The acid value and peroxide value were increased significantly with the intensifying of the rancidness degree, from only 1.363 and 0.016 74 in non-rancid samples to 1.865 and 0.023 70 in slightly-rancid samples, even doubled in noticeably-rancid samples(2.167 and 0.033 82). The discriminative models established by PCA and PLS-DA could complete the task of distinguishing the non-rancid samples from noticeably-rancid ones. The contribution degree of amygdalin content as one of the input attributes of discriminative model was higher than 1. Rancidness affected the quality of Armeniacae Semen Amarum, resulting in appearance changes, decrease in content of active components, and increase in acid value and peroxide value. Obviously, noticeably-rancid samples were non-conforming to Chinese Pharmacopoeia and no longer suitable for medicinal use. Rancidness can significantly reduce the quality of Armeniacae Semen Amarum, and even could possibly produce toxicity, which should attach more attention.
Amygdalin ; Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; Semen

Humans ; Child ; Nephrotic Syndrome/drug therapy* ; Hormones

OBJECTIVE: To explore the efficacy difference of electroacupuncture at lower -sea point and -sea matching front- points for the treatment of gastroparesis. METHODS: A total of 63 patients with gastroparesis were randomly divided into a lower point group (group A, 32 cases, 2 cases dropped off) and a matching points group (group B, 31 cases, 1 case dropped off). The group A was treated with electroacupuncture at Zusanli (ST 36), and the group B was treated with electroacupuncture at Zusanli (ST 36) and Zhongwan (CV 12). Both groups were treated with continuous wave (2 Hz in frequency) for 30 min, once a day, 5 times a week for 3 weeks. The gastroparesis cardinal symptom index (GCSI) score, gastric half-emptying time (T) and the 180 min gastric residual rate of the two groups before and after treatment were observed, and the clinical effective rate was compared. RESULTS: After treatment, the total GCSI scores, T and the 180 min gastric residual rates in both groups were lower than those before treatment (<0.01), and the 180 min gastric residual rate and T in the group A were lower than those in the group B (<0.05). The total effective rate was 93.3% (28/30) in the group A, which was superior to 70.0% (21/30) in the group B (<0.05). CONCLUSION Electroacupuncture at lower -sea point and -sea matching front- points can both be used to treat gastroparesis, but electroacupuncture at Zusanli (ST 36) has a better effect. The acupoints of Zusanli (ST 36) and Zhongwan (CV 12) may have antagonistic effects.

ObjectiveSodium hyaluronate (HA) was used as the research object to modify it with phenolic acid in order to obtain the molecular structure with better antioxidant activity or even new activity. MethodsIn this study, 5 kinds of phenolic acid-sodium hyaluronate was prepared by free radical-mediated grafting method, and the grafts with the highest grafting degree were selected to optimize the synthesis conditions. Then, grafts structure and physicochemical properties were analyzed. The grafts were characterized by IR, UV, ¹H NMR, FESEM and TGA spectra. The in vitro antioxidant capacity of grafts was determined by the scavenging ability of DPPH·, ABTS⁺· and O^2-·. ResultsAmong 5 kinds of phenolic acid-sodium hyaluronate, the grafting rate of ferulic acid-sodium hyaluronate copolymer (FA-HA) was highest , which was chosen as experimental sample in the following tests. Firstly, the reaction conditions were investigated and the highest grafting rate was (16.59±0.31) mg/g at the optimal preparation conditions. Then, FA-HA structure and physicochemical properties were analyzed. Data from UV, IR, ¹H NMR analyses, TGA showed that FA were successfully grafted to HA. Compared with HA, the results of gel permeation chrematography (GPC) showed that the molecular mass distribution ofFA-HA copolymer decreased from 34.4 to 31.5 ku, but the uniformity of molecular distribution was improved. FESEM results showed that the structure of copolymer exhibited a closely connected lamellar structure with a relatively smooth surface. TGA results showed that thermal stability of FA-HA had a little decline. The antioxidant performance in vitro results showed that, during 0.25-10 g/L, FA-HA can eliminate (83.76±4.86)% DPPH·, (76.95±5.06)% ABTS⁺· and (83.08±2.51)% O^2-· respectively at 10 g/L. which were higher than that of native HA and FA. ConclusionFA and HA were successfully grafted together by free radical grafting, and the grafted FA-HA had better antioxidant activity in vitro, which provided a theoretical basis for further research and development of phenolic acid-HA grafts.