Objective In order to study the value of drug treatment for leukemia, quercetin was delivered to the cultured NB4 cell line. MethodsUsing RT- PCR and western blot, we studied the expression of mutant p53 gene and protein after inducing 24, 48, 72, 96 and 120h by the quercetin with different concentrations (30, 60, 90μmol/L). Results We verified the results that quercetin with concentration of 30 ～90μmol/L could successfully inhibit the expression of mutant p53 protein, but the mutant p53 gene did not have. ConclusionThat data suggested that quercetin would be an effective method for the therapy of leukemia.

Due to its effect of systems regulation and promotion on body, Ginseng is always referred to be long-term used as a dietary supplement. But it was still unclear about its target of the tonic effects and also the side-effects long-term use may bring. Urine metabolomic method is suitable for long-term studies of pharmaco-dynamics, pharmacology and toxicology of traditional Chinese medicine because of its characteristics of non-invasive and monitoring the whole-body metabolism. This study was designed to detect the dynamic variation of rat urine metabolome along with a long-term administration of total ginsenosides using GC-TOF based metabolomic technology. Our result showed that either short-term or chronic administration of ginsenosides did not impact the rat urine metabolome significantly (as the PCA subgroup was not successful). By comparison, the short-term (1-3 w) dose of ginsenosides had the biggest metabolic influence including TCA cycle, catecholamines and neurotransmitter amino acids. Medium-term (6-10 w) dose had a gradually lower effect and long-term (27 w) dose almost had no effect. Our study indicates that both short and long-term administration of ginsenosides showed almost no obvious side-effect on the experimental animals.
Animals ; Drugs, Chinese Herbal ; metabolism ; Ginsenosides ; metabolism ; urine ; Male ; Metabolomics ; Panax ; metabolism ; Rats ; Rats, Wistar ; Time Factors

Objective:To investigate the clinical feature, diagnosis and treatment of autoimmune pancreatitis(AIP).Methods:Clinical data of 20 AIP patients admitted to the First Affiliated Hospital of University of Science and Technology of China from Jan 2014 to Dec 2019 were retrospectively analyzed.Results:Nineteen patients were diagnosed with type 1 AIP and 1 patient was with type 2 AIP. Fifteen patients were diagnosed by imaging, serology and other organ involvement, and 5 patients were confirmed by postoperative histopathology. Thirteen patients received glucocorticoid therapy. Five patients have not received glucocorticoid therapy after surgery.One patient refused treatment, and 1 patient is currently under clinical observation. Seventeen of the 20 patients were followed up, 11 patients were on glucocorticoid therapy with related clinical symptoms being gradually improved, serum IgG4 decreased and imaging findings improved. Five patients did not relapse after drug withdrawal. Three patients had recurrence of jaundice after drug withdrawal. One patient had recurrence of pancreatic lesions after drug withdrawal. Two patients had recurrence of high serum IgG4 after tapering the doses, these 6 patients were treated with steroid maintenance therapy. One patient died of repeated gastrointestinal bleeding 2 months later, and another 4 surgical patients and 1 patient under clinical observation are in good condition.Conclusions:AIP should be diagnosed in combination with clinical manifestations, serological examination, imaging examination and histopathology, especially focal lesions should be differentiated from pancreatic cancer, so as to avoid missed diagnosis and unnecessary surgical intervention.

OBJECTIVETo investigate the clinical and pathologic characteristics of patients with scleredema.

METHODThe clinical and pathologic data of 67 outpatients with scleredema who were admitted to PUMC Hospital from 1982 to 2008 were retrospectively analyzed.

RESULTSNeck and upper back lesions were detected in all patients, but no hand or foot involvement was noted. Among 54 patients who received serum immunoglobulin examination, 19 (35.2%) showed abnormal serum immunoglobulin results. Among 67 patients, 22 (32.8%) had concomitant diabetes mellitus. Alcian blue staining was performed in 35 patients, among whom 23 (65.7%) had positive results and 12 (34.3%) had negative results.

CONCLUSIONSScleredema may have systemic involvements in addition to skin lesions. Patients with scleredema also tends to have concomitant diabetes mellitus. Alcian blue staining is not sufficient to differentiate scleredema and scleroderma.

Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Female ; Humans ; Immunoglobulins ; blood ; Male ; Neck ; pathology ; Retrospective Studies ; Scleredema Adultorum ; complications ; diagnosis ; pathology ; Skin ; pathology ; Young Adult

ObjectiveTo explore the histopathological changes of bile duct,liver and local tissue for injurious biliary stricture(IBS). MethodTo observe the morphological and pathological changes of bile duct, local tissue and liver in different periods with dogs as the established animal model for IBS. ResultBile duct obstruction due to injury can expand the proximal bile duct up to 18.91 ±1.85 mm as the pressure goes up. Damage to local tissue triggers acute inflammation. In early injury phase (within 10 d), inflammatory cell infiltration and proliferation appears on the wall of the duct with increased mucosal edema as well as thickening of the biliary ductile wall. In the late injury phase (15 d), the degree of infiltration of inflammatory cells, edema and mucosal thickness were reduced whereas fibroblast and collagen tissue were proliferated extensively. The wall of biliary duct also becomes fibrotic and thickens. Quantitative analysis of the inflammatory edema shows the most severe outcome on the 5th day (HE staining WBC count of 54.2±5.8 unit) and its severity progressively subsides on the 15th day. (HE staining WBC count of 41.7±7.2 vs 54.2±5.8 a, P＜0.0,5). In the early obstruction (5 d and 10 d), the liver cells showed mild to moderate swelling and its degeneration is often associated with steatosis and sinusoidal expansion and congestion. As the obstruction time increases in the 20 d and 30 d group, liver cells starts to show extensive vacuolation and sinusoidal occlusion. ConclusionsEarly phase (5 days) of acute bile duct obstruction due to injury shows rapid expansion of the bile duct, edema in the bile duct itself as well as its surrounding tissue and liver damage. After 15 days, the local inflammatory edema is greatly reduced and is replaced by hyperplasia of fibers and collagen. Liver damage appears to be irreversible after 20 days. Considering local environmental and systemic conditions, the optimal time frame to repair obstruction of bile duct surgically is between 10-20 days.

Objective To explore the optimal timing of operation for experimental obstructive jaundice in a dog model. Method A dog model of bile duct stricture (BDS) was established. Dogs were divided into (n = 12 in each group) 6 groups, ie control, BDS days 5, 10, 15, 20, and 30. In each dog,the morphology and local histopathology of the bile duct, and the liver function in different periods were observed. At the time of surgery biopsy was taken and Roux-en-Y hepaticojejunostomy performed. Surgical complications and survival were evaluated. Result After bile duct obstruction, the proximal bile duct dilated continuously. The diameter of bile duct was 15.6 ± 1.7 mm at the 10th day. The injury bile ductshowed the acute inflammation change. In the early time (in 10 days), inflammatory cells increased in the tissues, mucous edema aggravated, the wall was edematous thickening, it was most severe ( WBC counting 54 ±6) in the 5th day. In the later period (10 -30 days), inflammatory cells reduced, bile duct wall became fibrosis, which was most obvious in the 15th day (42 ± 7 vs 54 ± 6, P ＜ 0.05 ). During the development of jaundice, serum bilirubin reached the highest level in the early period ( BDS days 5 group),then presented a platform time, and then rised extremely at the last stage of the experiment ( BDS day 30 group) . Changes of ALT and AST paralleled that of bilirubin before the 20th day of obstruction and then plummeted. BDS was repaired successfully in 57 dogs. Ten dogs died postoperatively due to bile leakage within 10 days, 3 dogs in BDS days 5 group (3/11), 4 in BDS days 10 group (4/12), one each in other groups. Postoperatively 13 BDS dogs died of malnutrition and organ failure within 3 months, including one each in days 5 and days 10 group, two each in days 15 and days 20 group, and 7 in days 30 group (P＜0. 05). Conclusion Considering the changes of morphology, physical function and result of follow up.The period between 10 and 20 days after acute bile duct injury is optimal for surgical repair.

Objective To investigate the efficacy and safety of percutaneous induced thrombosis closure on small patent ductus arteriosus (PDA) solely under echocardiography guidance.Methods From June 2013 to September 2016,276 PDA patients were treated by femoral artery retrograde approach under echocardiography guidance.Twenty-five patients (14 boys,11 girls) among them with small PDA received percutaneous induced thrombosis closure because the delivery sheath could not pass PDA,with mean age (3.7 ± 1.6) years,mean body weight (16.6 ±5.4) kg and the mean diameter of the most narrow PDA was (1.3 ± 0.4) mm.All patients were assessed by transthoracic echocardiography,chest radiography and electrocardiography preoperatively.The intraoperative and postoperative effects were evaluated by echocardiography.Outpatient assessment was performed at 1,3,6 and 12 months after operation with electrocardiography and echocardiography,and yearly thereafter.Results Twenty-five patients were successfully treated with percutaneous induced thrombosis closure solely under echocardiography guidance.The mean operation time was (35.2 ± 6.1) minutes.The immediate residual shunt rates and 24 hours after operation were 28.0％ (7/25 cases) and 16.0％ (4/25 cases),respectively.All patients recovered and were discharged from hospital.The average hospitalization stay was (3.0 ± 0.6) days.The mean follow-up was (16.8 ± 12.3) months,residual shunt was observed in 2 patients (8.0％),and it decreased from 1.5 mm and 2.0 mm preoperatively to 0.8 mm and 1.0 mm postoperatively,respectively.All patients survived without peripheral vascular injury,cardiac perforation,PDA rupture or thrombembolia.Conclusions Percutaneous induced thrombosis closure of small PDA solely under echocardiography guidance is safe and effective.It can avoid occluder implantation and radiation injury.However,the residual shunt after operation needs following up closely.

Objective To learn today's nurse career pressure and identify relating factom that affectnurses'pressure.so as to provide some adequate measures for supervisors to reduce the career pressure of nurses to the highest degree.Methods The clinical nurses in Medicine and Surgical Departements were investigated with questionnaire.Results The career pressure of nurses mainly came from several aspects such as their work amount,schedule,nursing care of patients,working environment and resources.There were also other relating factors,for instance,age,marital status,educational level,title and health condition.Conclusions Supervisors should pay attention to release the career pressure of nurses and take nurses'mental health into account.Supervisors should also try to create a free and pleasant working atmosphere and give more understand and support to our nurses.

OBJECTIVETo identify the relationship between amino acid mutations in Neisseria gonorrhoeae isolates and their antibiotic resistance.

METHODSPI gene fragments of Neisseria gonorrhoeae from 17 clinical isolates were obtained with PCR amplification. They were cloned into the PCR cloning vector pBS-T to form pBS-T-PI and sequenced. The sequences of PI genes were analyzed. At the same time, minimum inhibitory concentration (MIC) of penicillin and tetracycline to these 17 isolates were measured and contrasted with the corresponding PI sequence.

RESULTSThe recombinants of PI gene from 17 clinical isolates of Neisseria gonorrhoeae were successfully constructed and sequenced. They were divided into PIA and PIB subtypes according to the results from blastn software by comparing the sequences with the GenBank. Mutations were found at the sites of 120 and 121. There were only some of the sequences having an aspartic acid (D) mutation on 120 and 121 sites, which was not the same as reported. On the other hand,there were two PI sequences,5-9 and 6-1, whose mutations on No. 120 were lysine, similar to those documented.

CONCLUSIONSome relationship between PI amino acids mutations at sites 120 and 121 in Neisseria gonorrhoeae isolates from Chengdu, China and their resistance to penicillin and tetracycline were found. However,further studies need to be done in the future to confirm this hypothesis.

Amino Acid Sequence ; Anti-Bacterial Agents ; pharmacology ; DNA Mutational Analysis ; DNA, Bacterial ; Drug Resistance, Bacterial ; Mutation ; Neisseria gonorrhoeae ; drug effects ; genetics ; isolation & purification ; Polymerase Chain Reaction

OBJECTIVEAngiotensin-converting enzyme 2 (ACE2) gene polymorphisms have been shown to be implicated in hypertension, diabetic nephropathy, and other diseases. However, it remains unclear whether ACE2 gene polymorphisms are involved in the development of primary nephrotic syndrome (PNS) in children. The aim of this study was to assess the association between A9570G polymorphisms of ACE2 gene and PNS in a group of Han children in Guangdong Province, China.

METHODSThe genotype distribution and allele frequency of ACE2 gene A9570G in 66 children with PNS and 60 healthy subjects (control group) were analyzed by polymerase chain reaction and restriction fragment length polymorphism.

RESULTSAllele frequency and genotype distribution showed no significant difference between the PNS and control groups whether in female or in male children (P>0.05). The PNS group was classified into the glucocorticoid-sensitive and glucocorticoid-resistant subgroups according to glucocorticoid treatment response. Subgroup analysis revealed that in female children, the frequency of GG genotype was 17% in the glucocorticoid-sensitive group vs 45% in the glucocorticoid-sensitive group (P=0.018); the frequency of G allele was 31% in the glucocorticoid-sensitive group vs 61% in the glucocorticoid-resistant group (P=0.023). In male children, the frequency of G genotype/G allele was 36% in the glucocorticoid-sensitive group vs 64% in the glucocorticoid-resistant group (P=0.017).

CONCLUSIONSThere is no clear association between ACE2 gene A9570G polymorphisms and childhood PNS, but ACE2 gene A9570G polymorphisms might be associated with glucocorticoid treatment response in children with PNS. The G allele might be a genetic susceptibility factor of glucocorticoid resistance in children with PNS.

Adolescent ; Child ; Child, Preschool ; Drug Resistance ; Female ; Gene Frequency ; Glucocorticoids ; therapeutic use ; Humans ; Infant ; Male ; Nephrotic Syndrome ; drug therapy ; genetics ; Peptidyl-Dipeptidase A ; genetics ; Polymorphism, Genetic