1.Relationship between Helicobacter pylori infection and disease severity and pathological type of inpatients with intestinal polyps
Wei YOU ; Dalin LU ; Yan CHEN ; Xin WANG ; Yizheng FANG ; Lunshan WANG
Journal of Public Health and Preventive Medicine 2025;36(5):85-88
Objective To investigate the relationship between Helicobacter pylori (Hp) infection and disease severity and pathological type of intestinal polyps in inpatients. Methods The data of 303 inpatients with intestinal polyps in the hospital from August 2022 to February 2025 were collected and analyzed. The clinical characteristics of patients were analyzed, and the influencing factors of pathological types of polyps were explored. Results Among the 303 inpatients with intestinal polyps, there were 135 Hp positive cases and 168 Hp negative cases. The number of polyps, maximum polyp diameter, number of ileocecus/ascending colon/transverse colon polyps, number of descending colon/sigmoid colon/rectal polyps and adenomatous polyps in the Hp-positive group were higher than those in the Hp-negative group (P<0.05). Multivariate logistic regression analysis indicated that age [OR (95%CI)=1.03 (1.01-1.05)] and positive Hp[OR (95%CI)=2.61 (1.62-4.20)] were independent risk factors of occurrence of adenomatous polyps (P<0.05). ROC curve results revealed that the AUCs of age, positive HP and combination in the diagnosis of adenomatous polyps were 0.574, 0.608 and 0.646, and the 95%CI values were 0.509-0.638, 0.545-0.672 and 0.584-0.708 respectively. The efficiency of combination of the two indexes was higher than that of single diagnosis. Conclusion Hp infection is associated with disease severity in inpatients with intestinal polyps, and it may be involved in the occurrence and development of adenomatous polyps.
2.Relationship between Helicobacter pylori infection and disease severity and pathological type of inpatients with intestinal polyps
Wei YOU ; Dalin LU ; Yan CHEN ; Xin WANG ; Yizheng FANG ; Lunshan WANG
Journal of Public Health and Preventive Medicine 2025;36(5):85-88
Objective To investigate the relationship between Helicobacter pylori (Hp) infection and disease severity and pathological type of intestinal polyps in inpatients. Methods The data of 303 inpatients with intestinal polyps in the hospital from August 2022 to February 2025 were collected and analyzed. The clinical characteristics of patients were analyzed, and the influencing factors of pathological types of polyps were explored. Results Among the 303 inpatients with intestinal polyps, there were 135 Hp positive cases and 168 Hp negative cases. The number of polyps, maximum polyp diameter, number of ileocecus/ascending colon/transverse colon polyps, number of descending colon/sigmoid colon/rectal polyps and adenomatous polyps in the Hp-positive group were higher than those in the Hp-negative group (P<0.05). Multivariate logistic regression analysis indicated that age [OR (95%CI)=1.03 (1.01-1.05)] and positive Hp[OR (95%CI)=2.61 (1.62-4.20)] were independent risk factors of occurrence of adenomatous polyps (P<0.05). ROC curve results revealed that the AUCs of age, positive HP and combination in the diagnosis of adenomatous polyps were 0.574, 0.608 and 0.646, and the 95%CI values were 0.509-0.638, 0.545-0.672 and 0.584-0.708 respectively. The efficiency of combination of the two indexes was higher than that of single diagnosis. Conclusion Hp infection is associated with disease severity in inpatients with intestinal polyps, and it may be involved in the occurrence and development of adenomatous polyps.
3.Construction of performance management system for pharmacy department of tertiary public hospitals under new situation
Xiaolan WANG ; Jie PAN ; Jing DAI ; Yi GE ; Geng CHEN ; Aiming SHI
China Pharmacy 2024;35(2):129-133
OBJECTIVE To provide reference for improving the work efficiency of staff and promoting the discipline construction of pharmacy department. METHODS By analyzing the current situation of performance management in the pharmacy department of our hospital, the key successful factors were sorted out, strategic decoding was carried out and key performance indicators were extracted. The quarterly and annual performance appraisal forms were formulated for the departments of pharmacy warehouse, outpatient pharmacy, ward pharmacy, clinical pharmacy department, prescription examination center, laboratory and other departments; the performance management information platform was built. The work efficiency and output of each department were compared half a year before and after the implementation of the performance management plan. RESULTS After the implementation of the program, the average queuing time for drug collection in the outpatient department was shortened from 5 minutes to 3 minutes, the average number of dispensing infusion bags per hour in the pharmacy intravenous admixture services increased from 50 bags to 60 bags, and antibacterial use density of the hospital decreased from 42.7 DDD(defined daily doses) to 40.2 DDD. The number of academic papers published had increased from 8 to 10, and the satisfaction of clinical departments with ward pharmacies increased from 85% to 95%. CONCLUSIONS The performance management system has been successfully established in pharmacy department of our hospital, which can improve the enthusiasm of pharmacists, reflect the value of pharmaceutical care, and promote the discipline construction of pharmacy.
4.National bloodstream infection bacterial resistance surveillance report (2022) : Gram-negative bacteria
Zhiying LIU ; Yunbo CHEN ; Jinru JI ; Chaoqun YING ; Qing YANG ; Haishen KONG ; Haifeng MAO ; Hui DING ; Pengpeng TIAN ; Jiangqin SONG ; Yongyun LIU ; Jiliang WANG ; Yan JIN ; Yuanyuan DAI ; Yizheng ZHOU ; Yan GENG ; Fenghong CHEN ; Lu WANG ; Yanyan LI ; Dan LIU ; Peng ZHANG ; Junmin CAO ; Xiaoyan LI ; Dijing SONG ; Xinhua QIANG ; Yanhong LI ; Qiuying ZHANG ; Guolin LIAO ; Ying HUANG ; Baohua ZHANG ; Liang GUO ; Aiyun LI ; Haiquan KANG ; Donghong HUANG ; Sijin MAN ; Zhuo LI ; Youdong YIN ; Kunpeng LIANG ; Haixin DONG ; Donghua LIU ; Hongyun XU ; Yinqiao DONG ; Rong XU ; Lin ZHENG ; Shuyan HU ; Jian LI ; Qiang LIU ; Liang LUAN ; Jilu SHEN ; Lixia ZHANG ; Bo QUAN ; Xiaoping YAN ; Xiaoyan QI ; Dengyan QIAO ; Weiping LIU ; Xiusan XIA ; Ling MENG ; Jinhua LIANG ; Ping SHEN ; Yonghong XIAO
Chinese Journal of Clinical Infectious Diseases 2024;17(1):42-57
Objective:To report the results of national surveillance on the distribution and antimicrobial resistance profile of clinical Gram-negative bacteria isolates from bloodstream infections in China in 2022.Methods:The clinical isolates of Gram-negative bacteria from blood cultures in member hospitals of national bloodstream infection Bacterial Resistant Investigation Collaborative System(BRICS)were collected during January 2022 to December 2022. Antibiotic susceptibility tests were conducted by agar dilution or broth dilution methods recommended by Clinical and Laboratory Standards Institute(CLSI). WHONET 5.6 and SPSS 25.0 software were used to analyze the data.Results:During the study period,9 035 strains of Gram-negative bacteria were collected from 51 hospitals,of which 7 895(87.4%)were Enterobacteriaceae and 1 140(12.6%)were non-fermenting bacteria. The top 5 bacterial species were Escherichia coli( n=4 510,49.9%), Klebsiella pneumoniae( n=2 340,25.9%), Pseudomonas aeruginosa( n=534,5.9%), Acinetobacter baumannii complex( n=405,4.5%)and Enterobacter cloacae( n=327,3.6%). The ESBLs-producing rates in Escherichia coli, Klebsiella pneumoniae and Proteus spp. were 47.1%(2 095/4 452),21.0%(427/2 033)and 41.1%(58/141),respectively. The prevalence of carbapenem-resistant Escherichia coli(CREC)and carbapenem-resistant Klebsiella pneumoniae(CRKP)were 1.3%(58/4 510)and 13.1%(307/2 340);62.1%(36/58)and 9.8%(30/307)of CREC and CRKP were resistant to ceftazidime/avibactam combination,respectively. The prevalence of carbapenem-resistant Acinetobacter baumannii(CRAB)complex was 59.5%(241/405),while less than 5% of Acinetobacter baumannii complex was resistant to tigecycline and polymyxin B. The prevalence of carbapenem-resistant Pseudomonas aeruginosa(CRPA)was 18.4%(98/534). There were differences in the composition ratio of Gram-negative bacteria in bloodstream infections and the prevalence of main Gram-negative bacteria resistance among different regions,with statistically significant differences in the prevalence of CRKP and CRPA( χ2=20.489 and 20.252, P<0.001). The prevalence of CREC,CRKP,CRPA,CRAB,ESBLs-producing Escherichia coli and Klebsiella pneumoniae were higher in provinicial hospitals than those in municipal hospitals( χ2=11.953,81.183,10.404,5.915,12.415 and 6.459, P<0.01 or <0.05),while the prevalence of CRPA was higher in economically developed regions(per capita GDP ≥ 92 059 Yuan)than that in economically less-developed regions(per capita GDP <92 059 Yuan)( χ2=6.240, P=0.012). Conclusions:The proportion of Gram-negative bacteria in bloodstream infections shows an increasing trend,and Escherichia coli is ranked in the top,while the trend of CRKP decreases continuously with time. Decreasing trends are noted in ESBLs-producing Escherichia coli and Klebsiella pneumoniae. Low prevalence of carbapenem resistance in Escherichia coli and high prevalence in CRAB complex have been observed. The composition ratio and antibacterial spectrum of bloodstream infections in different regions of China are slightly different,and the proportion of main drug resistant bacteria in provincial hospitals is higher than those in municipal hospitals.
5.National bloodstream infection bacterial resistance surveillance report(2022): Gram-positive bacteria
Chaoqun YING ; Yunbo CHEN ; Jinru JI ; Zhiying LIU ; Qing YANG ; Haishen KONG ; Haifeng MAO ; Hui DING ; Pengpeng TIAN ; Jiangqin SONG ; Yongyun LIU ; Jiliang WANG ; Yan JIN ; Yuanyuan DAI ; Yizheng ZHOU ; Yan GENG ; Fenghong CHEN ; Lu WANG ; Yanyan LI ; Dan LIU ; Peng ZHANG ; Junmin CAO ; Xiaoyan LI ; Dijing SONG ; Xinhua QIANG ; Yanhong LI ; Qiuying ZHANG ; Guolin LIAO ; Ying HUANG ; Baohua ZHANG ; Liang GUO ; Aiyun LI ; Haiquan KANG ; Donghong HUANG ; Sijin MAN ; Zhuo LI ; Youdong YIN ; Kunpeng LIANG ; Haixin DONG ; Donghua LIU ; Hongyun XU ; Yinqiao DONG ; Rong XU ; Lin ZHENG ; Shuyan HU ; Jian LI ; Qiang LIU ; Liang LUAN ; Jilu SHEN ; Lixia ZHANG ; Bo QUAN ; Xiaoping YAN ; Xiaoyan QI ; Dengyan QIAO ; Weiping LIU ; Xiusan XIA ; Ling MENG ; Jinhua LIANG ; Ping SHEN ; Yonghong XIAO
Chinese Journal of Clinical Infectious Diseases 2024;17(2):99-112
Objective:To report the results of national surveillance on the distribution and antimicrobial resistance profile of clinical Gram-positive bacteria isolates from bloodstream infections in China in 2022.Methods:The clinical isolates of Gram-positive bacteria from blood cultures in member hospitals of National Bloodstream Infection Bacterial Resistant Investigation Collaborative System(BRICS)were collected during January 2022 to December 2022. Antibiotic susceptibility tests were conducted by agar dilution or broth dilution methods recommended by Clinical and Laboratory Standards Institute(CLSI). WHONET 5.6 and SPSS 25.0 software were used to analyze the data.Results:A total of 3 163 strains of Gram-positive pathogens were collected from 51 member units,and the top five bacteria were Staphylococcus aureus( n=1 147,36.3%),coagulase-negative Staphylococci( n=928,29.3%), Enterococcus faecalis( n=369,11.7%), Enterococcus faecium( n=296,9.4%)and alpha-hemolyticus Streptococci( n=192,6.1%). The detection rates of methicillin-resistant Staphylococcus aureus(MRSA)and methicillin-resistant coagulase-negative Staphylococci(MRCNS)were 26.4%(303/1 147)and 66.7%(619/928),respectively. No glycopeptide and daptomycin-resistant Staphylococci were detected. The sensitivity rates of Staphylococcus aureus to cefpirome,rifampin,compound sulfamethoxazole,linezolid,minocycline and tigecycline were all >95.0%. Enterococcus faecium was more prevalent than Enterococcus faecalis. The resistance rates of Enterococcus faecium to vancomycin and teicoplanin were both 0.5%(2/369),and no vancomycin-resistant Enterococcus faecium was detected. The detection rate of MRSA in southern China was significantly lower than that in other regions( χ2=14.578, P=0.002),while the detection rate of MRCNS in northern China was significantly higher than that in other regions( χ2=15.195, P=0.002). The detection rates of MRSA and MRCNS in provincial hospitals were higher than those in municipal hospitals( χ2=13.519 and 12.136, P<0.001). The detection rates of MRSA and MRCNS in economically more advanced regions(per capita GDP≥92 059 Yuan in 2022)were higher than those in economically less advanced regions(per capita GDP<92 059 Yuan)( χ2=9.969 and 7.606, P=0.002和0.006). Conclusions:Among the Gram-positive pathogens causing bloodstream infections in China, Staphylococci is the most common while the MRSA incidence decreases continuously with time;the detection rate of Enterococcus faecium exceeds that of Enterococcus faecalis. The overall prevalence of vancomycin-resistant Enterococci is still at a low level. The composition ratio of Gram-positive pathogens and resistant profiles varies slightly across regions of China,with the prevalence of MRSA and MRCNS being more pronounced in provincial hospitals and areas with a per capita GDP≥92 059 yuan.
6.Clinical characteristics and perinatal outcomes of severe fetal growth restriction preceding preeclampsia
Xia XU ; Yanhong XU ; Yizheng ZU ; Guiying WANG ; Jianying YAN
Chinese Journal of Perinatal Medicine 2024;27(9):722-728
Objective:To investigate the clinical characteristics and perinatal outcomes of preeclampsia (PE) with severe fetal growth restriction (FGR) as the initial symptom.Methods:This retrospective cohort study included cases of singleton live births with PE and severe FGR delivered at Fujian Maternity and Child Health Hospital from January 2012 to December 2022. The cases were divided into two groups based on the sequence of severe FGR and hypertension onset: the severe FGR-first group and the hypertension-first group. General data, clinical characteristics, pregnancy complications, and neonatal outcomes were analyzed between the two groups. Statistical analyses were performed using t-tests, Mann-Whitney U tests, and Chi-square tests. Multivariate linear regression or logistic regression analyses were used to adjust for the effects of confounding factors on perinatal outcomes. Results:(1) A total of 307 cases were included in the study, with 194 cases (63.2%) in the severe FGR-first group and 113 cases (36.8%) in the hypertension-first group. Compared to the hypertension-first group, the severe FGR-first group had a higher proportion of severe FGR before 32 weeks, later gestational age at PE diagnosis, lower proportion of early-onset PE, greater gestational age at pregnancy termination, and shorter interval from PE diagnosis to pregnancy termination [40.7% (46/113) vs. 59.3% (115/194), χ2=9.87; (32.8±5.1) weeks vs. (35.6±3.4) weeks, t=5.12; 52.2% (59/113) vs. 25.8% (50/194), χ2=21.80; (34.7±3.1) weeks vs. (36.0±3.2) weeks, t=3.43; all P<0.01]. There was no statistically significant difference in the interval between the diagnosis of severe FGR and hypertension between the two groups. (2) Compared to the hypertension-first group, the severe FGR-first group had a lower preterm birth rate and a higher incidence of premature rupture of membranes [69.0% (78/113) vs. 46.9% (91/194), χ2=14.12; 9.7% (11/113) vs. 19.1% (37/194), χ2=4.72; both P<0.05]. After adjusting for differences in gestational age at termination of pregnancy using multivariate logistic regression analysis, the results showed no statistically significant differences in the incidence of pregnancy complications between the two groups. (3) Compared with the hypertension-first group, the severe FGR-first group had higher neonatal birth weight [(1 757±605) g vs. (2 067±684) g, t=4.12], longer birth length [(41.7±4.3) cm vs. (43.4±4.6) cm, t=3.10], and heavier placentas [(399±158) g v s. (486±147) g, t=2.36]. The rates of cesarean section, severe small for gestational age, and low birth weight were lower [85.8% (97/113) vs. 68.6% (133/194), χ2=11.35; 65.5% (74/113) vs. 49.5% (96/194), χ2=7.40; 87.6% (99/113) vs. 69.6% (135/194), χ2=12.80; all P<0.05]. There were no statistically significant differences in the 1-minute Apgar scores and NICU admission rates between the two groups. After adjusting for differences in gestational age at termination of pregnancy using multivariate regression analysis, it was found that compared with the hypertension-first group, the severe FGR-first group had heavier neonates and a lower risk of cesarean section [ OR (95% CI) were 80.18 (0.95-159.42) and 0.51 (0.26-0.99), both P<0.05]. Conclusions:Pregnant women with severe FGR preceding PE have a later onset of PE and relatively better perinatal outcomes compared to those with hypertension preceding PE. It is necessary to strengthen the monitoring of blood pressure fluctuations in pregnant women with severe FGR preceding PE and fetal growth in pregnant women with hypertension preceding PE.
7.Investigation on oral health knowledge, attitude and behavior of hemiplegic patients
Sisi LIU ; Yizheng WANG ; Ya'nan LIU ; Hui HUI ; Xiaoli WU ; Haifeng WANG
Chinese Journal of Rehabilitation Theory and Practice 2023;29(3):368-372
ObjectiveTo investigate and analyze the knowledge, attitude and behavior of oral health for hemiplegic patients. MethodsFrom August 15 to September 15, 2019, patients with hemiplegia caused by central nervous system damages such as stroke and traumatic brain injury in Beijing Bo'ai Hospital were investigated their demographic information, oral health behavior, oral health knowledge, oral health attitude and utilization of oral health services through paper questionnaires. ResultsA total of 200 questionnaires were sent out and 184 valid questionnaires were collected. There were 103 patients with good brushing habits, and the highest proportion was in independent walkers (χ2 = 6.564,P = 0.038). The average score of oral health knowledge was 5.3, and the average accuracy of oral health knowledge was 75.7%. The average score of oral health attitude was 3.3, and the average positive attitude was 81.8%. Both the knowledge and attuite scores were not significant in different characteristics (Z < 5.299, P > 0.05). There were 59 patients visiting institute of stomatology in past twelve months, and there was no significant difference among genders and travel modes (χ2 < 4.707, P > 0.05). ConclusionThe brushing habits is well in independent walkers. The oral health knowledge and attitude of hemiplegia patients need to be improved, and the utilization of oral health services is low.
8.BRICS report of 2021: The distribution and antimicrobial resistance profile of clinical bacterial isolates from blood stream infections in China
Yunbo CHEN ; Jinru JI ; Zhiying LIU ; Chaoqun YING ; Qing YANG ; Haishen KONG ; Jiliang WANG ; Hui DING ; Haifeng MAO ; Yizheng ZHOU ; Yan JIN ; Yongyun LIU ; Yan GENG ; Yuanyuan DAI ; Hong LU ; Peng ZHANG ; Ying HUANG ; Donghong HUANG ; Xinhua QIANG ; Jilu SHEN ; Hongyun XU ; Fenghong CHEN ; Guolin LIAO ; Dan LIU ; Haixin DONG ; Jiangqin SONG ; Lu WANG ; Junmin CAO ; Lixia ZHANG ; Yanhong LI ; Dijing SONG ; Zhuo LI ; Youdong YIN ; Donghua LIU ; Liang GUO ; Qiang LIU ; Baohua ZHANG ; Rong XU ; Yinqiao DONG ; Shuyan HU ; Kunpeng LIANG ; Bo QUAN ; Lin ZHENG ; Ling MENG ; Liang LUAN ; Jinhua LIANG ; Weiping LIU ; Xuefei HU ; Pengpeng TIAN ; Xiaoping YAN ; Aiyun LI ; Jian LI ; Xiusan XIA ; Xiaoyan QI ; Dengyan QIAO ; Yonghong XIAO
Chinese Journal of Clinical Infectious Diseases 2023;16(1):33-47
Objective:To report the results of national surveillance on the distribution and antimicrobial resistance profile of clinical bacterial isolates from bloodstream infections in China in 2021.Methods:The clinical bacterial strains isolated from blood culture from member hospitals of Blood Bacterial Resistant Investigation Collaborative System (BRICS) were collected during January 2021 to December 2021. Antibiotic susceptibility tests were conducted by agar dilution or broth dilution methods recommended by Clinical Laboratory Standards Institute (CLSI). WHONET 5.6 was used to analyze data.Results:During the study period, 11 013 bacterial strains were collected from 51 hospitals, of which 2 782 (25.3%) were Gram-positive bacteria and 8 231 (74.7%) were Gram-negative bacteria. The top 10 bacterial species were Escherichia coli (37.6%), Klebsiella pneumoniae (18.9%), Staphylococcus aureus (9.8%), coagulase-negative Staphylococci (6.3%), Pseudomonas aeruginosa (3.6%), Enterococcus faecium (3.6%), Acinetobacter baumannii (2.8%), Enterococcus faecalis (2.7%), Enterobacter cloacae (2.5%) and Klebsiella spp (2.1%). The prevalence of methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-resistant coagulase-negative Staphylococcus aureus were 25.3% and 76.8%, respectively. No glycopeptide- and daptomycin-resistant Staphylococci was detected; more than 95.0% of Staphylococcus aureus were sensitive to ceftobiprole. No vancomycin-resistant Enterococci strains were detected. The rates of extended spectrum B-lactamase (ESBL)-producing isolated in Escherichia coli, Klebsiella pneumoniae and Proteus mirabilis were 49.6%, 25.5% and 39.0%, respectively. The prevalence rates of carbapenem-resistance in Escherichia coli and Klebsiella pneumoniae were 2.2% and 15.8%, respectively; 7.9% of carbapenem-resistant Klebsiella pneumoniae was resistant to ceftazidime/avibactam combination. Ceftobiprole demonstrated excellent activity against non-ESBL-producing Escherichia coli and Klebsiella pneumoniae. Aztreonam/avibactam was highly active against carbapenem-resistant Escherichia coli and Klebsiella pneumoniae. The prevalence rate of carbapenem-resistance in Acinetobacter baumannii was 60.0%, while polymyxin and tigecycline showed good activity against Acinetobacter baumannii (5.5% and 4.5%). The prevalence of carbapenem-resistance in Pseudomonas aeruginosa was 18.9%. Conclusions:The BRICS surveillance results in 2021 shows that the main pathogens of blood stream infection in China are gram-negative bacteria, in which Escherichia coli is the most common. The MRSA incidence shows a further decreasing trend in China and the overall prevalence of vancomycin-resistant Enterococci is low. The prevalence of Carbapenem-resistant Klebsiella pneumoniae is still on a high level, but the trend is downwards.
9.Crosstalk between CYP2E1 and PPARα substrates and agonists modulate adipose browning and obesity.
Youbo ZHANG ; Tingting YAN ; Tianxia WANG ; Xiaoyan LIU ; Keisuke HAMADA ; Dongxue SUN ; Yizheng SUN ; Yanfang YANG ; Jing WANG ; Shogo TAKAHASHI ; Qiong WANG ; Kristopher W KRAUSZ ; Changtao JIANG ; Cen XIE ; Xiuwei YANG ; Frank J GONZALEZ
Acta Pharmaceutica Sinica B 2022;12(5):2224-2238
Although the functions of metabolic enzymes and nuclear receptors in controlling physiological homeostasis have been established, their crosstalk in modulating metabolic disease has not been explored. Genetic ablation of the xenobiotic-metabolizing cytochrome P450 enzyme CYP2E1 in mice markedly induced adipose browning and increased energy expenditure to improve obesity. CYP2E1 deficiency activated the expression of hepatic peroxisome proliferator-activated receptor alpha (PPARα) target genes, including fibroblast growth factor (FGF) 21, that upon release from the liver, enhanced adipose browning and energy expenditure to decrease obesity. Nineteen metabolites were increased in Cyp2e1-null mice as revealed by global untargeted metabolomics, among which four compounds, lysophosphatidylcholine and three polyunsaturated fatty acids were found to be directly metabolized by CYP2E1 and to serve as PPARα agonists, thus explaining how CYP2E1 deficiency causes hepatic PPARα activation through increasing cellular levels of endogenous PPARα agonists. Translationally, a CYP2E1 inhibitor was found to activate the PPARα-FGF21-beige adipose axis and decrease obesity in wild-type mice, but not in liver-specific Ppara-null mice. The present results establish a metabolic crosstalk between PPARα and CYP2E1 that supports the potential for a novel anti-obesity strategy of activating adipose tissue browning by targeting the CYP2E1 to modulate endogenous metabolites beyond its canonical role in xenobiotic-metabolism.
10.Potential mechanism of NVP-LDE225 combined with radiotherapy for melanoma
Xin LIU ; Jiabao XIANG ; Yao YIN ; Yizheng WANG ; Yifei CHEN
Chinese Journal of Radiation Oncology 2022;31(10):933-938
Objective:To explore the potential mechanism and feasibility of sonic hedgehog (SHH) signal pathway inhibitor NVP-LDE225 combined with radiotherapy in the treatment of melanoma.Methods:The Gli1 mRNA expression of the melanoma cells (Melan-A and SK-MEL-2) was detected by qPCR. After treatment with NVP-LDE225, GDC-0449 or combined with radiation for 24 hours, the number and activity of Melan-A and SK-MEL-2 were detected by cell counting and CCK-8 kit. The survival and proliferation ratio of Melan-A and SK-MEL-2 were detected by cell cloning. The changes of cell cycle of melanoma Melan-A cells were determined by flow cytometry. The levels of the Bax and Caspase3 of Melan-A apoptosis protein in melanoma cells were detected by Western blot.Results:NVP-LDE225, an inhibitor of Smo, decreased the mRNA expression of Gli1 in the melanoma cells in a dose-dependent manner, inhibited the proliferation ratio of the melanoma cells, induced apoptosis, and arrested melanoma cells in G 0 / G 1 phase. Gamma ray irradiation after NVP-LDE225 treatment further inhibited the SHH signal pathway, arrested the melanoma cells in G 2 / M phase, and further increased the inhibitory effect on melanoma cell proliferation. Conclusions:NVP-LDE225, an inhibitor of Smo, can inhibit SHH signal pathway in melanocytes, suppress cell proliferation, and further increases the effect of inhibiting cell proliferation after combining with irradiation. It can be used as a potential drug in combination with radiotherapy in the treatment of melanoma, which is worthy of further study.


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