Objective To explore the effect of Huangqi Yanghe Decoction on wound healing of diabetic foot ulcer(DFU)rats based on phosphatidylinositol 3-kinase(PI3K)/protein kinase B(AKT)/nuclear factor-κB(NF-κB)signal pathway.Methods DFU rat model was constructed,and 48 rats successfully modeled were randomly divided into the model group,the Huangqi Yanghe Decoction low(8.5 g/kg)group,the Huangqi Yanghe Decoction high(17 g/kg)dose group and the Huangqi Yanghe Decoction high dose(17 g/kg)+LY294002(PI3K/AKT pathway inhibitor,0.3 mg/kg)group.There were 12 rats in each group.Another 12 rats were selected as the control group.Rats in each group were given corresponding drug intervention for 4 weeks.After the 14th and 28th day-administration,the general state and wound changes of rats were observed,and the wound healing rate was calculated.The fasting blood glucose(FBG)level of rats was measured,and the percutaneous partial pressure of oxygen(TcpO2)of tissue around the wound was detected.Serum levels of vascular endothelial growth factor(VEGF),hypoxia inducible factor-1α(HIF-1α),C-reactive protein(CRP)and interleukin(IL)-6 were determined by enzyme linked immunosorbent assay.Histopathological changes of the wound were observed by hematoxylin-eosin staining.Immunohistochemical staining was used to measure the microvascular density of rat wound tissue.The protein expression levels of PI3K,phosphorylated PI3K(p-PI3K),AKT,phosphorylated AKT(p-AKT),NF-κB p65,phosphorylated NF-κB p65(p-NF-κB p65)and NF-κB inhibitory protein α(IκB-α)in rat wound tissue were determined by Western blot assay.Results Rats in the control group had smooth hair color,normal diet,drinking water and excretion,more active,wound healing fast,less inflammatory reaction in wound tissue,and there were more new blood vessels.Fibroblasts and collagen matrix were abundant in granulation tissue.In the model group,the fur color of rats was dull and matte,and the activity was reduced.The symptoms of polydipsia,polyphagia and polyuria were appeared in the model group,the wound color was dark,and edema and ulcer appeared in the surrounding tissue,a large number of inflammatory cells infiltrated in the wound tissue,accompanied by tissue necrosis and exudation,fewer neovascularization and fibroblasts were observed.Wound healing rate,TcpO2 in wound surrounding tissue,serum VEGF,HIF-1α,microvascular density,p-PI3K,p-AKT and IκB-α protein expression levels in wound tissue were decreased,and FBG,serum CRP,IL-6,p-NF-κB p65 protein expression in wound tissue were increased(P＜0.05).Compared with the model group,the state of rats was gradually improved in the Huangqi Yanghe Decoction low and high dose groups,and the lesion degree of wound tissue was reduced successively,wound healing rate,TcpO2 in wound surrounding tissue,serum VEGF,HIF-1α,microvascular density,p-PI3K,p-AKT and IκB-α protein expression levels in wound tissue were increased in turn(P＜0.05).The FBG,serum CRP,IL-6 and p-NF-κB p65 protein expression in wound tissue were decreased in turn(P＜0.05).LY294002 could partially reverse the therapeutic effect of high-dose Huangqi Yanghe Decoction on DFU rats(P＜0.05).Conclusion Huangqi Yanghe Decoction can regulate PI3K/AKT/NF-κB pathway,inhibit inflammatory response in DFU rats,promote angiogenesis and thus promote wound healing.

Objective To explore the relationship among life meaning,spiritual health and life practice of college students.Methods Sense of Life Meaning Scale,Spiritual Health Scale and Life Practice Scale were applied to 708 college students.Results Life meaning was positively correlated with spiritual health and life practice,and spiritual health was positively correlated with life practice (r =0.51-0.79,P＜0.01).Spiritual health played fully mediating role between life meaning and life practice (x2=287.27,df=24,GFl=0.91,RMSEA=0.12),and accounted for 87％ of the mediating role.Conclusion Spiritual health serves as a mediator in the effect of life meaning on spiritual health in college students.

Objective To investigate the influences of arctigenin(ATG)on ventricular remodeling and inflammatory reaction in chronic heart failure(CHF)rats,and to analyze its potential mecha-nism.Methods A total of 79 SD rats were randomly divided into sham operation group(n=12),and the remaining rats were inflicted with abdominal aortic coarctation to establish a rat CHF model.After modeling,60 CHF rats were randomly divided into CHF group,low and high dose ATG group(ATG-L and ATG-H groups,10 and 20 mg/kg,respectively),ATG+NC group[20 mg/kg ATG+100 μl high mobility group protein B1(HMGB1)negative control plasmid],and ATG+HMGB1 group(20 mg/kg ATG+100 pl HMGB1 overexpression plasmid),with 12 rats per group.After 4 weeks of corresponding intervention,heart function,levels of B-type brain na-triuretic peptide(BNP),N-terminal B-type brain natriuretic peptide precursor(NT-proBNP)andIL-6 and TNF-α,heart mass index(HMI)and left ventricular mass index(LVMI),pathological changes of myocardial tissue,cross-sectional area of myocardial cells and myocardial collagen vol-ume fraction(CVF)and protein expression of HMGB1/Toll-like receptor 4(TLR4)/NF-κB sig-naling pathway in left ventricular myocardial tissue were measured.Results Compared with the sham operation group,myocardial tissue HMGB1(0.42±0.05 vs 0.15±0.02)and TLR4(0.70± 0.09 vs 0.21±0.04)protein levels,and phosphorylated NF-κB p65(p-NF-κB p65)/NF-κB p65(0.73±0.09 vs 0.26±0.05)protein ratio were obviously increased in the CHF group,while the left ventricular ejection fraction(LVEF)and left ventricular short-axis fractional shortening(LVFS)were obviously decreased(P＜0.05).Myocardial tissue HMGB1(0.33±0.04、0.24±0.04 vs 0.42±0.05)and TLR4(0.56±0.06、0.41±0.05 vs 0.70±0.09)protein levels,and p-NF κB p65/NF-KB p65(0.61±0.08、0.49±0.06 vs 0.73±0.09)protein ratio were decreased,and the LVEF and LVFS were increased in the ATG-L group and ATG-H group than the CHF group(P＜0.05).Overexpression of HMGB1 obviously attenuated the inhibitory effects of ATG on HMGB1/TLR4/NF-κB signaling pathway,ventricular remodeling,and inflammatory reaction in CHF rats(P＜0.05).Conclusion ATG may suppress ventricular remodeling in CHF rats by in-hibiting HMGB1/TLR4/NF-κB signaling inflammatory pathway.

Parkinson's disease (PD) is a neurodegenerative disease with motor symptoms as the main manifestation. It often starts from one side, and the motor symptoms of different sides are different in the speed of disease development, types of non-motor symptoms and treatment response. This paper focuses on the clinical characteristics, potential mechanisms, imaging manifestations and treatment differences of lateralization of motor symptoms in PD to provide some help for the clinical diagnoses and treatments of PD.

Objective To investigate the effect of prunella vulgaris extract on inflammation,macrophage phenotype,and phagocytic ability in septic mice,and analyze whether Toll like receptor 4(TLR4)/nuclear factor-κB(NF-κB)signaling pathway involved in its mechanism.Methods C57BL/6 mice were divided into the control group,the model group and the prunella vulgaris extract low(25 mg/kg),medium(50 mg/kg)and high(100 mg/kg)dose groups.Except for the control group,all other groups of mice were injected intraperitoneally with lipopolysaccharide(LPS)to prepare sepsis model.Each group was given corresponding medication by gavage.After 24 hours of administration,serum tumor necrosis factor-α(TNF-α),interleukin(IL)-1β,high mobility group protein B1(HMGB1),IL-10 levels,the proportion of M1 type(CD11b+F4/80+)and M2 type(CD206+F4/80+)macrophages in peritoneal macrophages,the phagocytotic capacity of macrophages,the expression of inducible nitric oxide synthase(iNOS)messenger RNA(mRNA)and arginase 1(Arg1)mRNA in peritoneal macrophages and expression levels of TLR4,NF-κB p65 and their phosphorylated proteins in macrophages were detected.Results Compared with the control group,serum TNF-α,IL-1β,HMGB1,proportion of M1 type macrophages in abdominal cavity,mean fluorescence intensity and phagocytotic capacity of macrophages,iNOS mRNA,TLR4,phosphorylated NF-κB p65(p-NF-κB p65)/NF-κB p65 protein expression were increased in the model group(P＜0.05).IL-10,proportion of M2 type macrophages and Arg1 mRNA expression were decreased(P＜0.05).Compared with the model group,serum TNF-α,IL-1β,HMGB1,proportion of M1 type macrophages in abdominal cavity,iNOS mRNA,TLR4,p-NF-κB p65/NF-κB p65 protein expression were decreased successively in the prunella vulgaris extract low,medium and high dose groups(P＜0.05).IL-10,proportion of M2 macrophages,mean fluorescence intensity and phagocytotic capacity of macrophages and Arg1 mRNA expression were increased successively(P＜0.05).Conclusion By inhibiting TLR4/NF-κB pathway,prunella vulgaris extract may inhibit the polarization of peritoneal macrophages into M1 type and promote their polarization to M2 type,enhance macrophage phagocytic ability and alleviate LPS induced inflammatory response in septic mice.

Gamma-aminobutyric acid(GABA)is a widely distributed non-protein amino acid.As an inhibitory neurotransmit-ter,GABA plays an important role in negative regulatory process of vertebrate nervous system,which is essential for maintaining the balance of neuronal stimulation and inhibition.With continued exploration,it was found that GABA in immune system and immune cell development can not be ignored.T cells are important components of lymphocytes and the immune system,and participate in the body's cellular immune response to prevent infection and tumor formation.Evidence in recent years showed that GABA can inhibit T cell activation and proliferation,involve in the development of tumor,diabetes and autoimmune diseases.The development of drugs targeting specific diseases is still far away due to structural heterogeneity of GABA-A receptors.In this review,we will review advances in GABA metabolism,mechanism of action for T cells and its relevance with human diseases.

Stroke is one of the most important diseases in the world with high mortality and disability rate. Acute ischemic stroke (AIS) is more than 80% in total. At present, the main treatments for AIS include intravenous thrombolysis and endovascular mechanical thrombectomy. Cognitive impairment is a common or potentially disabling effect of stroke, but the optimal treatment of post-stroke cognitive impairment remains controversial. This article reviews the effects of treatments for acute ischemic stroke on cognitive function.

Objective To investigate the impact of usnic acid on neuronal necroptosis in rats with cerebral infarction by regulating the receptor-interacting protein kinase 1(RIPK1)/receptor-interacting protein kinase 3(RIPK3)/mixed lineage kinase domain-like protein(MLKL)signaling pathway.Methods The rat model of cerebral infarction was established by middle cerebral artery occlusion and reperfusion(MCAO/R).The successfully modeled rats were divided into model group,NEC-1(RIP1 inhibitor)group,low-,medium-,and high-dose of usnic acid groups,with 20 rats in each group.Another 20 rats were selected as a sham-operation group.After 3 days of drug intervention,the modified Neurological Severity Scale(mNSS)was applied to evaluate the degree of neurological damage of rats in each group.TTC staining was applied to detect the volume of cerebral infarction.HE staining was selected to observe pathological damage in brain tissue.PI/NeuN staining was selected to observe neuronal necrosis.RT-qPCR was used to detect mRNA levels of RIPK1,RIPK3 and MLKL in rat ischemic brain tissue.Western Blot was used to determine the expressions of RIPK1/RIPK3/MLKL signaling pathway related proteins in rat ischemic brain tissue.Results Compared with the sham-operation group,the neural cells in the model group showed structural damage,cell disrupted,deformation,and nuclear pyknosis,furthermore,the mNSS score,the cerebral infarction volume,proportion of PI-positive neurons were significantly increased(P＜0.05).The mRNA levels of RIPK1,RIPK3,MLKL in brain tissue,ratio of p-RIPK1/RIPK1,and the levels of RIPK3 and MLKL proteins were obviously increased(P＜0.05).Compared with the model group,the damage degree of neurocyte morphology in the low-,medium-,and high-dose of usnic acid groups was gradually alleviated,the nuclear membrane was gradually became clear,and the cell body was gradually returned to normal.The neurocyte morphology in the NEC-1 group was basically intact,and the nuclear membrane was basically clear.The mNSS score,cerebral infarction volume and proportion of PI-positive neurons in NEC-1 group and usnic acid groups were significantly decreased(P＜0.05).The mRNA levels of RIPK1,RIPK3,MLKL,ratio of p-RIPK1/RIPK1,and levels of RIPK3 and MLKL proteins in brain tissue were obviously reduced in usnic acid groups and NEC-1 group.Also,there was dose-dependent decrease in usnic acid groups(P＜0.05).No statistically obvious difference was found between the high-dose usnic acid group and the NEC-1 group(P＞0.05).Conclusion Usnic acid inhibits neuronal necroptosis in rats with cerebral infarction by inhibiting the RIPK1/RIPK3/MLKL signaling pathway,thereby alleviating brain injury in rats with cerebral infarction.

Objective:To investigate the effect of lycopene on blood-brain barrier and nerve damage in rats with cerebral small vessel disease(CSVD)by regulating Janus kinase 2(JAK2)/signal transducer and activator of transcription 3(STAT3)/vascular endo-thelial growth factor(VEGF)signaling pathway.Methods:Fifty CSVD rat models were prepared by in vitro injection of the same germ-line microemboli,and were randomly grouped into model group,low-dose lycopene(65 mg/kg)group,high-dose lycopene(85 mg/kg)group,AG490(JAK2 inhibitor,3.5 mg/kg)group,and high-dose lycopene(85 mg/kg)+AG490(3.5 mg/kg)group,with 10 cases in each group,another 10 SD rats were regarded as sham operation group.After grouping with lycopene and AG490,cognitive ability of rats was detected by Morris water maze test and dark avoidance test;permeability of blood-brain barrier in rats was detected by Evans blue method;the number of rat hippocampal neurons was detected by Nissl staining;levels of inflammatory factors prostaglandin E2(PGE2),tumor necrosis factor-α(TNF-α),and oxidative stress factors catalase(CAT),superoxide dismutase(SOD),malondialde-hyde(MDA)in rats brain tissue were detected by kits;expressions of matrix metalloproteinase(MMP)2,MMP9,tight junction-related proteins(ZO-1,Occludin)and JAK2/STAT3/VEGF pathway-related proteins in rats brain were detected by Western blotting.Results:Compared with sham operation group,the times of rats crossing the platform,the time of staying in the target quadrant,step through latency,the number of hippocampal neurons,levels of CAT and SOD in brain tissue,protein expressions of ZO-1,Occludin and VEGF,and p-JAK2/JAK2,p-STAT3/STAT3 were obviously decreased in model group(P<0.05),while the error times,Evans blue content,levels of brain tissue PGE2,TNF-α and MDA,and protein expressions of MMP2 and MMP9 were obviously increased(P<0.05).Compared with model group,the times of rats crossing the platform,the time of staying in the target quadrant,step through la-tency,the number of hippocampal neurons,levels of CAT and SOD in brain tissue,protein expressions of ZO-1,Occludin and VEGF,and p-JAK2/JAK2,p-STAT3/STAT3 were all increased in low-dose lycopene group and high-dose lycopene group(P<0.05),while the error times,Evans blue content,levels of brain tissue PGE2,TNF-α and MDA,and protein expressions of MMP2 and MMP9 were all decreased(P<0.05),and high dose lycopene was more effective;the change trend of each index in AG490 group was opposite to that in lycopene groups,and AG490 could reverse the effect of lycopene.Conclusion:Lycopene can inhibit inflammation and oxidative stress in CSVD rats by activating JAK2/STAT3/VEGF signaling pathway,thereby reducing the blood-brain barrier and nerve damage,and improving their cognitive ability.

Objective:To investigate the effects of online learning on children's vision. Methods We collected the vision data of children from the Huainan area recorded during December 1-31, 2019 (before online learning) and from December 31, 2020 to January 31, 2021 (after online learning) in Affiliated Ophthalmic Hospital of Anhui University of Science and Technology. These data were divided into three groups according to different age brackets: primary school (6-12 years, n = 1 124), middle school group (> 12-15 years, n = 552), and junior high group (> 15-18 years, n = 554). The change in vision after online learning relative to before online learning was analyzed using SPSS 22.0 software. Results Before online learning, the overall incidence of myopia was 52.70%, the incidence of myopia was 25.31% for 6-12 years old, 71.89% for > 12-15 years old, and 88.34% for > 15-18 years old. After online learning, the overall incidence of myopia was 62.40%, the incidence of myopia was 40.25% for 6-12 years old, 78.60% for > 12-15 years old, and 91.88% for > 15-18 years old. There were significant differences in the prevalence of myopia in each age bracket between before and after online learning ( χ2 = 21.44, P < 0.001). Conclusion Online learning greatly affects the vision of adolescents. Corresponding measures should be formulated to strengthen the prevention and control of myopia in children.