The adhesion of cells to each other and to the proteins of the extracellular matrix provides a stable environment for cell growth, differentiation and migration. This is a prerequisite for the normal function of the cardiovascular system. Thus the abnormal adhesion function may play a key role in the pathogenesis and development of cardiovascular diseases. To date, there are six main groups of adhesion molecule, and integrins family are the largest and most broadly distributed of the families of cellular adhesion receptors. They have an important role in several aspects of cardiovascular diseases and that its regulated inhibition leads to a reduction in incidence and mortality due to these disorders. This review focuses upon the structure、mechanism and their roles in cardiovascular diseases which maybe facilitate the development of novel therapies.

Objective To determine oleanolic acid(OA)and ursolic acid(UA)from Fructus Ligustri Lucidi in diffrernt habitat and various growing stages.Method We picked the fruits of Fructus Ligustri Lucidi in Otober in five cities of Shanxi,and in August,September,October,November and December in Xi'an.Removed impurities and storaged the fruits under room temperature.By HPLC with Waters 600 as its chromatographic system,and Lichrospher C_(18)(4.6mmx250mm,5?m) column was applied with CH_3CN-CH_3OH-H_2O-H_3PO_4-(C_2H_5)_3N(50:30:20:0.02:0.04)as its mobile phase,the flow rate was 1 mL/min.The standard working curve was made to determine the contents of OA and UA at different habitat and different time spot from samples.Result The contents of OA and UA were highest in Ankang city.During prolonging growing stages,the highest contents of OA and UA were October and August,respectively.They both reduced to the lowest point in December.Conclusion The contents of OA and UA changed in different habitat and diffrernt growing stages of Fructus Ligustri Lucidi. It was suggested that we should mainly base on the highest contents to select the harvest time according to our demands.

Objective:To investigate the expressions of krüppel-like factor 4 (KLF4) in human glioma tissues and its effect on the activity of tumor cells.Methods:The glioma tissues specimens of 74 patients with primary malignant gliomas who were admitted to Nanyang Second General Hospital of Henan Province from March 2018 to May 2019 were collected. During the same period, 50 cases of benign meningioma tissues and 31 cases of normal brain tissues receiving surgery because of head injury were also collected. Real-time fluorescence quantitative polymerase chain reaction (RT-PCR) was used to detect the expression of KLF4 mRNA in tissues. Glioma U-87MG cells were selected and the glioma cell models with low-expression of KLF4 were constructed and were divided into the blank control group, KLF4-NC group and KLF4-siRNA group. The proliferation ability of cells was detected by using MTS cell proliferation detection kit, and the expression levels of E-cadherin, vimentin and zonula occludens protein 1 (ZO-1) were detected by using Western blot.Results:The relative expression level of KLF4 mRNA in low-grade glioma, benign meningioma, and normal brain tissues was 0.26±0.04, 0.13±0.02, 0.11±0.02, respectively, which were lower than that in high-grade glioma(0.34±0.06), and the difference was statistically significant ( t = 8.381, 15.720, 15.984, all P<0.05). The relative expression level of KLF4 mRNA in benign meningiomas and normal brain tissues was lower than that in low-grade gliomas, and the difference was statistically significant ( t = 13.771, 14.239, all P<0.05). At each time point of cell culture, the proliferation ability of U-87MG cells in KLF4-siRNA group was lower than that of the blank control group and KLF4-NC group, and the difference was statistically significant (all P < 0.05). There was no significant difference in U-87MG cell proliferation ability between the blank control group and KLF4-NC group ( P > 0.05). The relative expression level of E-cadherin and ZO-1 protein in KLF4-siRNA group was 0.82±0.10, 0.79±0.11, respectively, which were higher than that in the blank control group (0.24±0.08, 0.39±0.05) and KLF4-NC group (0.26±0.05, 0.42±0.09), and the difference was statistically significant (all P < 0.01); and the relative expression level of vimentin in KLF4-siRNA group (0.31±0.08) was lower than that in the blank control group (0.90±0.08) and KLF4-NC group (0.92±0.05), and the difference was statistically significant (all P < 0.01). There was no statistically significant difference in the expression level of E-cadherin, vimentin and ZO-1 between the blank control group and KLF4-NC group (all P > 0.05). Conclusion:The expression level of KLF4 is increased in human glioma tissues, especially in high-grade glioma. Down-regulating the expression of KLF4 may inhibit glioma cell proliferation and epithelial-mesenchymal transition, and reduce cell activity.

Objective Posterior reversible encephalopathy syndrome (PRES) is a rapidly evolving neurologic syndrome with characteristic clinical and radiographic features. To define the clinical characteristics of PRES in patients with eoneomitant systemic lupus erythematosus (SLE) by analyzing their clinical manif-estations and reviewing the literature. Methods The details of 4 cases and a review of the literature relevant to the development of PRES in association with SLE are presented. We described the clinical and imaging characteristics and associated risk factors of posterior roversible PRES in patients with SLE. Results Inclu-ding our cases, we reviewed a total of 48 patients with SLE and PRES. Hypertension was observed in 42 cases (88%), renal failure in 30 cases (63%), 39 recent onset cases were treated with immunosuppressive drugs and/or steroids recently (81%). Headache was observed in 46 cases (96%), Corffusion/coma in 20 cases (42%), seizures in 43 cases (90%), visual disturbances in 28 cases (58%). Neuroimaging demonstrated posterior white matter edema involving the parietal-occipital, temporal, frontal lobes, and cerebellum. The hypertension and other worsening factors should be treated. Conclusion PRES is a central nervous system syndrome that is observed in SLE patients. It is associated mainly to acute hypertension, renal failure, and immunosuppressive drugs. Although reversibility is common, residual neurological damage may be observed. Complete clinical and radiographic recovery oeeurrs with prompt antihypertensive treatment and supportive care.

Objective To investigate characteristic skin lesions and typical histopathological changes of adult-onset Still's disease(AOSD) for its early diagnosis and treatment.Methods Clinical data were collected from 8 patients with AOSD,and analyzed retrospectively.Results All the patients had transient rashes and persistent papules/plaques during the course of disease.Of the 8 patients,1 had urticaria-like rashes,3 had dermatomyositis-like rashes,and 1 had prurigo pigmentosa-like rashes.Biopsies were carried out at the sites where transient rashes or persistent papules/plaques occurred.Histopathological findings showed necrotic keratinocytes in the upper prickle cell layer,and perivascular infiltration of neutrophils and lymphocytes in the upper dermis.Conclusion The skin lesions and histopathological changes of AOSD are characteristic,which can provide clues to the early diagnosis of AOSD.

AIM and METHODS: The effects of angiotensin II(AngII) on the activation of three transcription factors were investigated by using EMSA and western-blot methods in endothelial cells respectively. RESULTS: The EMSA results showed that AngII stimulation could increase NF-κB, SP-1 and AP-1 activation in ECV304, which suggested that activity changes in these three transcription factors could partly contribute to the dysfunction of endothelial cells.The binding affinity of NF-κB, SP-1 and AP-1 with corresponding oligonucleotides in AngII-treated ECV-304 were respectively 10.98,3.89,1.33 times as large as in control. The nuclear appearance of AngII-activated NF-κB was examined by western-blot, which corroborates our results from EMSA analysis. While as the protein appearance of AP-1 and SP-1 in nucleus, were little higher than the control group. The result of western-blot suggested that AngII-induced EC activation of these three transcription factors maybe mainly due to the enhanced binding ability to its corresponding cis-acting factors. CONCLUSION: NF-κB, a ubiquitously exposed nuclear transcription factor, is involved, together with SP-1,AP-1, in the regulation of endothelial cell dysfunction related to cardiovascular diseases such as atherosclerosis and hypertension.

AIM: To investigate the mechanism of proliferation effect induced by (R,R)-XY-10 and (S,S)-XY-10 on retinal pigmented epithelial cells(ARPE-19).METHODS: Human retinal pigmented epithelial cells(ARPE-19) and human umbilical vein endothelial cells (HUVECs) were used to investigate the effect of (R,R)-XY-10 and (S,S)-XY-10 on cell growth,and their mechanisms of proliferative action by using ERK、 AKT、PI3K、Protein kinase C (PKC)and Nitric oxide synthase (NOS) inhibitors.RESULTS: (R,R)-XY-10 and (S,S)-XY-10 dose-dependently increased ARPE-19 cell proliferation,but not on HUVECs. When treated with proliferative inhibitors,H7(5μmol/L)、hypericin(20μmol/L)、PD98059(2μmol/L)、LY294002(50μmol/L)、SH-5 (10μmol/L) and L-NAME (100μmol/L),the proliferative effect was reduced by H7、hypericin、PD98059 and LY294002,but not by SH-5 and L-NAME.CONCLUSION: (R,R)-XY-10 and (S,S)-XY-10 can induce cell proliferation through MAPK and PI3K dependent pathway. KEYWORDS: age-related macular degeneration; (R,R)-XY-10; (S,S)-XY-10; ARPE-19 cells; human umbilical vein endothelial cells; proliferation

Abstract: Objective　By collecting and sorting the information of varicella cases reported in Liaoning Province from 2006 to 2021, the epidemiological characteristics were analyzed, and the monthly incidence data were predicted, so as to explore the prevention and control strategy of varicella disease in Liaoning Province. Methods　By collecting the characteristic information of varicella cases in Liaoning Province, epidemiological analysis was carried out on the regional, population, and temporal characteristics of varicella incidence. The monthly incidence data of varicella were fitted with Eviews software, seasonal ARIMA model was used for modeling, and models were selected according to SC and AIC. After modeling, the model was used to predict the incidence data in 2022. Results　The incidence rate of varicella in Liaoning Province has increased in recent years. The onset time was "bimodal distribution", with the main peak occurring from November to January of the next year and the secondary peak occurring from May to June. Since 2019, the onset age has shifted backward. From the original 0-<10 age group with the highest incidence rate, it shifted to the 10-<20 age group with the highest incidence rate. From 2006 to 2021, the incidence of varicella mainly concentrated in people aged 0 to <40 years old, and the incidence rate of the population over 40 years old showed a cliff-like decline. The incidence of chickenpox was higher in the central region of Liaoning Province, such as Shenyang, Dalian, Anshan and Panjin, and relatively low in Huludao, Jinzhou, Fuxin and Liaoyang. The distribution of the population was mainly students, followed by kindergartens and scattered children. ARIMA model of monthly incidence data was established by software as ARIMA (1, 0, 1) (1, 1, 1)12. Conclusions　The incidence rate of varicella in Liaoning Province has been rising in recent years. The incidence is obviously seasonal, and the age group of the affected population has moved backward. It is predicted that the incidence will continue to increase in 2022. The prevention and control of varicella should still be the current key work. In order to reduce the population incidence rate, two-dose vaccination strategies should be vigorously promoted the implementation of the, and the inclusion of varicella vaccine in the immunization program should be achieved as soon as possible.

To reveal the variation of polysaccharides and alcohol-soluble extract contents of Dendrobium officinale, the polysaccharides and alcohol-soluble extracts contents of three D. officinale strains were determined by phenol-sulfuric acid method and hot-dip method, respectively. The results showed that the contents of polysaccharides and alcohol-soluble extracts and their total content were significantly different among D. officinale samples collected in different periods, and the variations were closely related to the phenology of D. officinale. Additionally, the quality variation of polysaccharides was closely related to the flowering of D. officinale, while the alcohol-soluble extracts was closely associated to the formation and germination of buds. According to the dynamic variation of these two compounds, it is more reasonable to harvest D. officinale at biennials pre-bloom than at specific harvesting month considering polysaccharides content. It is better to harvest before the germination of buds considering alcohol-soluble extracts. While with regards to both polysaccharides and alcohol-soluble extract, it is better to harvest this plant at the period from the sprouting to pre-bloom next year.
Dendrobium ; chemistry ; Plant Extracts ; isolation & purification ; Polysaccharides ; isolation & purification

We determined molecular characteristics of Listeria monocytogenes foodborne isolates in Hangzhou and investigated the characterization of local strains.Multi-locus sequence typing(MLST) and pulsed-field gel electrophoresis(PFGE) were applied to identify molecular types of Listeria monocytogenes isolates.Results showed that a total of 133 strains of 6 serotypes were divided into 19 MLST types including a new type ST767.ST9 and ST121 were the major ST types.There were 33 and 45 PFGE patterns characterized by AscⅠ and ApaⅠ.The molecular types of Listeria monocytogenes strains were widely distributed in Hangzhou.It is indicated that the major clusters were Lineage Ⅰ and Lineage Ⅱ which will cause listeriosis.The contamination of Listeria monocytogenes in food is serious in Hangzhou and the surveillance and management should be strengthened to prevent the food borne diseases.