Objective To examine whether ghrelin has beneficial effect on survival of pancreatic INS-1 beta cell.Methods Rat INS-1 cells were cultured separately in 5.6 mmol/L glucose (NG group),33.3 mmol/L glucose (HG group),33.3 mmol/L glucose plus 10 nmol/L acylated ghrelin (HG+AG group),and 33.3 mmol/L glucose plus 10 μmol/L unacylated ghrelin(HG+UG group).After being incubated for different hours,cell suvival rate was determined by MTT.Activity of caspase-3 was estimated by spectrophotometry,activity of GRP78,and cytochrome c was analyzed by confocal microscopy.Results Both acylated ghrelin and unacylated ghrelin inhibited the rise in activity of GRP78,caspase-3,and cytochrome c induced by sustained high glucose.Conclusions These findings indicate that ghrelin is able to inhibit endoplasmic reticulum stress and mitochondrial dysfunction of INS-1 β-cell caused by persistent high glucose,and the effect of ghrelin is not affected by acylation.

Objective To understand the status quo of human papillomavirus (HPV) infection and its genotypes distribution a-mong gynecological outpatients in Chengdu region .Methods The DNA microarray technique combined with PCR and DNA reverse hybridizatio technology was used to detect the genotypes of HPV infection .The data were analyzed by the SPSS 13 .0 software .Re-sults A total of 5 052 samples of cervical exfoliated cells among gynecological outpatients were detected ,and the total positive rate of HPV infection was 17 .52% .The differences of HPV infection among various age groups were statistically significant ,especially the positive rate of HPV infection in the 20-25 years age group was higher than that in the 26-30 years age group and the 31-35 years age group(P<0 .05) ,and which in the 36 -40 years age group was also higher than that in the 26 -30 years age group (P<0 .05) .The positive detection rate of high risk HPV subgenotypes was 18 .1% ,which was higher than 5 .5% of low risk sub-genotypes with statistical difference (P<0 .01) .HPV 52 was the most frequent subgenotypes in high risk subgenotypes ,accounting for 15 .03% ,followed by HPV 16 and HPV 58;HPV 81 was the most frequent subgenotypes in low risk subgenotypes ,accounting for 7 .98% .Conclusion The positive rate of HPV infection among gynecological outpatients is higher ,and the majority of geno-types are high risk .It is suggested that the routine examination of HPV subgenotypes detection focused on different age groups should be recommended .

Objective To investigate the distribution and antibiotic resistance characteristics of pathogen in mastitis patients and to provide important foundation for clinical rational antibiotic use .Methods The bacterial isolates from 114 mastitis specimens were collected .Identification and antimicrobial susceptibility testing were carried out .Results A total of 67 strains were isolated from clinical specimen ,in which Staphylococcus aureus[50 .7% (34/67)] and Staphylococcus epidermidis[44 .8% (30/67)] were themostcommonisolate,also Escherichiacoli[1.49% (1/67)],Klebsiellapneumoniae[1.49% (1/67)]andAcinetobactercalcoace-ticus[1 .49% (1/67)] were isolated .The rates of methicillin-resistant Staphylococcus aureus(MRSA) and methicillin-resistance to coagulase-negative Staphylococci(MRCNS) were 8 .8% and 46 .7% ,respectively .The sensitive rates of minocycline ,vancomycin , teicoplanin ,furadantin to MRSA strains were 100 .0% .The sensitive rates of vancomycin ,teicoplanin ,levofloxacin ,furadantin and oxacillin to methicillin-sensitive Staphylococcus aureus(MSSA) were 100 .0% .The sensitive rates of minocycline ,rifampin ,furadan-tin ,vancomycin ,teicoplanin and oxacillin to methicillin-sensitive to coagulase-negative Staphylococci(MSCNS) were 100 .0% .The sensitive rates of vancomycin ,teicoplanin ,minocycline and furadantin to MRCNS were 100 .0% .The resistance rates of penicillin to MRSA ,MSSA ,MSCNS ,MRCNS were 100 .0% .Conclusion Staphylococcus is the main pathogen of mastitis patients .Penicillin is not a first selective drug for acute mastitis .

Learning guidance in pathology teaching can help to improve the students' learning ability. Learning guidance can be mainly done in two aspects:developing and fostering the students' learning ability on their own and guiding the students to review scientifically.

Objective The investigation was done in one level three class A cancer hospital in Henan province to understand the nurses′master level of cancer pain and whether nurse have the right concept of cancer pain management. Methods Through cluster sampling, self-designed nurses pain knowledge questionnaire was used to investigate 580 nurses for the master level of cancer hospital in a level three class A cancer hospital in Henan province. Results Among 580 nurses, the cancer related knowledge investigation score were 318 nurses acquired excellent (54. 8%), 27 nurses acquired pass (35. 7%) and 55 nurses obtained fall (9. 5%). There were 373 nurses ( 64. 34%) understood the cancer three stages pain management plan. The nurse′s ages, occupational titles and work experiences of cancer nursing had positive correlation with the score of cancer related knowledge (r=0. 211, 0. 268, 0. 207;P<0. 01). Conclusions At present, the cancer hospital nurse′s master of knowledge related cancer pain is not enough, so we should enhance nurse′s pain related knowledge level, establish the correct concept of pain management, promote cancer patient′s quality of life by the continuous study and updated concept, knowledge and practice, so as to meet the demands of clinical.

Objective To analyze the levels of IgE,TNF-α and FeNO in children with acute attack of bronchial asthma and their correlation with the severity of bronchial asthma, so as to provide theoretical basis for clinical evaluation of bronchial asthma. Methods A total of 547 children with acute bronchial asthma treated in Chengdu Women and Children's Central Hospital from January 2020 to December 2020 were selected and divided into mild group (n=287), moderate group (n=186) and severe group (n=74) according to the severity of their disease. All the children's symptoms were controlled after treatment. The serum IgE, TNF-α and FeNO levels in the experimental group were compared between the acute attack stage and the clinical control stage. Spearman correlation analysis was used to analyze the correlation between the serum IgE, TNF-α and FeNO levels and the severity of the disease. ROC curve of children with bronchial asthma was drawn to analyze the differential diagnosis value of serum IgE, TNF-α and FeNO levels in children with acute bronchial asthma. Results The levels of IgE, TNF-α and FeNO in acute stage were significantly higher than those in clinical control stage (P<0.05). The levels of serum IgE, TNF-α and FeNO in severe group were higher than those in mild and moderate groups significantly (P<0.05). The levels of serum IgE, TNF-α and FeNO in moderate group were higher than those in mild group significantly (P<0.05). Spearman correlation analysis showed that serum IgE, TNF-α and FeNO water were positively correlated with the severity of bronchial asthma (r=0.419 , 0.438 , 0.502 , P<0.05). ROC curve analysis showed that the AUC, sensitivity, accuracy and specificity of serum IgE, TNF-α and FeNO levels combined in diagnosing the severity of bronchial asthma in patients with acute attack was 0.938 (95% CI: 0.912-0.982 ), 83.47%, 92.06%, 94.28%. Conclusion The level of serum IgE, TNF-α and FeNO in children with acute attack of bronchial asthma is closely related to the severity of the disease, and combined detection of the three can be used to evaluate the severity of the disease in children.