AIM:To investigate the characteristics of Ets-1 and VEGF expression and distribution in the experimental diabetic rat retina.METHODS:Diabetes was induced by intraperitoneal injection of streptozotocin (STZ).At 4 weeks after STZ-injection,animals were sacrificed.Total proteins were isolated from retinas of experimental and control eyes and were assessed by Western blot analysis.Frozen cross sections of eyeballs with 14um thickness were used to perform double immunoffuorescence staining with anti-Ets-1 and anti-VEGF antibodies.RESULTS:Both Ets-1 and VEGF expression were up-regulaled in the diabetic retina,the distribution of Ets-1 and VEGF was identical to each other,and the two proteins were almostlocalized in all retinal layers.CONCLUSION:Ets-1 might contribute to the pathologic progress of the diabetic retina induced by VEGF.

AIM: To determine the involvement of Ets-1 in the pathological progress of the experimental diabetic retina. METHODS: Diabetes was induced by intraperitoneal injection of STZ. Total RNA and Total proteins were isolated from retinas of experimental and control eyes at 4 weeks after STZ-injection and were assessed by Northern blot analysis and Western blot analysis, respectively.RESULTS: Expression of both Ets-1 mRNA and Ets-1 protein was significantly increased in the experimental diabetic rat's retina after STZ-injection compared with the control group (P＜0.001).CONCLUSION: Our results indicated that Ets-1 was involved in the pathological progress of experimental diabetic retina.Further studies should be conducted to focus on the relationship between Ets-1 and VEGF in the diabetic retina.

Objective To explore the feasibility of bletilla striata polysaccharide as a drug delivery material .Method With hydrophobic cholesterol succinyl bletilla striata polysaccharide (CHSB) as the carrier ,the model drug paclitaxel (PTX) loaded nanoparticles were prepared via dialysis method .The morphology of nanoparticles was observed by Transmission Elec-tron Microscope (TEM) .The particle size ,distribution and zeta potential were characterized by Dynamic Light Scattering in-strument (DLS) .The entrapment efficiency ,drug loading and in vitro release were determined by high performance liquid chromatography (HPLC) .Differential Scanning Calorimetry (DSC) was used to confirm the drug form in the drug loaded nan-oparticles .The in vitro antitumor activity of nanoparticles was assayed by MTT .The uptake of nanoparticles by QGY-7703 liver cancer cells was observed by fluorescence labeling method .Results The prepared nanoparticles had spherical shape with uniform particle size distribution .The drug was loaded in the interior of the nanoparticles .Drug loading and encapsulation effi-ciency were affected by the CHSB in certain range .The cytotoxicity of drug loaded nanoparticles on liver cancer cells was stron-ger than the free drug .The fluorescence of Rhodamine B labeled drug nanoparticles were observed in the cells .Conclusion Cholesterol succinyl bletilla striata polysaccharide (CHSB) is highly feasible as an insoluble drug carrier .It can be used as a po-tential Nano carrier material .

Various anatomic anomalies have been considered the causes of nutcracker syndrome (NCS). Posterior NCS refers to the condition, in which vascular narrowing was secondary to the compression of the retroaortic left renal vein while it is crossing between the aorta and the vertebral column. Here, we report an unusual case of posterior NCS associated with a complicated malformation of the interrupted left inferior vena cava with azygos continuation and retroaortic right renal vein, diagnosed by both color Doppler ultrasonography and CT angiography.
Adult ; Azygos Vein/*abnormalities ; Diagnosis, Differential ; Female ; Humans ; Renal Nutcracker Syndrome/*radiography/*ultrasonography ; Renal Veins/*abnormalities ; Tomography, X-Ray Computed ; Vena Cava, Inferior/*abnormalities

Animals ; Cholestasis, Intrahepatic ; drug therapy ; Male ; Rats ; Rats, Sprague-Dawley ; Ursodeoxycholic Acid ; therapeutic use

Objective To analyse the preliminary clinical results of intensity modulated radiation therapy (IMRT) for 122 untreated nasopharyngeal carcinoma (NPC)pafients.Methods 122 NPC pa- tients received IMRT alone from Feb.2001 to Jun.2004,with 31 females and 91 males,and a median age of 45 years(range 25-66).According to the Fuzhou Stage Classification,there were StageⅠ11 patients, StageⅡ34,StageⅢ62,and StageⅣa 15.IMRT was carried out using an inverse planning system (COR- VUS 5.0,Peacock plan) developed by the NOMOS Corp.The treatment was given with the Multi-leaf Inten- sity Modulating Collimator (MIMIC) using a slice-by-slice arc rotation approach.The prescription dose was 68 Gy/30f to the nasopharynx gross tumor volume (GTV_(nx)),60-66 Gy/30f to positive neck lymph nodes (GTV_(nd)),60 Gy/30f to the first clinical target volume (CTV_1) and 54 Gy/30f to the second clinical target volume (CTV_2).Kaplan-Meier method was used to calculate the overall survival rate (OS),distant metas- tasis-free survival rates (DMFS),and local-regional control rates from the last date of therapy.Log-rank test was used to detect the difference between groups.Results The median follow-up time was 20 months ( range 6 to46 months).The 1-,2-,and 3-year OS was 95.2%,91.4%,85.1%,DMFS was 91.9%, 88.6%,85.6%,and the local-regional control rates was 96.5%,93.2%,93.2%,respectively.Statistics of the local control rate was insignificant either for advanced T(T3+T4) stage or early T(T1+T2) stage diseases(P=0.148).The 2-year regional control rate was insignificant either for patients with N(+) or N (-),but the 2-year DMFS was significant both for patients with N(+) and N(-)lesions(P=0.004).For 17 patients who failed,there were two with residual disease and one with recurrence at the primary site (17.6%),three patients in the neck (17.6%),twelve patients (70.6%) in distant metastases.Conclu- sions Intensity modulated radiation therapy does provide excellent local-regional control for untreated NPC, especially in patients with advanced T stage or N(+) lesion.Distant metastasis is the main cause of failure. N (+) is significantly correlated with distant metastasis.

ObJective To study the hypothalamic-pituitary-adrenal (HPA) axis function with dexamethasone suppression test (DST) in inpatients with unipolar depression or bipolar disorder at different mood states. Methods DST was performed in 38 inpatients with unipolar depression and 63 with bipolar disorder ([19 with type Ⅰ, 44 with type Ⅱ], [33 with depressive episode, 18 with manic episode and 12 with combined episodes]). After 4 weeks' treatment, DST was performed again on 17 patients with unipolar depression and 35 with bipolar disorder to compare the negative suppression ratio. Results Before treatment, the negative suppression rate of DST was significantly different between unipolar depression (36.8%) and bipolar disorder (14.3%), type Ⅰ bipolar disorder (10.5%), type Ⅱ bipolar disorder (15.9%) or bipolar disorder with current depressive episode (15.2%) (P<0.05). However, no statistic differences were showed among type Ⅰ bipolar disorder and type Ⅱ bipolar disorder, depressive episode of bipolar disorder (15.2%), manic episode of bipolar disorder (16.7%) or combined episodes of bipolar disorder (11.1%) (P>0.05). After treatment, the same comparison was performed, but negative suppression rate of DST was not significantly different among all the groups (P>0.05). With the clinical improvement, negative suppression rate of DST decreased in patients with unipolar disorder;while no significant differences were found between pre-treatment and post-treatment in patients with both unipolar and bipolar disorders (P>0.05). Conclusion At the status of illness, the negative suppression rate of DST in the unipolar depression, being independent from the clinical subtypes, types of episode and severity of the illness in bipolar disorder, is much higher than that in the bipolar disorder.

Objective To explore the relationship between the course of disease and glycolipid metabolic parameters in drug-naive schizophrenia patients. Methods All 186 drug-naive schizophrenia patients,admired to our hospital from March 2010 to October 2011,were chosen in our study; relative glycolipid metabolic parameters at baseline were tested and Positive and Negative Syndrome Scale (PANSS) was performed on these patients; and the relationships between relative glycolipid metabolic indexes and both the course of disease and manipulated variable (age,gender,education level and severity of the disease) were assessed.Results Gender might play a significant role to some glycolipid metabolic parameters (waist-hip ratio [WHR]:β=0.364; high-density lipoprotein [HDL]:β=-0.248; triacyiglycerol [TG]:β=0.167 and lysophosphatidic acid (LPA):β=-0.198,P＜0.05); age might play an important role to some glycolipid metabolic parameters (body mass index [BMI]: β=0.213; WHR: β=0.286 and apolipoprotein B 100 [apoB100]:β=0.221,P＜0.05).Simultaneously,the severity of disease appeared to affect some glycolipid metabolic parameters (BMI:β-0.167; WHR:β=-0.150 and fasting blood-glucose [FBG]:β=0.172, P＜0.05). The course of disease hardly affected the majorities of relative glycolipid metabolic indices of drug-naive schizophrenia but LPa (β=0.173, P＜0.05). Conclusion The high metabolic abnormality incidence in schizophrenia patients maybe result from multi-factor interactions.

Objective To analyze the literature on artificial intelligence in forensic research from 2012 to 2022 in the Web of Science Core Collection Database,to explore research hotspots and developmen-tal trends.Methods A total of 736 articles on artificial intelligence in forensic medicine in the Web of Science Core Collection Database from 2012 to 2022 were visualized and analyzed through the litera-ture measuring tool CiteSpace.The authors,institution,country(region),title,journal,keywords,cited references and other information of relevant literatures were analyzed.Results A total of 736 articles published in 220 journals by 355 authors from 289 institutions in 69 countries(regions)were identi-fied,with the number of articles published showing an increasing trend year by year.Among them,the United States had the highest number of publications and China ranked the second.Academy of Forensic Science had the highest number of publications among the institutions.Forensic Science Inter-national,Journal of Forensic Sciences,International Journal of Legal Medicine ranked high in publica-tion and citation frequency.Through the analysis of keywords,it was found that the research hotspots of artificial intelligence in the forensic field mainly focused on the use of artificial intelligence technol-ogy for sex and age estimation,cause of death analysis,postmortem interval estimation,individual identification and so on.Conclusion It is necessary to pay attention to international and institutional cooperation and to strengthen the cross-disciplinary research.Exploring the combination of advanced ar-tificial intelligence technologies with forensic research will be a hotspot and direction for future re-search.

OBJECTIVETo compare the asbestos-induced DNA damage and repair capacities of DNA damage between 104 asbestos-exposed workers and 101 control workers in Qingdao City of China and to investigate the possible association between polymorphisms in codon 399 of XRCC1 and susceptibility to asbestosis.

METHODSDNA damage levels in peripheral blood lymphocytes were determined by comet assay, and XRCC1 genetic polymorphisms of DNA samples from 51 asbestosis cases and 53 non-asbestosis workers with a similar asbestos exposure history were analyzed by PCR/RFLP.

RESULTSThe basal comet scores (3.95 +/- 2.95) were significantly higher in asbestos-exposed workers than in control workers (0.10 +/- 0.28). After 1 h H2O2 stimulation, DNA damage of lymphocytes exhibited different increases. After a 4 h repair period, the comet scores were 50.98 +/- 19.53 in asbestos-exposed workers and 18.32 +/- 12.04 in controls. The residual DNA damage (RD) was significantly greater (P<0.01) in asbestos-exposed workers (35.62%) than in controls (27.75%). XRCC1 genetic polymorphism in 104 asbestos-exposed workers was not associated with increased risk of asbestosis. But compared with polymorphisms in the DNA repair gene XRCC1 (polymorphisms in codon 399) and the DNA damage induced by asbestos, the comet scores in asbestosis cases with Gln/Gln, Gln/Arg, and Arg/Arg were 40.26 +/- 18.94, 38.03 +/- 28.22, and 32.01 +/- 11.65, respectively, which were higher than those in non-asbestosis workers with the same genotypes (25.58 +/- 11.08, 37.08 +/- 14.74, and 29.38 +/- 10.15). There were significant differences in the comet scores between asbestosis cases and non-asbestosis workers with Gln/Gln by Student's t-test (P<0.05 or 0.01). The comet scores were higher in asbestosis workers with Gln/Gln than in those with Arg/Arg and in non-asbestosis workers exposed to asbestos, but without statistically significant difference.

CONCLUSIONSExposure to asbestos may be related to DNA damage or the capacity of cells to repair H2O2-induced DNA damage. DNA repair gene XRCC1 codon 399 may be responsible for the inter-individual susceptibility in DNA damage and repair capacities.

Adult ; Aged ; Amino Acid Substitution ; Arginine ; blood ; Asbestos ; toxicity ; Comet Assay ; DNA Damage ; drug effects ; genetics ; DNA Repair ; drug effects ; genetics ; DNA-Binding Proteins ; genetics ; Genotype ; Glutamine ; blood ; Humans ; Hydrogen Peroxide ; toxicity ; Lung Neoplasms ; chemically induced ; genetics ; Lymphocytes ; metabolism ; Middle Aged ; Occupational Exposure ; Polymerase Chain Reaction ; Polymorphism, Genetic ; drug effects ; physiology ; X-ray Repair Cross Complementing Protein 1