ObjectiveTo observe the effect of Huayu Mingmu prescription on retinal angiogenesis and phosphatidylinositol 3-kinase/protein kinase B/mammalian target of rapamycin （PI3K/Akt/mTOR）-hypoxia inducible factor-1α/vascular endothelial growth factor A （HIF-1α/VEGFA） signaling pathway in diabetic retinopathy （DR） rats. MethodsSixty-four SPF-grade male SD rats were used in the study. Eleven rats were randomly selected as the normal group， while the remaining 53 rats were fed a high-sugar， high-fat diet combined with low-dose streptozotocin （STZ） intraperitoneal injection to establish a type 2 diabetes mellitus （T2DM） rat model. DR model evaluation was performed after 12 weeks of diabetes. The rats were then divided into model， low-dose， medium-dose， and high-dose groups of Huayu Mingmu prescription （9.29， 18.57， 37.14 g·kg^-1）， and a calcium dobesilate group （0.16 g·kg^-1）， with 10 rats in each group. The rats were orally administered the corresponding doses of Huayu Mingmu prescription and calcium dobesilate. The normal and model groups received equal volumes of physiological saline via gavage for 8 consecutive weeks. Retinal vascular changes were observed through fundus photography， and pathological changes in retinal tissue were evaluated using hematoxylin-eosin （HE） staining. Retinal microvascular pathological changes were examined through retinal vascular network preparation and periodic acid-Schiff （PAS） staining. Immunofluorescence （IF） was used to detect the expression of VEGFA and angiopoietin-2 （Ang-2） in retinal tissue. Western blot was employed to detect the protein expression of PI3K， Akt， mTOR， HIF-1α， VEGFA， and VEGFR2 in retinal tissue. Real-time fluorescence quantitative polymerase chain reaction （Real-time PCR） was used to assess the mRNA expression of PI3K， Akt， mTOR， HIF-1α， VEGFA， and VEGFR2 in retinal tissue. ResultsCompared with the normal group， the model group exhibited significant pathological changes in retinal tissue， including the appearance of acellular capillaries， as well as significant endothelial cell （E） proliferation and pericyte （P） loss （P<0.01）. The E/P was significantly elevated （P<0.01）. Protein and mRNA expression levels of PI3K， Akt， mTOR， HIF-1α， VEGFA， and VEGFR2 in retinal tissue were significantly increased （P<0.01）， and the expression of Ang-2 protein was significantly elevated （P<0.01）. In contrast， retinal tissue in the treatment groups showed alleviated pathological changes， with reduced endothelial cell proliferation and pericyte loss （P<0.05， P<0.01）. Among the treatment groups， the high-dose Huayu Mingmu prescription and the calcium dobesilate group exhibited a decreased E/P （P<0.01）. Protein and mRNA expression levels of PI3K， Akt， mTOR， HIF-1α， VEGFA， and VEGFR2 in retinal tissue were significantly reduced （P<0.05， P<0.01）， and the expression of Ang-2 protein was significantly decreased （P<0.01）. ConclusionHuayu Mingmu prescription can intervene in retinal neovascularization in DR rats， delay the progression of DR， and its mechanism may be related to antagonizing the PI3K/Akt/mTOR-HIF-1α/VEGFA signaling pathway.

BackgroundThe depressive episode is one of the most prevalent mental illnesses worldwide. Relaxation therapy as a psychotherapy for depressive disorder has shown itself to be a viable tool， yet the existing research on relaxation therapy combined with sertraline in the treatment of depressive episodes in children and adolescents is severely limited. ObjectiveTo discuss the effect of relaxation therapy combined with sertraline on the new-onset depressive episodes in children and adolescents， and to provide references for the treatment of depressive episodes in children and adolescents. MethodsFrom January 1， 2019 to December 31， 2020， a sample of 422 children and adolescents with depressive episodes attending the Child Mental Health Department of Sichuan Mental Health Center and fulfilling the International Classification of Diseases， tenth edition （ICD-10） diagnostic criteria were enrolled， and they were classified into study group （n=208） and control group （n=214） using random number table method. All participants were offered sertraline， based on this， study group was assigned to relaxation therapy for 25~30 min per day， five days per week for a period of two weeks. Hamilton Depression Scale 24-item （HAMD-24） and Hamilton Anxiety Scale （HAMA） were applied at the enrollment， the end of 2 weeks of treatment and the end of the 2^nd week after discharge. ResultsA total of 369 patients completed the study， including 185 in study group and 184 in control group. Analysis on HAMD-24 scores revealed a significant time effect， group effect and time×group interaction effect （F=813.279， 17.625， 8 994.905， P<0.01）. Significant time effect， group effect， and time×group interaction effect were noted on HAMA scores （F=635.041， 10.716， 13 945.986， P<0.01）. A reduction in HAMD-24 and HAMA scores was reported in study group at end of 2 weeks of treatment and end of the 2^nd week after discharge compared with baseline （t=0.924， 0.359， P<0.01）. At the end of the 2^nd week after discharge， study group scored lower on HAMD-24 and HAMA compared to control group （t=0.210， 0.720， P<0.05）. At the end of 2 weeks of treatment， study group resulted in greater improvements in depressive symptoms and anxiety symptoms than those of control group （95.14% vs. 66.30%， 89.18% vs. 71.74%， χ²=78.942， 22.526， P<0.05）. The overall efficacy rate yielded no statistical difference between two groups at end of the 2^nd week after discharge （P>0.05）， and no statistical difference was found in the adverse reactions between the two groups （P>0.05）. ConclusionCompared with sertraline alone， its combination with relaxation therapy may achieve a better short-term efficacy in the treatment of depressive episode in children and adolescents. ［Funded by Sichuan Medical Scientific Research Project （number， S18020）］

OBJECTIVE To evaluate the clinical efficacy and safety of XELOX chemotherapy （oxaliplatin+capecitabine） combined with antiangiogenic agent （apatinib） and immunotherapy （camrelizumab） in patients with inoperable metastatic colorectal cancer （CRC）of microsatellite stable （MSS） type. METHODS Clinical medical records of 40 patients with inoperable metastatic CRC of MSS type treated in Lishui People’s Hospital from January 2020 to January 2021 were retrospectively collected. According to the treatment plan， the patients were divided into control group （20 cases） and observation group （20 cases）. Control group was given XELOX+apatinib regimen， while observation group was given XELOX+apatinib+camrelizumab regimen. Every 3 weeks was a treatment cycle， and the treatment lasted for 2 consecutive cycles. The objective response rate （ORR）， disease control rate （DCR）， progression-free survival （PFS）， overall survival （OS） and adverse events （AEs） were recorded for all patients. RESULTS The ORR and DCR of observation group were 65.0% and 85.0%， respectively； and the ORR and DCR of control group were 35.0% and 75.0%， respectively， with no statistical significance between 2 groups （P＞0.05）. The median PFS of observation group and control groups were 16.0 months and 8.0 months， respectively； and the median OS were 19.0 months and 12.5 months， respectively， with statistical significance between 2 groups （P＜0.05）. Each patient in both groups had at least one AEs， and the incidences of reactive skin capillary hyperplasia and hyperthyroidism in observation group （40.0%， 20.0%） were significantly higher than those in control group （both were 0） （P＜0.05）. The incidence of nausea and vomiting in control group （90%） was significantly higher than observation group （10%） （P＜0.05）. There were 14 cases （70.0%） of patients with grade 3 or above AEs in observation group， and only 5 cases （25.0%） in control group， with statistical significance between 2 groups （P＜0.05）. However， no severe AEs that could not be tolerated or fatal occurred in the two groups， which could be alleviated after drug withdrawal or treatment. CONCLUSIONS The efficacy of XELOX chemotherapy combined with apatinib and camrelizumab in inoperable metastatic CRC patients of MSS type is comparable to that of XELOX chemotherapy combined with apatinib， but it has certain advantages in ORR， PFS and OS， and controllable safety.

Objective To explore the effect and potential mechanism of Huayu Mingmu Recipe(HMR)-containing serum on high glucose-induced angiogenesis of human retinal microvascular endothelial cells(HRMECs).Methods CCK-8 method is used to screen the optimal sugar concentrations,as well as volume fraction of drug-containing serum.A model of high glucose-induced HRMECs dysfunction was established.The HRMECs were divided into 6 groups such as normal control group which was treated with normal ECM culture medium(containing 5.5 mmol·L-1 glucose)and 10%blank serum,the mannitol control group and the high glucose model were given 19.5 mmol·L-1 mannitol and 19.5 mmol·L-1 D-glucose on the basis of the treatment of normal control group,respectively.The low-,medium-,and high-dose groups of HMR were given 10%low-,medium-,and high-dose medicated serum(without blank serum)on the basis of the model group.The colony experiment was used to detect the number of cell colonies.Transwell experiment was used to test the number of cell migration,and tube formation experiment was used to determine the forming of tubes.Immunofluorescence,Western Blot and RT-PCR were used to detect levels of protein and mRNA expression of FactorⅧ,platelet endothelial cell adhesion molecule-1(CD31),cell differentiation factor(CD34),vascular endothelial growth factor A(VEGFA),vascular endothelial growth factor receptor 2(VEGFR2).Results Compared with the normal control group,the model group could promote colony formation of HRMECs(P＜0.01),cell migration(P＜0.01),and lumen formation(P＜0.01).The levels of protein and mRNA expressions of Factor VIII,CD31,CD34,VEGFA,VEGFR2 were significantly increased(P＜0.01)in model group.Compared with the model group,low-,medium-and high-dose HMR-containing serum groups could inhibit colony formation of HRMECs(P＜0.05,P＜0.01),cell migration(P＜0.01),and lumen formation(P＜0.05,P＜0.01).The levels of protein and mRNA expressions of Factor VIII,CD31,CD34,VEGFA,VEGFR2 were significantly reduced(P＜0.05,P＜0.01)in HMR-containing serum groups.There was no statistically significant difference in results of various tests between the normal control group and the mannitol control group(P＞0.05).Conclusion HMR-containing serum can inhibit the proliferation,migration,and tube formation of HRMECs induced by high glucose,and then prevent or reduce angiogenesis.The mechanism may be related to the regulation of VEGFA/VEGFR2 signaling pathway.

Objective:To study the stability and influencing factors of potassium iodate iodized salt that can be sold in Jilin Province.Methods:In November 2020, 10 large supermarkets were randomly selected in Jilin Province, and two kinds of potassium iodate iodized salts were randomly selected in each supermarket, with five copies of each kind, a total of 100 samples of iodized salt, and the iodine content was determined by spectrophotometry (iodide-starch blue light method). Iodized salt samples were classified according to different salt species (mine salt, sea salt and lake salt) and different production processes (refined salt and non-refined salt). The salt was stored at room temperature, and the iodine content in the salt was measured at 0, 10 and 20 days after opening the packaging. The iodine content attenuation rates of different salt species and different production processes were compared.Results:The mine salt, sea salt and lake salt in iodized salt samples were 45, 45 and 10 portions, respectively. The iodine contents of the 0th day of storage [(19.89 ± 1.38), (20.62 ± 1.91), (19.78 ± 1.01) mg/kg] were compared, and the difference was not statistically significant ( F = 2.57, P = 0.093). On the 10th day, the iodine content of mine salt was lower than that of sea salt and lake salt, and the differences were statistically significant ( P < 0.05); on the 20th day, the iodine content of mine salt was lower than that of sea salt, and the difference was statistically significant ( P < 0.05). There was a significant difference in the iodine content of mine salt stored at 0, 10 and 20 days ( F = 90.62, P < 0.001). The iodine content of sea salt and lake salt on the 20th day was significantly lower than that on the 0th and 10th day, and the differences were statistically significant ( P < 0.05). The iodine content attenuation rates of mine salt, sea salt and lake salt on the 0 - 10 days was compared with that on the 10 - 20 days, and the differences were statistically significant ( Z = 2.24, 2.94, 2.80, P < 0.05). There was a significant difference in the iodine content attenuation rates of mine salt, sea salt and lake salt during the 0 - 10 days of storage ( Z = 24.05, P < 0.001), there was no statistically significant difference in the iodine content attenuation rates on 10 - 20 days ( Z = 5.86, P = 0.053). There was no significant difference in iodine content attenuation rates between refined salt and non-refined salt on 0 - 10, 10 - 20 days ( Z = 1.16, 0.28, P > 0.05). There was no statistical significant difference in the iodine content attenuation rates of refined salt and non-refined salt on the 0 - 10 days compared with those of 10 - 20 days ( Z = 0.76, 1.90, P > 0.05). Conclusions:Iodine loss occurs at 20 days after opening the packaging of iodized salt in Jilin Province. The attenuation of iodine content is less affected by salt species and production processes. It is recommended to eat iodized salt within 20 days after opening the packaging.

Objective To analyze the epidemiological characteristics and influencing factors of pulmonary infection in the elderly, and to construct a risk prediction model. Methods Stratified cluster sampling was used to randomly select 683 elderly patients in Zhangjiakou First Hospital as the investigation subjects. Sputum specimens were collected and sent for bacterial isolation, culture, identification, and drug sensitivity test. According to whether the patients had pulmonary infection, they were divided into pulmonary infection group (n=315) and non-pulmonary infection group (n=368). The clinical data of the two groups such as age, sex, COPD, and ICU admission were analyzed. Univariate analysis and logistic regression analysis were used to analyze the influencing factors of pulmonary infection in elderly patients, and a risk prediction model was established. Results A total of 331 strains of pathogenic bacteria were detected in 315 patients with pulmonary infection, and there were 207 strains (62.54%) of gram-negative bacteria detected, mainly including 95 strains (28.70%) of Acinetobacter baumannii and 71 strains (21.45%) of Klebsiella pneumoniae. There were 169 strains (26.28%) of gram-positive bacteria detected, mainly 68 strains (20.54%) of Staphylococcus aureus. In addition, there were 25 strains of fungi (7.55%). There were no significant differences in gender, smoking history, history of COPD, asthma, and stroke between the two groups (P>0.05). The proportion of patients aged≥70, mechanical ventilation, admission to ICU and recent respiratory tract infection in the experimental group was significantly higher than that in the control group (P<0.05). Multivariate logistic regression analysis showed that age, smoking history, mechanical ventilation, and ICU admission were independent risk factors for pulmonary infection in elderly patients (P<0.05). According to the above four independent influencing factors and corresponding regression coefficient of each factor, the prediction model of pulmonary infection in elderly patients was constructed, Z=-5.948+1.198× (age) +1.281×(smoking history) +2.029×(mechanical ventilation) +1.211×(ICU admission). Conclusion Lung infection in elderly patients in our hospital is dominated by gram-negative bacilli. Antibiotics should be rationally selected according to drug sensitivity results. Age≥70 years old and COPD can increase the risk of pulmonary infection in elderly patients, and the prediction model constructed can effectively predict the occurrence of pulmonary infection in elderly patients.

Dental resin materials have been widely used in the treatment of dental defects. However, the polymerization shrinkage of the resin materials tends to cause microleakage and accumulation of bacterial plaque, which leads to secondary dental caries. Endowing dental resin with antibacterial properties is an important way to solve this problem. Adding antibacterial agents to dental resin is the main method to give it antibacterial properties. Antimicrobial agents are mainly divided into three types: release type, non-release type and mixed type. In terms of antibacterial effects, the selection and addition of antibacterial agents will affect the antibacterial and mechanical properties of dental resin materials; and the long-term antibacterial effect of antimicrobial agents in the oral cavity remains to be verified; as antimicrobial agents or other environmental factors can lead to drug resistance and even dormant persistent bacteria. In recent years, researchers have been committed to improving the antibacterial effect by modifying antibacterial agents. The sustained release of antimicrobial agents via carriers is also the main research direction. This paper reviews the research progress on the antibacterial properties of dental resin materials.

ObjectiveTo explore changes of immune factors in serum before and after ultrasound-guided (US-guided ) interventional treatment of ovarian endometrial cyst.MethodsNine patients with ovarian endometrial cyst were selected between December 2011 and December 2013 in the fourth affiliated hospital of Harbin Medical University. All patients performed US-guided interventional treatment, the serum specimens were collected before and after three months of treatment respectively. NimbleGen genome microarray of serum specimens were performed to analysis the gene function and gene pathways of related factors of ovarian endometrial cyst and to find out factors with significant expression differences before and after treatment. The relevance between factors with significant expression differences and the pathogenesis of ovarian endometrial cyst were analyzed.ResultsThe expression of CD36, NR4A1and HES1 were found to be down-regulated after US-guided interventional treatment of ovarian endometrial cyst by NimbleGen genome microarray. The gene function of CD36, NR4A1 and HES1participating in angiogenesis, chemotaxis, cell adhesion was relevant to the pathogenesis of the ovarian endometrial cyst, and played roles through Adipocytokine signaling pathway, MAPK signalig pathway, Maturity onset diabetes of the young signaling pathways.ConclusionSerum CD36, NR4A1 and HES1of ovarian endometrial cyst were down-regulated after US-guided ethanol sclerotherapy , and involved in the pathogenesis of ovarian endometrial cyst .

Objective To investigate the influence of systematic nursing intervention on the quality of life of patients with radical cystectomy and bricker operation.Methods 67 patients with radical cystectomy and bricker operation were randomly divided into control group ( n = 33) and observation group ( n = 34).Control group was routinely cared, while the observation group was cared with systematic nursing intervention by the nurse in charge of work.Then all the patients were surveyed with the core questionnaire of quality of life of cancer patients (QLQ-C30) in 6 months after the operation.Results The scores of global health status, physical function, role function,emotional function,cognitive function and social function of the observation group (64.8 ± 8.7,80.1 ±9.2,67.5 ± 10.1,82.1 ± 11.5,84.6 ± 14.2,66.4 ± 12.5 ) were higher than those of the control group ( 53.3 ±9.4,68.3 ± 8.8,56.5 ± 10.3,68.3 ± 12.2,67.1 ± 10.5,55.3 ± 12.3 ), respectively.The scores of fatigue, nausea and vomiting, insomnia, and appetite loss of the observation group (34.6 ± 8.9,19.4 ± 6.9,27.7 ± 7.6,25.7± 8.4) were lower than those of the control group (44.4 ± 10.3,30.5 ± 7.6,39.8 ± 7.8,34.8 ± 10.1 ), respectively.And the difference was significant (P ＜ 0.05 ).Conclusion The systematic intervention can enhance patients' psychological, physical, and social adaptability, and improve patients' self-care skills and quality of life.

Objective: To investigate the reversal effects of pulsed magnetic fields(PMF) on the drug resistant cell line K562/ADR in vitro and their mechanism.Methods: MTT assay was used to determine the IC50 of ADR on K562/S and K562/ ADR cell lines,the detriment of PMF on the K562/ADR cell line and the reversal effects of the drug resistance after treatment with different frequencies of PMF.Flow cytometry(FCM) was applied to the assessment of concentration of intracellular ADR.Results: The drug-resistance multiple of the K562/ADR cell line was 29.36.PMF did not affect the growth of the K562/ADR cell line.Different frequencies of PMF produced different effects on the IC50 of the K562/ADR cell line.In the same condition,70Hz PMF produced the most significant effect and increasea the concentration of intracellular ADR.Conclusion: PMF can reverse the multidrug resistance of K562/ADR by enhancing the drug concentration in K562/ADR cells,and its frequency is correlated with its reversal effect:low fregucncy produces better effect.