Objective:To observe the effect of the salidroside on the sleep phase of insomnia rats. Methods: Under the conditions of constant temperature,constant humidity,light automatically and electromagnetic shielding,the effect of the salidroside on the sleep phase of insomnia rats was observed with the method of the cortical EEG.Results:The results showed that salidroside can obviously decrease the duration of W and increase TST,primarily prolong SWS2 and REMS.Conclusion:Salidroside can prolong SWS2 and REMS of insomnian rats and regulate the sleep phase of insomnia rats near the normal rats.

Aim To investigate the effect of 96 h paradoxical sleep deprivation(PSD) on learning & memory ability of rats and the concomitant gene expression change in the rat hippocampus.Methods PSD model was established by Modified Multiple Platform Method(MMPM).Learning and memory ability of the PSD model was assessed through hexagonal maze compared with the control, and the gene expression in hippocampus of each group was detected by gene chip technology.After that, GO and KEGG enrichment analysis were applied to determine the changes of the gene expression in PSD model compared with the control.Results PSD affected the memory consolidation process in rats.The gene chips showed that 100 genes expressed differently in the hippocampus of PSD model compared with the control, and among them, 25 genes were up-regulated and 75 genes down-regulated.The up-regulated genes mainly involved in cell growth and differentiation, learning and memory, inflammation, oxidative stress, and biological processes such as synaptic transmission, while the down-regulated genes mainly involved in immune response, central nervous system development, synaptic transmission, metabolism, signal transduction, neurotransmitter secretion, cell apoptosis, and so on.KEGG analysis showed that genes differentially expressed mainly involved in cGMP-PKG, metabolism, NF-kappa B and Pathways in cancer, and so on.Conclusion In rats, PSD leads to memory deficit, as well as a variety of gene expression changes in hippocampus of the PSD model.

Objective:To explore the different functional connectivity of right caudate nucleus between adults with high myopia and normal vision controls.Methods:The resting-state functional magnetic resonance imaging(fMRI) data were collected from twenty-five high myopia(HM group) and twenty-seven normal vision subjects(NC group). Right caudate nucleus and their subregions(anterior and posterior subregions included) were used as seeds to perform seed-based functional connectivity (FC)analyses at group level under three different frequency bands: convention (0.010~0.080 Hz), slow-5(0.010~0.027 Hz) and slow-4(0.027~0.073 Hz).Results:(1)Compared with NC group, FC of right caudate nucleus with left middle occipital gyrus(MNI: x=-48, y=-84, z=9), left fusiform gyrus(MNI: x=-30, y=-63, z=-12), and right middle frontal gyrus(MNI: x=39, y=12, z=39) were stronger in HM group(all P<0.05, Alphasim Corrected). (2)In HM group, these changed FC were mainly detected in the anterior subregion of right caudate nucleus.(3)The increased FC of right caudate nucleus and its anterior subregion with left middle occipital in HM group were mainly reflected in the frequency band of slow-4(all P<0.05, Alphasim Corrected). Conclusion:The right caudate nucleus in adults with high myopia may play compensatory roles in visual perception and visual attention by enhancing its functional connectivity with visual and visual attentional brain areas.

Objective:To explore the value of growth differentiation factor 15 (GDF15) in the early diagnosis of acute chest pain.Methods:A total of 96 patients with acute chest pain admitted to the Emergency Department of Hainan Hospital of PLA General Hospital from January to November 2020 were retrospectively collected. The sex, age, troponin T, creatine kinase, creatine kinase isoenzyme, GDF15 and B-type natriuretic peptide of patients within 30 min after admission were recorded, and the differences of each index in different groups were compared. ROC curve was drawn to evaluate the diagnostic value of GDF15 and TNT/BNP in acute coronary syndrome (ACS). The Gensini score, left ventricular ejection fraction, length of stay in hospital and the number of stents were calculated, and the correlation between these indexes and GDF15 concentration was evaluated.Results:The general trend of acute chest pain was more male than female (72.92% vs. 27.08%) , the oldest group was the UA group (64.67 ± 13.87) years old , the youngest group was cardiac arrest group (47.29 ± 9.99) years old . There were higher rates of hypertension in the STEMI group, NSTEMI group and UA group, and none of the groups showed significant advantage in diabetes. The GDF15 concentration was higher in ACS related chest pain group [(2.360 ± 1.710) ng/mL vs. (1.380 ± 1.040) ng/mL, P<0.01]. The area under the Receiver Operating Characteristic Curve (AUC) of GDF15 combined with TNT was up to 0.863. GDF15 concentration was negatively correlated with ejection fraction, positively correlated with Gensini score, positively correlated with the number of stents implanted, and positively correlated with the length of hospital stay. Conclusions:GDF15 is valuable in the diagnosis and prognosis of acute chest pain. The combination of GDF15 and TNT can improve the diagnostic rate of ACS.

There is increasing evidence that the activation of glucagon-like peptide-1 receptor(GLP-1R)can be used as a therapeutic intervention for cognitive disorders.Here,we have screened GLP-1 R targeted com-pounds from Scutellaria baicalensis,which revealed baicalein is a potential GLP-1 R small-molecule agonist.Mitophagy,a selective autophagy pathway for mitochondrial quality control,plays a neuro-protective role in multiple cognitive impairment diseases.We noticed that Glp1r knock-out(KO)mice present cognitive impairment symptoms and appear worse in spatial learning memory and learning capacity in Morris water maze(MWM)test than their wide-type(WT)counterparts.Our mechanistic studies revealed that mitophagy is impaired in hippocampus tissue of diabetic mice and Glp1r KO mice.Finally,we verified that the cognitive improvement effects of baicalein on diabetic cognitive dysfunction occur through the enhancement of mitophagy in a GLP-1 R-dependent manner.Our findings shed light on the importance of GLP-1 R for cognitive function maintenance,and revealed the vital significance of GLP-1R for maintaining mitochondrial homeostasis.Furthermore,we identified the therapeutic potential of baicalein in the treatment of cognitive disorder associated with diabetes.

Objective To analyze the changes of antibody levels in positive patients with epidemic hemorrhagic fever(EHF) in Dongwan, and to provide effective theoretical guidance for the prevention . Methods From January 2018 to April 2022, the antibody test and general sociological characteristics, such as age, sex, occupation of 153 patients who were confirmed to be positive for serum EHF antibody by establishing infectious disease report cards were collected. Statistical analysis was performed using t test and 2test. Results Among of 153 patients , 70 were IgG positive, and the antibody positive rate was 45.75%. There was no significant difference in IgG antibody positive rate between EHF patients of different gender（χ²=0.165，P=0.685）. Commercial services (76.90%), workers (34.10%), unemployed or retired (44.10%) had the highest antibody positive rate. The IgG positive rate of EHF patients in different age groups was different. The antibody positive rate was the highest in the age group of 25-35 years old, and the antibody positive rate was lower in the age group of 60 years old and later. Among the 153 patients, the IgG antibody positive rate of the patients with onset in December, January and February was the highest, reaching 60.71% and 66.67% respectively. The IgG antibody positive rate of the patients with onset in April September was lower（ χ²=14.366，P=0.021）. Conclusion The positive rate of IgG antibody in EHF patients in Dongguan was high, which was related to occupation, age and time of onset; It is necessary to strengthen vaccination for this group of people to improve the antibody immunity level.