Iron overload is strongly associated with heart disease. Ferroptosis is a new form of regulated cell death indicated in cardiac ischemia-reperfusion (I/R) injury. However, the specific molecular mechanism of myocardial injury caused by iron overload in the heart is still unclear, and the involvement of ferroptosis in iron overload-induced myocardial injury is not fully understood. In this study, we observed that ferroptosis participated in developing of iron overload and I/R-induced cardiomyopathy. Mechanistically, we discovered that Parkin inhibited iron overload-induced ferroptosis in cardiomyocytes by promoting the ubiquitination of long-chain acyl-CoA synthetase 4 (ACSL4), a crucial protein involved in ferroptosis-related lipid metabolism pathways. Additionally, we identified p53 as a transcription factor that transcriptionally suppressed Parkin expression in iron-overloaded cardiomyocytes, thereby regulating iron overload-induced ferroptosis. In animal studies, cardiac-specific Parkin knockout mice (Myh6-CreER ^T2 /Parkin ^fl/fl ) fed a high-iron diet presented more severe myocardial damage, and the high iron levels exacerbated myocardial I/R injury. However, the ferroptosis inhibitor Fer-1 significantly suppressed iron overload-induced ferroptosis and myocardial I/R injury. Moreover, Parkin effectively protected against impaired mitochondrial function and prevented iron overload-induced mitochondrial lipid peroxidation. These findings unveil a novel regulatory pathway involving p53-Parkin-ACSL4 in heart disease by inhibiting of ferroptosis.

[abstract] Objective To study the health education on diabetes nurse diabetes management mode at the core of application in the patients with follow-up effect. Methods Our hospital endocrinology in October 2015,participate in blood sugar management company research project(namely,doctors,nurses and patients ofthree Eonline and offline (O2O) integration management system).The project is the specialist education nurses,doctors and patients of organic whole,to form a closed-loop management.Use of the project with mobile tablet (PAD),SMS platform on the first base into a group of patients with type 2 diabetes insulin for 5 minutes on education and baseline data collection,and in the next 15 weeks of diabetes health education nurses via text message and phone tracking in the form of blood sugar and insulin dose data,at the same time for more than three months of education,guidance and management,to help patients with initial foundation of insulin self management knowledge and skills,promote the blood glucose control is at target. Results In 12 weeks of the completion of this project and follow-up,425 patients of FPG success rate is 82.6%. Conclusion Nurse diabetes health education as the core of diabetes management model is feasible in patients with type 2 diabetes, the effect is good,that greatly arouse the subjective initiative of patients;Improve the patients′self-management ability,improving according to the medical behavior;Improved treatment adherence to standard prompt patients FPG.

OBJECTIVE:To optimize the ethanol mixed-extraction technology of Red ginseng and Salvia miltiorrhiza in Xin-likang granules. METHODS:L9(34)orthogonal test was adopted to optimize ethanol mixed-extraction technology with ethanol vol-ume fraction,amount of ethanol and extraction times as factors using weighting coefficient comprehensive score of the contents of ginsenoside Rg1,Re and Rb1 in R. ginseng and the contents of tanshinone ⅡA and salvianolic acid B in S. miltiorrhiza as index;and the verification test was detected. RESULTS:Optimal mixed-ethanol extraction technology was as follows as 6-fold 70% etha-nol,reflux extracting for 3 times,2 h each time. In verification test,average contents of ginsenosides Rg1,Re,Rb1 in R. ginseng and those of tanshinone ⅡA and salvianolic acid B in S. miltiorrhiza were 3.963 8,0.757 3,4.986 2,0.964 7,27.662 5 mg/g,re-spectively,and comprehensive score was 0.96 (RSD=1.26%,n=3). CONCLUSIONS:Ethanol extraction technology of R. gin-seng and S. miltiorrhiza in Xinlikang granules optimized by multiple indexes comprehensive score combined with orthogonal test is stable,reasonable and feasible.

OBJECTIVE:To establish a method for the content determination of berberine hydrochloride in the Jiangtang xiao-zhi tablets. METHODS:HPLC was conducted with the Symmetry C18 column. The mobile phase was acetonitrile-0.05 mol/L sodium dihydrogen phosphate(pH adjusted to 3.0 using phosphoric acid)(24∶76,V/V)at the flow rate of 1.0 ml/min. The detection wave-length was 345 nm,the column temperature was room temperature and injection volume was 10 μl. RESULTS:The linear range of berberine hydrochloride was 0.522-4.698 μg(r=0.999 9);RSDs of precision,stability and reproducibility tests were no more than 0.72%;the average recovery was 97.79%(RSD=2.09%,n=6). CONCLUSIONS:The method is simple,accurate,sensitive and reproducible,and can be used for the content determination of berberine hydrochloride.

OBJECTIVETo detect DNA and chromosomes instabilities during the progression of tumors and screen new molecular markers coupled to putative or unknown oncogenes and/or tumor suppressor genes.

METHODSFive kinds of tumors, in a total of 128 specimens, were analyzed by random amplified polymorphic DNA (RAPD) PCR. Bands representing instabilities were recovered, purified, and cloned, labeled as probes for Southern and Northern blot analysis and DNA sequencing.

RESULTSSample 5 and 3 of the gastric cancer tissues showed the highest genomic changes and the average detectability in five cancers was up to at least 40% (42.2% - 49.4%). There were significant differences in the ability of each primer to detect genomic instability, which ranged from 27% (primer 8) to 68% (primer 2). Band B is a single copy fragment, and was found to be an allelic loss in gastric and colon cancers. It is a novel sequence and was registered in GenBank with Accession Number AF151005. Further analysis revealed that it might be part of a cis-regulatory element of a new tumor suppressor gene, containing a promoter of cis-action "CACA" box, an enhancer of "GATA" family and a start codon.

CONCLUSIONSIt was impossible or difficult to get great achievements for cancer treatments with the procedure of gene therapy only to one oncogene or one tumor suppressor gene because the extensive DNA variations occurred during the progression of tumor. RAPD assay connected with other techniques was a good tool for the detection of genomic instabilities and direct screening of some new molecular markers related to tumor suppressor genes or oncogenes.

Base Sequence ; Blotting, Southern ; Colonic Neoplasms ; genetics ; pathology ; Humans ; Liver Neoplasms ; genetics ; pathology ; Lung Neoplasms ; genetics ; pathology ; Molecular Sequence Data ; Neoplasms ; genetics ; pathology ; Polymorphism, Restriction Fragment Length ; Random Amplified Polymorphic DNA Technique ; Sequence Analysis, DNA ; Stomach Neoplasms ; genetics ; pathology

Objective To introduce an operative method for the treatment of type Ⅱ fracture of distal clavicle. Methods The clavicle and coracoid proc ess were compressively fixed with screw in, and the coracoclavicular ligament wa s repaired in 24 cases of type Ⅱ fracture of the distal clavicle. Results The fractures healed in all the cases with good function of joint, and without screw loosening or traumatic arthritis. Conclusion The operative method is an ideal m anagement for the treatment of adult type Ⅱ fracture of distal clavicle, due t o its easy handling, reliable fixation, exact curative effects and less complica tions.