Abstract: - （ ） ， Noise induced hearing loss NIHL is a hearing disorder that seriously harms the health of workers and it is a （ ） complex disease caused by environmental and genetic factors. Single nucleotide polymorphism SNP is the most common ， （ ） genetic variation which is associated with the occurrence and development of NIHL. MicroRNA miRNA is a kind of small - - ， - non codingsingle strandedRNA whichishighlyexpressedinthecochleaandregulatesgenesbybindingtothe3′ untranslated （ ） - regionoftargetmessengerRNA mRNA .SNPofmiRNA isthemostcommongeneticvariation.SNPinthenon codingregion， participates in gene expression regulation and phenotype generation by leading to abnormal miRNA recruitment thereby， affecting the occurrence and development of NIHL. The genetic susceptibility genes of NIHL include oxidative stress genes - singlegenedeafnessgenesandheatshockproteingenes.TheSNPinthenon codingregionisassociatedwiththesusceptibility， of NIHL. miRNA SNP has been confirmed to be involved in the development of NIHL but the correlation between different miRNASNPandNIHLisdifferent.SNPaffectsthesusceptibilityofNIHLbyaffectingtheexpressionandfunctionofmiRNA.

Background and purpose:The impact of the two factors of von Willnbrang factor(vWF) and integrin?3 on tumor metastasis has not been recognized. This study was done to investigate the expression of vWF and integrin?3 in human lung cancer cell line H460,the association between the two factors and tumor metastasis effect of vWF and integrin?3 on adhesion of human lung cancer cell line H460. Methods:The expression of vWF and integrin ?3 protein was examined by immunohistochemical staining. The impact of vWF and integrin?3 on adherent effect of tumor cells was evaluated by adhesion experiment, antibody inhibiting experiment and MTT.Results:Positive expression of vWF and integrin?3 was detected in H460 human lung cancer cells. H460 human lung cancer cells were able to adhere to vWF. Using anti-integrin?3, we observed that the ability of cell adhesion to vWF was inhibited,and A Value decreased from 1.59?0.06 to 0.55?0.03(P=0.01619). Using anti-vWF, we observed cell adhesion to vWF was inhibited too and A Value decreased from 1.60?0.06 to 0.54?0.03(P=0.01598),which had the same effect when using anti-integrin?3.Conclusions:H460 human lung cancer cells are capable of producing vWF, and vWF expression contributes to metastasis by adhering to cancer cells, integrin?3 is the vWF receptor on H460 human lung cancer cells.

Background and purpose:The expression of dickkopf homolog 3 gene(DKK3)is always reduced or absent in tumors,instead part of the tumor vascular endothelial expressed DKK3.vWF is a macromolecular glycoprote synthesized and released by vascular endothelial cells and megakaryocytes.However,vWF was also expressed by tumor.The relationship between these 2 factors and the occurrence of cancer is still unclear.The purpose of this study was to observe the expression of DKK3 and vWF proteins in colorectal carcinoma and determine their clinical significance through finding their association with MVD and correlation with each other.Methods:Immunohistochemistry staining was used to detect the expression of DKK3,vWF proteins and MVD in the colorectal carcinoma tissue microarrays that contained 94 colorectal carcinoma specimens.Results:The expression of DKK3 in colorectal carcinoma was lower than or nonexistent compared to that in normal tissues(P＜0.05).The expression of vWF in colorectal carcinoma was higher than that in normal tissues(P＜0.05).Expression of DKK3 and vWF in colorectal carcinoma were not correlated to the age or gender of the patients,invasive depth,or tumor locus of the colorectal carcinoma (P＞0.05).Correlations with the expression of DKK3 and vWF in colorectal carcinoma were only found with differentiation and iynphnode metastasis (P＜0.05).However,the expression of DKK3 and vWF in colorectal carcinoma was not correlated to MVD(P＞0.05).The expression of DKK3 was not correlated to the expression of vWF in coiorectal carcinoma(r=0.1310,P=0.2090).Conclusion:A lowered expression of DKK3 and higher expression of vWF may be associated with the carcinogenesis,various biological behaviors and metastasis of colorecml carcinoma.These 2 factors can be used as important biological markers for colorectal cancer.

The application of structured education in patients with type 2 diabetes mellitus showed significant effect. This paper introduced relevant content of structured education, the application status quo of structured education in patients with type 2 diabetes mellitus at home and abroad, aiming to provide reference for exploring health education models of patients with diabetes mellitus and reduce patients' complications, thus improving their quality of life.

Objective To observe the autophagy induced by heavy ion and X-ray radiations in SW480 cells and its effect in radiation responses.Methods The cellular ultrastructure was observed with a transmission electron microscope (TEM).The autophagy vesicles were labeled by monodansylcadaverin (MDC) fluorescence.The levels of LC3 which were induced by radiation and rapamycin were measured by Western blot assay.Cell proliferation was detected by MTT assay.The invasion of SW480 colon cells was measured with a Transwell.Cell wound healing assay was used to observe the migration of SW480 colon cells.Results Heavy ion and X-ray radiation could induce autophagy in SW480 cells in a dose dependent manner i.e., the autophagy level increased along with irradiation dose (F =458.526, P ＜ 0.05) , but this induction of autophagy was inhibited by chloroquine.Rapamycin could also induce autophagy in SW480 cells and it had a synergistic effect with irradiation (F =189.393, P ＜ 0.05).The abilities of invasion, migration and proliferation of SW480 cells were reduced by irradiation and the combination treatment of irradiation and rapamycin (F =194.692, 629.917, 302.903, P ＜ 0.05) , but they were enhanced by chloroquine (F =194.692, 629.917, 302.903, P ＜ 0.05).Conclusions Ionization radiation causes cell death by inducing autophagy.

Proteins encoded by regions of difference (RD) of Mycobacterium tuberculosis (MTB) constitute a potential source of specific antigens for vaccine development and immunodiagnosis .In the present study ,four genes named nrdF1 , pe_pgrs35 ,rv1985c ,and rv1986 from RD2 of MTB were cloned and overexpressed in E .coli with the induction of IPTG .Western blotting assay showed that these recombinant fusion proteins could well react with anti-His tag monoclonal antibody ,which in-dicated their good immunoreactivity .The serodiagnosis potential applications of these four proteins in bovine tuberculosis were further evaluated .An indirect ELISA assay was established by using fusion proteins as coating antigens for detection of their specific antibodies in bovine sera .The positive rates were 7 .35% in NrdF1 ,22 .06% in PE_PGRS35 ,16 .18% in Rv1985c and 16 .18% in Rv1986 respectively .All the results suggest that these fusion proteins have the potential application in serodiagnosis of bovine tuberculosis .

Objective:To explore the application of the pioneering TEBMCL (task based evidence-based laboratory medicine team cooperative learning) teaching mode in the teaching of Clinical Biochemical Laboratory Technology. Methods:A total of 336 undergraduates of medical laboratory from 3 classes of Batch 2014 were selected as research objects, and 112 students in class 1 were randomly selected as the teaching reform class, 113 students in class 2 were randomized into control class 1 and 111 students in class 3 into control class 2. The teaching effects achieved by applying the TEBMCL teaching mode to the teaching of Clinical Biochemical Laboratory Technology in the three classes were compared comprehensively and the TEBMCL teaching mode was also evaluated. The Access 2010 and SPSS 17.0 statistical analysis methods were used for statistical analysis. Results:Learning effect: ①Compared with the basic test of the three classes, there was no statistical differences ( P > 0.05); but the in-class test after each chapter showed that the results of the teaching reform class were better than those of the other two classes ( P < 0.05). It was also found that the performance of the control class 1 was better than that of the control class 2 after applying the new TEBMCL teaching mode in the second chapter ( P < 0.05). ②In a number of indicators, it was found that the scores of the reform class were better than those of the control class 1 and the control class 2 ( P < 0.05); ③In the terms of excellent grade and good grade, the teaching reform class was ahead of the control class 1 and the control class 2, and none of students in the teaching reform class failed the graduation design (thesis). In the terms of questionnaires and seminars: TEBMCL teaching mode was carried out for juniors who had professional basic knowledge, with short prcoess and high efficiency, while this method still needed to be improved. Conclusion:The new TEBMCL teaching mode has significant advantages compared with the traditional teaching mode, which can better promote the cultivation of students' abilities and improve the degree of knowledge mastery.

Objective To evaluate the value of different surgical methods in the repair of huge chest wall defect after breast malignant tumor operation.Methods The clinical data of 22 patients with chest wall defect after chest operation were retrospectively analyzed.All patients received one-stage repair for the chest wall defect with different surgical methods.Of the patients,9 cases got repair with latissimus dorsi myocutaneous flap,4 cases received repairment with internal mammary perforator flap of contralateral breast,and the others received dermatoplasty.Results All the 22 cases were successfully repaired.Two cases of dermatoplasty got mild edema who was healed after acitive dressing change.No one got effusion,infection or necrosis.No recurrence or distant metastasis happened except one case of liver metastasis in the follow-up of 6 to 24 months.Conclusions Application of different surgical methods in repair for the chest wall defect can improve patients' life quality.It is easy,safe and effective.We should choose the most suitable surgical method according to individual situation.

OBJECTIVE To analyze the characteristics of levofloxacin-induced hypersensitivity reaction. METHODS Clinical pharmacists participated in the treatment for a case of levofloxacin-induced hypersensitivity reaction， and adjudged the relationship of levofloxacin with hypersensitivity reaction according to relative standards. Retrieved from CNKI， VIP， Wanfang database， PubMed and Embase， relevant literature about levofloxacin-induced hypersensitivity reaction was collected and analyzed. RESULTS Clinical pharmacists suggested checking the patient’s previous medication and allergy history based on symptoms such as fever and systemic rash， and determined that the drug hypersensitivity was “likely” or “highly likely” to be associated with levofloxacin. Clinicians provided symptomatic treatment to the patient based on the judgment of clinical pharmacists， and the patient improved after treatment. Results of the literature analysis showed that among 31 involved patients， there were 23 males and 8 females； 18 patients aged 50 and above； the incubation period of 24 patients was within 4 days after medication. The main adverse drug reactions were drug hypersensitivity syndrome， fixed drug eruption， erythema multiforme， etc. Most patients were improved after withdrawal and symptomatic treatment. CONCLUSIONS Hypersensitivity reaction is the rare adverse drug reaction of levofloxacin， mostly occurring within 2.5 h to 4 days after administration， and it is more likely to occur in middle-aged and elderly patients. Before clinical use， patients should be asked about their drug allergy history in detail； when patients experience fever or rash without obvious causes， medication should be stopped promptly and symptomatic treatment should be taken to ensure the safety and effectiveness of the patients’ medication.

BACKGROUND: Female breast cancer (FBC) has become the most prevalent malignancy worldwide. We aimed to evaluate the global and regional burden in epidemiological trends and factors associated with the incidence and mortality of FBC. METHODS: FBC incidence and mortality in 60 selected countries by cancer registry data integrity in 2020 were estimated from the GLOBOCAN database, and their association with the human development index (HDI) was further evaluated. Trends of age-standardized rates of incidence and mortality in 60 countries from 2000 through 2019 were evaluated by joinpoint regression analysis using data of Global Burden of Disease 2019. The association between potential behavioral, metabolic, and socioeconomic risk factor exposure at the nation level retrieved from the World Bank and Global Health Observatory and the incidence and mortality of FBC were evaluated by multivariate linear regression. RESULTS: FBC incidence and mortality varied greatly in the 60 included countries. Higher incidence and mortality rates were typically observed in countries with higher HDIs and vice versa. During 2000 to 2019, significantly increasing trends in incidence and mortality were observed in 26 (average annual percent changes [AAPCs], 0.35-2.96) and nine countries (AAPC, 0.30-1.65), respectively, while significantly decreasing trends in both incidence and mortality were observed in 22 countries, most of which were high-HDI countries. Among the population aged ≥40 years, there were 26 and 11 countries showing significantly increased trends in incidence and mortality, respectively. Ecological analysis showed that countries with higher prevalence rates of high cholesterol and higher health expenditures were more likely to have higher FBC incidence, and countries with higher rates of obesity and poorer universal health coverage were more likely to have higher FBC mortality. CONCLUSIONS Despite decreased or stabilized FBC incidence and mortality rates were observed in some countries with high HDI over the past decades, disease burden became even severer in developing countries, especially for the population aged ≥40 years. Effective targeted preventive programs are strongly encouraged to reduce the FBC disease burden worldwide.
Breast Neoplasms/epidemiology* ; Female ; Global Health ; Humans ; Incidence ; Registries ; Risk Factors