1.Study on clindamycin resistance and molecular epidemiology of bloodstream infection by Staphylococcus aureus
Shan ZHOU ; Bei ZHANG ; Xiuli XU ; Linhan FENG ; Jiayun LIU ; Xiaoke HAO
International Journal of Laboratory Medicine 2015;(24):3517-3519
Objective To understand the clindamycin resistance gene and molecular epidemic of Staphylococcus aureus in the pa‐tients with bloodstream infection in our hospital during 2014 .Methods The clinical isolates of Staphylococcus aureus in clinical bloodstream infection were collected during 2014 .The phenotype of erythromycin to clindamycin induced resistance was assessed by D test .The erm gene was detected by PCR .The different erm types of the molecular epidemiology of Staphylococcus aureus were studied by spa and MLST typing .Results In 33 strains of Staphylococcus aureus ,the isolation rate of MRSA strains were 78 .79% ,moreover all of MRSA strains carried ermA gene .In 7 strains of methicillin sensitive Staphylococcus aureus(MSSA) ,4 strains respectively carried ermB or ermC gene .The results of MLST and spa results showed that the main type of MRSA in our hospital was ST239‐t030 .But MSSA had more types ,such as ST59‐t437 ,ST398‐t3625 and so on .Conclusion MRSA has higher i‐solation rate in our hospital ,which is dominated by ST239‐t030 type .For the detection of gene erm ,ermA (86 .67% ) is the main type .The strains are obviously resistant to antibacterial drugs .The laboratory should strengthen the detection of clindamycin in‐duced resistance for guiding the clinical rational use of antibacterial drugs .
2.The prospective coping styles of nurses in plastic operation room and its influencing factors
Xiufang WEI ; Qian YA ; Linhan LIU ; Huiling JING
Chinese Journal of Practical Nursing 2019;35(4):306-312
Objective To analyze the prospective coping styles of nurses in operation room of plastic surgery department and its influencing factors. Methods A total of 169 nurses of two tertiary first-class hospitals and two secondary hospitals in Yuncheng city were selected as the research objects by convenient sampling from January 2016 to January 2017, their general data, dispositional hope, occupational expectations, occupational values, occupational maturity and prospective coping styles were analyzed. The influencing factors of prospective coping style were analyzed. Results The quality of hope was (31.78±4.24) points, occupational expectation was (72.41±7.24) points, professional values were (86.63 ± 7.02) points, professional maturity was (94.58 ± 6.25) points, and prospective coping style was (40.64 ± 6.13) points in the nurses in plastic surgery operation room. The results of multivariate linear regression model showed that the longer working time, high professional title, high degree of education, high monthly income, longer working hours in plastic surgery operation room, high hope quality, high career expectation, high occupational values and high career maturity were all the prospective coping styles of nurses in the operation room. Significant factors (P <0.05). Conclusions The nurses in the plastic surgery operation room have a certain prospective coping style, improve the treatment of nurses, set up their active work goals, improve their hope traits, career expectations, occupational values and career maturity, which can significantly enhance the level of prospective coping style.
3.T2 Mapping with and without Fat-Suppression to Predict Treatment Response to Intravenous Glucocorticoid Therapy for Thyroid-Associated Ophthalmopathy
Linhan ZHAI ; Qiuxia WANG ; Ping LIU ; Ban LUO ; Gang YUAN ; Jing ZHANG
Korean Journal of Radiology 2022;23(6):664-673
Objective:
To evaluate the performance of baseline clinical characteristics and pretherapeutic histogram parameters derived from T2 mapping of the extraocular muscles (EOMs) in the prediction of treatment response to intravenous glucocorticoid (IVGC) therapy for active and moderate-to-severe thyroid-associated ophthalmopathy (TAO) and to investigate the effect of fat-suppression (FS) in T2 mapping in this prediction.
Materials and Methods:
A total of 79 patients clinically diagnosed with active, moderate-to-severe TAO (47 female, 32 male;mean age ± standard deviation, 46.1 ± 10 years), including 43 patients with a total of 86 orbits in the responsive group and 36 patients with a total of 72 orbits in the unresponsive group, were enrolled. Baseline clinical characteristics and pretherapeutic histogram parameters derived from T2 mapping with FS (i.e., FS T2 mapping) or without FS (i.e., conventional T2 mapping) of EOMs were compared between the two groups. Independent predictors of treatment response to IVGC were identified using multivariable analysis. Receiver operating characteristic (ROC) curve analysis was performed to evaluate the predictive performance of the prediction models. Differences between the models were examined using the DeLong test.
Results:
Compared to the unresponsive group, the responsive group had a shorter disease duration, lower kurtosis (FSkurtosis), lower standard deviation, larger 75th, 90th, and 95th (FS-95th) T2 relaxation times in FS mapping and lower kurtosis in conventional T2 mapping. Multivariable analysis revealed that disease duration, FS-95th percentile, and FS-kurtosis were independent predictors of treatment response. The combined model, integrating all identified predictors, had an optimized area under the ROC curve of 0.797, 88.4% sensitivity, and 62.5% specificity, which were significantly superior to those of the imaging model (p = 0.013).
Conclusion
An integrated combination of disease duration, FS-95th percentile, and FS-kurtosis was a potential predictor of treatment response to IVGC in patients with active and moderate-to-severe TAO. FS T2 mapping was superior to conventional T2 mapping in terms of prediction.
4.Effect of comprehensive schistosomiasis control strategy with focus on cattle and sheep removal in Junshan District,Yueyang City
Wenbin LI ; Ya YANG ; Xiang PAN ; Jianbing LI ; Huixiang LIU ; Shigui LI ; Zhong HE ; Bin CAI ; Linhan LI ; Wanting CHENG ; Yu YANG ; Jie ZHOU ; Shengming LI ; Guanghui REN ; Zhihong LUO ; Yibiao ZHOU ; Qingwu JIANG
Chinese Journal of Schistosomiasis Control 2017;29(4):402-405,411
s] Objective To evaluate the effect of comprehensive schistosomiasis control measures with focus on total removal of cattle and sheep in Junshan District,Yueyang City. Methods The retrospective review and field survey were implemented in the pilot villages in Junshan District. The data of Schistosoma japonicum infection status of human,cattle,sheep and Oncome-lania hupensis snails,and density of snails were gathered and modeled in the period of 2006 to 2016. Results The prevalence of schistosome infection in residents in the pilot villages decreased from 3.44% in 2006 to 0.59% in 2012(F = 14.501,P =0.013). After removal of all the cattle and sheep in 2013,the prevalence of schistosome infection in the residents decreased to zero in 2016(F=14.148,P=0.033). The density of living snails decreased from 0.8833/0.1 m2 in 2006 to 0.3088/0.1 m2 in 2012(F=76.250,P=0.005). Conclusion The comprehensive schistosomiasis control strategy with focus on cattle and sheep removal is remarkably effective.
5.Recent advance in quantitative MRI in glymphatic systems of the brain
Yali ZHAO ; Hongyu WU ; Linhan ZHAI ; Weiqiang LIANG ; Huan LIU ; Chengdong PENG ; Qiuxia WANG ; Jing ZHANG
Chinese Journal of Neuromedicine 2022;21(3):316-320
The glymphatic system, as "waste" clearance pathway in the brain, plays a critical role in maintaining the homeostasis of the brain cell microenvironment. It has been found that changes in the glymphatic system are common in many neurological diseases. MRI is currently the only technology that can achieve human glymphatic imaging, and has the advantages of high soft tissue resolution and sensitivity to tracers. Quantitative MRI can objectively evaluate the changes of inflow and outflow of glymphatic system. Therefore, in this review, we introduce the application of quantitative MRI technology in the glymphatic system in detail, aiming to provide help for the diagnosis and treatment of diseases related to glymphatic system.
6.The role of long non-coding RNA PANDAR in the occurrence and development of malignant tumors
TIAN Linhan ; LIU Xin ; WANG Xicai
Chinese Journal of Cancer Biotherapy 2018;25(9):945-949
长链非编码RNA(long non-coding RNA,lncRNA)最初被认为是不具有功能的“转录噪声”,但越来越多的研究发现, lncRNA的失调在很多肿瘤中起着癌基因或抑癌基因的作用,是癌症发展的关键分子。PANDAR作为一种重要的lncRNA受到了 诸多关注。有研究证明,PANDAR在许多肿瘤中特异性表达,在大多数肿瘤中上调,但在非小细胞肺癌中显著下调,PANDAR的 特异性表达与肿瘤大小、TNM分期和总生存率显著相关。本文通过对lncRNAPANDAR在恶性肿瘤细胞中的主要作用模式、 表 达情况、作用机制及对各类肿瘤发生发展的影响进行综述,旨在为临床恶性肿瘤生物学诊治疗提供新的靶标。
7.Effect of exosome-derived lncRNAin tumor and its microenvironment
TIAN Linhan ; LIU Xin ; WANG Xicai
Chinese Journal of Cancer Biotherapy 2019;26(2):236-240
外泌体是一种纳米级别的生物膜结构,由机体的多种细胞分泌,广泛分布于唾液、血浆、乳汁等体液中。外泌体中含 有蛋白质、mRNA、miRNA、lncRNA、细胞因子、转录因子受体等多种生物活性物质。肿瘤细胞或肿瘤旁细胞分泌的外泌体可将 一些肿瘤特有的生物信息转移到邻近细胞,甚至远处细胞,并且通过这种细胞间通信传递肿瘤的特性,从而促进肿瘤的发生发 展。本综述旨在着重讨论肿瘤细胞及癌旁细胞分泌的含lncRNA的外泌体对肿瘤微环境,肿瘤的生物学特性的影响,为肿瘤的基 础研究及临床诊断治疗提出新的思路。