2.Research progress of tamoxifen resistance mechanism in breast cancer
Fei YU ; Jing HU ; Xuesong CHEN
Practical Oncology Journal 2017;31(2):160-164
Tamoxifen(TAM)is an important therapeutic strategy for the treatment of estrogen receptor(ER)-positive breast cancer.However,tamoxifen resistance is a major cause of endocrine therapy failure.The potential mechanism of TAM resistance is multifactorial and most of them are still unknown.This review presents recent advances in the mechanism of TAM resistance in breast cancer,providing valuable information and ideas for elucidating the mechanism of tamoxifen resistance and overcoming drug resistance.
3.The construction of the systemic emergency protocol in pediatrics
Weiming CHEN ; Fei HU ; Guoping LU
Chinese Pediatric Emergency Medicine 2016;23(7):446-449
Through introducing the current situation of systemic pediatric emergency protocol,including five-level triage system,pediatric critical rescue protocol,pediatric trauma life support,emergency observation and guidelines for the pediatric intrahospital transport,we reviewed the issues of pediatric emergency to put forward recommendations.
4.Comparison of the efficiency and safety of two different treatments in middle cerebral artery stenosis
Xiaolu HU ; Fei GAO ; Kangning CHEN
Chongqing Medicine 2017;46(13):1786-1788
Objective To evaluate the efficacy and safety of percutaneous transluminal angioplasty and stenting of intravascular stenting (PTAS) and internal medicine in the treatment of secondary severe stroke in young patients with severe symptomatic middle cerebral artery stenosis.Methods The clinical data of 77 cases with severe symptomatic middle cerebral artery stenosis(ste nosis rate≥70%)confirmed by digital subtraction angiography(DSA) were collected retrospectively in our hospital from January 2011 to June 2015.The patients were divided into PTAS group and medical treatment group,and the data were collected including the modified Rankin Score (mRS score) at admission,the US National Institutes of Health Stroke volume neurological impairments score (NIHSS score)at admission,as well as mRS score,the recurrence of ischemic stroke,death and intracerebral hemorrhage within 1 year.Results The primary end-point rates within 30 days after enrollment in PTAS group and medical treatment group were 0% and 5.77% respectively,and the stroke recurrence rates within 1 year were 4.35% and 13.46% respectively,The differ ence was not statistically significant(P>0.05).Meanwhile,there was no death and intracerebral hemorrhage in both two groups.The rates of mRS≤1 were 91.30 % and 69.23 % respectively in PTAS group and medical treatment group,and the difference was statistically significant (P<0.05).The rates of mRS≤2 were 95.65 % and 84.62 % respectively in PTAS group and medical treat ment group,and the difference was not statistically significant(P>0.05).Conclusion PTAS is safe for the severe symptomatic middle cerebral artery stenosis,and is more efficient in dectasing the risk of recurrent stroke in young population compared with medical treatment.
5.A comparative assessment of the efficacy of carbomer gel and carboxymethyl cellulose containing artificial tears in dry eyes.
Qing, XIAO ; Yanhua, HU ; Fei, CHEN ; Xiaomin, CHEN
Journal of Huazhong University of Science and Technology (Medical Sciences) 2008;28(5):592-5
The present study aimed to compare the clinical efficacy of a 0.4% carbomer gel and 1% carboxymethyl cellulose (CMC) containing artificial tears in treatment of dry eye patients. Sixty subjects with mean age of 45.89 years who had symptoms and signs of dry eye were enrolled in this prospective, investigator-masked and stratified random sampling study. The subjects were divided into two parallel groups with 30 subjects (60 eyes) in each group. One group received carbomer gel, and the other group received 1% CMC containing artificial tears. Subjects received the drops 3 to 4 times or more per day for 3 months. At the first visit time, the precorneal residence time of these two drops was measured. The efficacy was assessed by comparing the subjective symptoms (ocular dryness, foreign body sensation, burning sensation and pain), and the objective test results of tears breakup time, Schirmer's test and corneal fluorescein staining prior to the study and after the treatment. As a result, the ocular residence time of carbomer gel was significantly longer than that of 1% CMC (P<0.001). Most of the primary subjective symptoms and objective test results were improved after treatment in both carbomer gel group and 1% CMC group. As to the improvement of each symptom and objective test result, carbomer gel was more effective than 1% CMC group (P<0.01). In conclusion, carbomer gel had longer precorneal residence time and was more effective than 1% CMC in the treatment of patients with dry eyes.
Acrylic Resins/*administration & dosage
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Carboxymethylcellulose Sodium/*administration & dosage
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Dry Eye Syndromes/*drug therapy
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Gels/*administration & dosage
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Ophthalmic Solutions/administration & dosage
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Prospective Studies
6.Human papillomavirus genotypes in male patients attending the STD clinic in Zhenjiang area.
Li-ming LI ; Qin CHEN ; Ming ZHANG ; Fei-hu HU ; Gao-fei XIAO ; Jiang LIN
National Journal of Andrology 2015;21(12):1102-1105
OBJECTIVETo investigate the status of human papillomavirus ( HPV) infection and its genotypes in male patients in Zhenjiang area.
METHODSUsing PCR and reverse dot blot hybridization, we determined the genotypes of HPV DNA in 245 male patients at our Clinic of Dermatology and STD.
RESULTSThe total rate of HPV infection was 43.67% (107/245), and 18 subtypes were detected. Among the 107 HPV-positive cases, low-risk, high-risk, and combined high- and low-risk infections accounted for 39.25% (42/107), 38.32% (41/107), and 22.43% (24/107), respectively. The most notable low-risk HPV types were HPV6 and HPV11, and the most notable high-risk HPV types were HPV16, HPV52, and HPV58. The rates of single infection and multi-infection were 53.27% (57/107) and 46.73% (50/107), respectively. One case had the most types, infected with 8 genotypes. No statistically significant differences were observed in the total rate of HPV infection among different age groups (Χ2 = 7.999, P > 0.05).
CONCLUSIONThe dominant subtypes of HPV infection in male patients in Zhenjiang area were HPV6, HPV11, and HPV16. The most common subtypes were HPV6 and HPV11 in low-risk infection, and HPV16, HPV52, and HPV58 in high-risk infection.
China ; DNA, Viral ; Genotype ; Humans ; Male ; Papillomaviridae ; classification ; Papillomavirus Infections ; diagnosis ; virology ; Polymerase Chain Reaction
7.Effects of active and passive smoking on chronic kidney disease in patients with type 2 diabetes mellitus
Fei JIANG ; Miao CHEN ; Cheng HU ; Yuqian BAO ; Weiping JIA
Chinese Journal of Internal Medicine 2014;53(11):858-864
Objective This study aimed to assess the effects of active and passive smoking on chronic kidney disease (CKD) in patients with type 2 diabetes mellitus (T2DM).Methods Seven hundred and five patients with T2DM were recruited in the study and were divided into three groups based on smoking status as active smokers,passive smokers and non-smokers.Twenty-four hour urinary albumin excretion (24hUAE) was measured,and estimate glomerular filtration rate (eGFR) was calculated with age and blood creatinine levels.Results (1) The proportion of CKD in T2DM in the present study was 31.63% (223/705) with 28.6% (22/77),30.0% (15/50) and 29.6% (73/247) for non-smokers,passive smokers and active smokers in men,and 29.9% (40/134),35.9% (66/184) and 7/13 for non-smokers,passive smokers and active smokers in women,respectively.In comparison with non-smokers,a higher risk of CKD was found in both passive and active smokers (OR =1.07 and OR =1.05 in men ; OR =1.31 and OR =2.74 in women,respectively).(2) Compared with non-smokers,passive smokers had a significant higher risk for albuminuria in women (OR =2.02,P =0.016).(3) After adjusting for gender,age,duration of T2DM,BMI,systolic blood pressure,glycosylated hemoglobin A1C and lipids,there was a significant decrease in eGFR between active and never smokers (P =0.018)or passive smokers (P =0.000) in women.No differences could be found in eGFR between each smoking statues in men.Conclusions Smoking exposure alone confers a high risk for CKD in patients with T2DM.Our results highlight an importance in implementation of a smoke-free environment for patients with T2DM.
8.Correlative Study of Scan Beginning Time with Ejection Fraction of Heart in Angiography of Brain by Spiral CT and Its Clinical Application
Hongjun FEI ; Chuanxiu ZHANG ; Weixia CHEN ; Haiping HU ; Jie LI
Journal of Practical Radiology 2001;0(08):-
Objective To find up a suitable beginning scan time so that to assure the image quantity during CTA of brain.Methods 30volunteers were checked by heart colour sonography first,then CTA at earlier stage was done,when the density in basilar artery high up to120 HU,that time was regarded the time as beginning scan time,the relative curve between beginning scan time and ejection fraction(EF) was drew,according to this relative curve,34 patients were examined by CTA,the displaying situation of vessel was evaluated comparatively with DSA in part of patients.Results According to this method,the successful rate of CTA in patient’s group was 100%,the trunk of brain vessel and its 1~3 level branch were showed in 100%,the 4~5 level branch of middle cerebal artery showed in 94.1%(32/34).Conclusion According to EF of heart to determine the beginning scan time of CTA is practical,that the image quantity of CTA can be assured.
9.Protective effects of a c-jun N-terminal kinase inhibitor, SP600125, against D-galactosamine/lipopolysaccharide induced acute liver failure in mice
Long CHEN ; Haozhen YANG ; Fei PANG ; Zhiheng XU ; Jinhua HU
Chinese Journal of Infectious Diseases 2013;31(7):392-395
Objective To investigate the protective effect of c-jun N-terminal kinase (JNK)inhibitor SP600125 against acute liver failure in mice.Methods Fifty-five male C57/BL6 mice were divided into control group (n =30) and SP600125 group (n =25).The animals were given an intraperitoneal injection of D-galactosamine (D-GalN,400 mg/kg body weight)/lipopolysaccharide (LPS,30 μg/kg body weight).The control group and SP600125 group were given 10% dimethyl sulfoxide (15 mL/kg body weight) or SP600125 (75 mg/kg body weight) subcutaneously 12 h and 1 h before D-GalN/LPS administration,respectively.D GalN/LPS induced mouse JNK activation was detected by immunohistochemistry for phospho JNK (p-JNK).D-GalN/LPS induced mouse liver cell apoptosis was detected by immunohistochemistry for Caspase-3 and TdT-mediated-dUTP nick endlabeling (TUNEL).Serum alanine transaminase (ALT) level was tested to assess liver injury.Survival rate of mice within 24 h after D-GalN/LPS administration was observed.The comparison between groups was done by t test and survival rate was analyzed by Kaplan-Meier method.Results JNK activity in liver tissues,as indicated by observation of p-JNK positive cells by immunohistochemistry,was diminished 4 h after D-GalN/LPS administration in SP600125 group.Reduced Caspase-3 activity was observed 6 h after D-GalN/LPS administration in SP600125 group (as indicated in immunohistochemistry by Caspase-3 positive cells).Mice in SP600125 group showed significantly lower TUNEL-positive cell count than control group (43.0±24.5 vs 194.7±73.8; t=9.743,P=0.000).Serum ALT level 6 h after D-GalN/LPS administration was (24.0±54.7) U/L in SP600125 group,which was significantly lower than that in control group [(1234.4±478.4) U/L; t=4.734,P=0.0015].SP600125 also significantly improved the survival rate within 24 h after D-GalN/LPS administration (4/5 vs 1/10; x2=5.225,P=0.0223).Conclusions JNK inhibitor SP600125 exerts protective effects against D-GalN/LPS induced acute liver failure in mice by suppressing JNK activation and hepatocyte apoptosis.
10.Optimization of Fermentation Conditions of Bacillus mucilaginosus Mutant 021120
Xiu-Fang HU ; Fei-Xiang YING ; Ji-Shuang CHEN ;
China Biotechnology 2006;0(09):-
Fermentation conditions for the production of spores of Bacillus mucilaginosus mutant 021120 were optimized through the single factor and orthogonal experiments.The results showed that the biomass and formation of spores were obviously affected by carbonate,followed by nitrogen.Addition of CaCO3 and enhancing air flux notably promoted the formation of spores.The optimal culture medium was composed of 2% starch,0.4% Yeast,0.1% K2HPO4,0.1% MgSO4?7H20 and 0.5 %CaCO3,pH7.5.6% of the inoculum prepared with two-stage extensive culture was inoculated into a 70L fermentor.The fermentation was carried out with 2.0~2.5 vvm of air flux at 32℃ for 38~42h,and the spores of 9.80?108 cfu ml-1 was obtained.Under these optimal fermentation conditions,the capsule was successfully controled and the formation of the spores was effectively improved,thus the satisfying bacteial product was obtained.