Humic acid (HA) was extracted by NaOH solution from black soil of Heilongjiang in China.Reaction characterization of rare earth elements (La3+,Ce3+,Gd3+and Y3+) with HA was studied by Fourier transform infrared (FTIR) spectroscopy.Results showed that peaks (1600 cm-1 and 1400 cm-1) in FTIR spectra of HA became strength after reaction,implying that carboxyl groups of HA reacted with rare earth elements.

Objective:To investigate the analysis of features and differential diagnosis of ultrasonic image for patient with endometrial lesions.Methods: The imaging data of 80 patients with endometrial lesions were selected as random number table. The relevant ultrasound manifestations and sonographic features of patients were further analyzed, and then these data were compared with the pathological diagnosis by using operation.Results: In the 80 patients with endometrial lesions, 43 cases were endometrial polyps, and in the 43 cases, there were 41 cases were consistent with the pathological diagnosis and the diagnostic accordance rate was 95.35%, while there were 2 cases were not consistent between the two methods. 33 cases of the 80 patients were submucous myoma of uterus, and there were 29 cases of them were consistent with the pathological diagnosis and the diagnostic accordance rate was 87.88%, while there were 4 cases were not inconformity. And 4 cases of the 80 patients were endometrial carcinoma, the result was completely consistent with the pathological diagnosis and the diagnostic accordance rate was 100%. In the 6 misdiagnose cases, the ratios of atypical cases and (or) typical cases were 1:16, 5:36 and 1:8, respectively. All of these endometrial lesions has the distinctive manifestations on the ultrasonoscopy of color Doppler.Conclusion: For the detection of endometrial lesions, transvaginal colar Doppler ultrasonic detection has unique feature of ultrasonogram compared with other detection methods. In the contrast, there is a regular congruent relationship between the ultrasonogram of typical disease and section of pathological specimen by using operation in a certain degree, and the ultrasonogram of typical disease has definite diagnosis value.

Objective To compare the transfection efficiency of cationic polyethylenimine(PEI)with Lipofectamine 2000TM by using the plasmid DNA encoding vascular endothelial cell growth factor (VEGF165 )gene in human embryonic kidney cell line 293T.Methods PEI of different N/P ratio and Lipofectamine 2000TM were used to deliver the vector containing VEGF165 to 293T cells,respectively.Green fluorescent protein(GFP)gene was inserted into the vector as a report gene.Evaluation of cytoactive was performed by CCK-8 assay 24 h after transfection.The cells were observed by fluorescent microscope and the presence of VEGF165 in cell supernatant was detected by ELISA 48 h after transfection.The transfection efficiency was calculated and com-pared.Results Similar cytoactive and best transfection efficiency could be obtained when N/P ratio was 9,the transfection efficien-cy was around 70%.Furthermore,the presence of VEGF165 increased significantly after transfection(P <0.05),but there was no significant difference between the two groups in which different transfection methods were adopted.Conclusion PEI as a novel oli-gofectamine reagent could mediate more efficient transfection compared with lipofectamine.It also has low cell-toxicity and low price and could be an ideal vector in gene delivery technology.

Objective:To explore diagnostic value of nocturnal ST-T changes in 24h dynamic electrocardiogram (DCG)for coronary heart disease (CHD)and its clinical significance.Methods:A total of 103 cases,who showed ST-T changes in 24h DCG,received selective coronary angiography (CAG).Among them,the 56 patients with in-termittent nighttime significant ST-T changes were regarded as research group,while the other 47 patients with per-sistent ST-T changes were treated as control group.CAG results were compared and analyzed between two groups. Results:Compared with control group,there were significant rise in CAG positive rate (31.9% vs.67.9%),inci-dence rates of dyspnea and chest pain (27.7% vs.66.1%),hypertension (48.9% vs.71.4%),hyperlipidemia (31.9% vs.42.9%)and diabetes mellitus (17.0% vs.46.4%),percentages of lesions in left anterior descending artery (LAD,21.3% vs.57.1%),left circumflex coronary artery (LCX,14.8% vs.37.5%)and right coronary artery (RCA,12.8% vs.35.7%)in research group,P <0.05 or <0.01. Conclusion:Nocturnal ST-T signifieantly changes in 24h DCG,it possesses more diagnostic value for CHD,which can be regarded as a more sensitive index diagnosing myocardial ischemia.

Objective: To observe the effect of amlodipine on bone marrow endothelial progenitor cell (EPC) mobilization, neo-vascularization and cardiac function in diabetic rats after myocardial infarction (MI) with the possible mechanisms.
Methods: A total of 60 male SD rats were divided into 2 groups. Normal group, n=20. Diabetic group, n=40, the rats were fed with high fat diet (HFD) for 4 weeks and then received streptozotocin followed by left anterior descending coronary artery ligation to establish MI model, those rats were further divided into 2 sub-groups:Control group, the rats received sodium carboxymethylcellulose 1 ml/day with HFD and Treatment group, the rats received amlodipine 2 mg/kg/day with HFD, n=20 in each sub-group, all animals were treated for 4 weeks. The EPC level in peripheral blood CD45-/low+/CD133+/KDR+ at before and 1, 3, 5, 7, 14, 28 days after operation were examined by lfow cytometry, plasma vascular endothelial growth factor (VEGF) level was measured by ELISA, capillary density in MI area was determined by CD31 staining, EPC related protein expressions were detected by western blot analysis and the cardiac function was evaluated by echocardiography.
Results: EPC in CD45-/low+/CD133+/KDR+in Treatment group at 7 days after operation was increased than Control group at 5 days after operation (112 ± 30/106) vs (55 ± 10/106), plasma VEGF in Treatment group was higher than Control group (5.63 ± 1.33) ng/L vs (3.68 ± 0.98) ng/L; Treatment group presented increased expressions of protein kinase B, endothelial nitric oxide synthase (eNOS) and matrix metallopeptidase-9, increased capillary density in MI area, higher LVEF and left ventricular fractional shorting, all P<0.05-0.01.
Conclusion: Amlodipine improves EPC mobilization, neo-vascularization and cardiac function in diabetic-MI rats, it may be related to VEGF/eNOS cascade activation.

Objective To silence the beclin1 gene expression by using RNA interference technology in AR42J rat pancreatic acinar cells,and build a stable AR42J line silencing beclin1.Methods Three kinds of shRNA targeting rat beclin1 mRNA and negative control shRNA were designed and synthesized,and were inserted into the plasmids GV112,respectively.The recombinant plasmids were named as p-sh-Beclin1-1,psh-Beclin1-2,p-sh-Beclin1-3 and p-shRNA-NC.Lipo3000 was used to transfect the recombinant plasmid into AR42J cells,the expression of beclin1 mRNA were detected by RT-PCR to screen for the most efficient silencing plasmid,and then it was packaged into lentiviral (LV).AR42J cells were infected with LV and screened by puromycin.Beclin1 mRNA and protein expression was determined by RT-PCR and Western blot.Results The recombinant plasmid was confirmed by agarose gel electrophoresis and sequencing showed that shRNA sequences were in line with expectations.The beclin1 mRNA inhibition rates of AR42J cells after p-sh-Beclin1-1,p-sh-Beclin1-2,p-sh-Beclin1-3 and p-shRNA-NC transfection were (17.8 ± 4.0) ％,(30.6 ± 2.8) ％,(45.8 ± 7.7) ％,(7.0 ± 11.8) ％,respectively.The inhibition rates of three p-sh-Beclin1 transfection cells were significantly higher than that in non-transfection cells,and the difference was statistically significant (P ＜ 0.05).While the inhibition rate of p-shRNA-NC transfection cells was not significantly different from that of non-transfection cells,p-sh-Beclin 1-3 with highest rate of inhibition was packaged by LV,and infected AR42J cells,then puromycin was applied to screen,inhibition rate of beclin mRNA expression in LV infection cells was (86.1 ± 1.2) ％,and the protein expression inhibition rate was (87.9 ± 2.8) ％,and the difference between infection and non-infection groups was statistically significant (P ＜ 0.05).Conclusions The stable AR42J line silencing beclin1 is successfully established,which can provide a new cell model for future research of the role of beclin1 in the pathogenesis of acute pancreatitis.

Objective To investigate the perioperative nursing experience for patients with mayer rokitansky kuster hauser (MRKH).Methods We conducted multidisciplinary care to a MRKH patient,including personalize psychological support,bowel preparation,two surgical nursing convergence and vaginal mold care during hospitalization.Results The patient discharged after clinical symptoms remission,the patient sexual life was satisfaction,no complications were found in the six months follow-up.Conclusion The key of operation success is good coordination and cooperation of multiple departments,close observation and effective nursing in the perioperation period.

Objective To analysis the clinical features of dorsal pancreas agenesis ( DPA) and the associated diabetes, pancreatitis and other congenital organ malformations.Methods Chinese databases of Sinomed, CQVIP and CNKI using the term of short pancreas, pancreas agenesis, bulbar pancreas and dorsal pancreas, and English databases of PubMed using the term of dorsal pancreas agenesis, short pancreas and pancreas hypoplasia were searched.The clinical manifestation, pancreatic head characteristics and associations with diabetes, pancreatitis and other congenital organ malformations were analyzed.Results Six related publications from Chinese databases were searched and 21 patients were included with 2 cases excluded.Sixty-one publications from English database were searched and 71 patients were included.Thus, a total of 91 patients with DPA were analyzed.Abdominal pain was the most common manifestation, which was reported by 61.5% of the patients. 15.3% patients were identified during regular physical examination. Other manifestations including jaundice, fatigue, abdominal discomfort and diabetes were rare.After removing cases with insufficient information, 39 patients (61.9%) carried abnormal pancreatic head.Prevalence of diabetes or impaired glucose tolerance was 56.7% and the percentage of insulin-dependent diabetes in patients with abnormal glycaemia was 47.3%(n=18).20 patients (26.7%) were associated with pancreatitis, including 15 patients (75.0%) with acute pancreatitis, 1 patient (5.0%) with recurrent pancreatitis, and 4 patients (20.0%) with chronic pancreatitis. Thirty-three patients ( 36.2%) suffered other congenital organ malformations, including 21 patients (63.6%) with splenic malformation, 8 patients (24.2%) with heart malformation, and 17 patients (51.5%) with multi-organs malformations like gastrointestinal malformation, azygos vein and inferior cava vena fusion, duodenal and biliary atresia and renal absence.Conclusions The main diagnostic criteria of DPA was the absence of dorsal pancreatic duct.Diabetes was the most common complication followed by pancreatitis.

Objective:To investigate the effects of moxibustion on the serum metabolism in healthy human body based on the 1H nuclear magnetic resonance (1H NMR) metabolomics technology, and to find the differences in metabolites, as well as to elucidate the effects of moxibustion on healthy human body from the viewpoint of global metabolism. Methods:Sixty subjects of healthy young men from the enrolled students were randomly divided into a moxibustion group and a control group using random number table, with 30 cases in each group. Subjects in the moxibustion group accepted mild moxibustion on the right Zusanli (ST 36), once a day, 15 min for each time, and continuous treatment for 10 d; those in the control group did not receive any intervention. There were 28 cases in the moxibustion group and 23 cases in the control group after interventions. On the 1st day, 5th day and 10th day of the intervention, serum samples were collected from subjects of the two groups, and metabolic spectra were obtained by the1H NMR technology. Results: Before and after the intervention, serum1H NMR of the moxibustion group was significantly different, while the difference was insignificant in the control group. Metabolite changes in the moxibustion group were mainly in low density lipoprotein (LDL)/very low density lipoprotein (VLDL), valine, isoleucine, leucine, lactic acid, glutamine, citric acid, polyunsaturated fatty acids, creatine, glycine, glycerol, glucose, tyrosine, histidine, formic acid, alanine, lysine, acetic acid, and glutamic acid. Conclusion:Moxibustion can cause changes of serum metabolic patterns in healthy human by influencing the concentrations of branched-chain amino acids, polyunsaturated fatty acids, and other metabolites to strengthen body's metabolisms of amino acids and fatty acid.

Objective:To investigate the efficacy and safety of autologous hematopoietic stem cell transplantation (ASCT) in the treatment of multiple myeloma (MM).Methods:The clinical data of 64 MM patients who received ASCT in the Second Affiliated Hospital of Xi'an Jiaotong University from October 2015 to March 2022 were retrospectively analyzed. The clinical characteristics, therapeutic effects and adverse reactions of the patients were summarized.Results:Of the 64 patients, 42 were male and 22 were female; the median age was 54 years old (37-69 years old). The median number of CD34 + cells collected from 46 patients in the CE (cyclophosphamide, etoposide) regimen mobilization group and 17 patients in the plerixafor mobilization group were 7.50×10 6/kg [(1.15-24.73)×10 6/kg] and 4.54×10 6/kg [(0.75-10.40)×10 6/kg], and the difference was statistically significant ( Z = 3.02, P = 0.024). Hematopoietic reconstitution was successful in all 64 patients, and the median time for white blood cell and platelet engraftment was 11 d (8-13 d) and 11 d (8-15 d), respectively. The patients' pretreatment regimens were all high-dose melphalan, the median white blood cell and platelet engraftment time of 29 patients in the oral group were 11 d (8-13 d) and 11 d (8-15 d), respectively, the median white blood cell and platelet engraftment time of 35 patients in the intravenous infusion group were 11 d (8-12 d) and 11 d (8-15 d), respectively, and there were no statistical differences (both P > 0.05). The ≥CR rate was 48.4% (31/64) before transplantation and 70.3% (45/64) three months after transplantation, and the difference was statistically significant ( χ2 = 6.35, P = 0.012). The median follow-up time of all patients was 27 months (2-67 months). The 3-year OS and PFS rates were 77.6% and 54.9%, and the median OS and PFS time were 67 and 52 months. The median hospitalization time was 20 d (15-37 d). There was no transplantation-related mortality, and the main adverse reactions were gastrointestinal reactions (100.0%, 64/64), grade 4 thrombocytopenia (98.4%, 63/64), grade 4 neutropenia, and agranulocytosis with fever (40.6%, 26/64). Conclusions:ASCT is effective for MM patients suitable for transplantation, which can further improve the remission rate and remission depth, prolong the PFS and OS time of patients, and the adverse reactions are controllable.