1.Research and application of NVP-BEZ235 in lung cancer
Xiaoyu CHAI ; Meng XU ; Xinmin LIU
Journal of International Oncology 2017;44(5):383-385
NVP-BEZ235 is a newly developed dual phosphatidyl linositol kinase 3-kinase (PI3K) and mammalian target of rapamycin (mTOR) inhibitor.Studies have revealed that NVP-BEZ235 combinate with other drugs were effective in the treatment of lung cancer.NVP-BEZ235 might have a potential application value for the treatment of lung cancer of EGFR mutation subtype and KRAS mutation subtype.
2.Angiographic characteristics of lower extremities in diabetic foot patients
Haitao ZHANG ; Meng CHAI ; Huilan LUO
Chinese Journal of Interventional Cardiology 1993;0(02):-
Objective To explore the angiographic characteristic of lower extremities of patients with diabetic foot. Methods The angiographic results of 35 lower extremities of diabetic patients, the characteristics of respective clinical stages and the stenosis degree at different arterial segments were undergone statistical analysis. Results (1) A lotal of 210 arterial segments were divided into the above-knee and the below-knee section. There was significant difference in stenosis degree between the two sections (P
3.Computer-aided voluntary counseling and test:a pilot trial
Jing CHAI ; Debin WANG ; Wangquan XU ; Meng ZHOU
Chinese Journal of Disease Control & Prevention 2008;0(04):-
Objective This study aimed at soliciting preliminary data about the feasibility and effectiveness of a computer-aids for HIV/AIDS voluntary counseling and test (VCT) developed by ourselves and inform further refinement and evaluation of the software.Methods Informant qualitative interviews,structured questionnaires and audio-recorded counseling cases were used in gathering data.Pre-and post-intervention statistical comparisons of quantitative data and expert reviews of qualitative materials were performed in deriving evaluation outcomes.Results Application of the software increased per episode counseling time from 5.55 minutes to 10.73 minutes;coverage of critical counseling components by over 1.5 folds;and successful memory of core knowledge items from 40.51% to 86.34%.Most participating counselors and clients perceive the software as feasible and effective.Conclusions The software put forth merits further researches.
4.Development of a computer-aided for voluntary counseling and test
Debin WANG ; Jing CHAI ; Meng ZHOU ; Wangquan XU
Chinese Journal of Disease Control & Prevention 2008;0(04):-
Objective This study aims at developing a computer aid for performing HIV/AIDS counseling and test,so as to standardize VCT operating procedures and help frontline counselors provide high quality VCT service.Methods Rapid prototyping was employed in which primitive VCT standard operation procedure (SOP) and prototype software were generated through literature reviews,counseling case studies and expert panel activities first and then refined through consecutive rounds of piloting at various VCT settings.Results A pragmatic SOP and computer-aid for performing routine VCT services were put forward.It consists of 5 main application modules including performing counseling,making appointment,managing data,developing counseling skill and setting system parameters.Conclusions Our study suggests that standardization and computerization of complex VCT service is feasible and the system we had produced provides a new means for improving the service.
5.The diagnostic value of MR perfusion weighted imaging on complications and tumor recurrence in hypopharyngeal and laryngeal cancer after operation and radiotherapy
Xiangshui MENG ; Xiangjun CHAI ; Qingguo REN ; Hui LI ; Xiangxing MA
Chinese Journal of Radiology 2016;50(10):758-761
Objective To explore diagnostic value of MR perfusion weighted imaging(PWI)on complications and tumor recurrence in hypopharyngeal and laryngeal cancer after operation and radiotherapy. Methods MR PWI was performed in 31 patients with hypopharyngeal and laryngeal cancer who suffer from tumor recurrence, granulation or infection after operation and radiotherapy. Blood flow (BF), blood volume(BV), mean transit time(MTT) and time to peak (TTP) values were measured in the lesions. Analysis of variance and pair-wise comparison of q test were used for statistical analysis. Results Eleven cases with tumor recurrence,11 case with granulation tissues, 9 cases with infection were confirmed by pathological examinations. Average BF, BV, MTT and TTP values of recurrent tumors were (145.1 ± 29.3)ml · 100 g-1 · min-1,(14.2 ± 3.2)ml · 100 g-1,(5.4 ± 0.6)s,(13.7 ± 1.3)s respectively;Average BF, BV MTT and TTP values of granulation tissues were(109.1±27.4)ml·100 g-1·min-1,(11.1±1.7)ml·100 g-1,(7.7±1.0)s, (19.8 ± 2.1)s respectively;Average BF, BV, MTT and TTP values of infectious tissues were(86.9 ± 7.7)ml · 100 g-1·min-1,(8.8±1.0)ml·100 g-1,(8.0±0.9)s,(19.7±1.3)s respectively. Average BF and BV values of the recurrent tumors group were higher than those of the granulation(q=4.89, 4.64 respectively,P<0.01)and infection group(q=7.52,7.71 respectively,P<0.01)respectively. Average BV values of granulation group was higher than that of the infection group(q=3.31,P<0.05), Average MTT and TTP values of recurrent tumor group were lower than those of the granulation (q=9.38, 12.48 respectively,P<0.01)and infection group(q=9.77, 11.53 respectively,P<0.05). There were no significant difference in average BF, MTT and TTP between the granulation and infection group. Conclusion MR PWI can be helpful in the diagnosis of complications and tumor recurrence in hypopharyngeal and laryngeal cancer after operation and radiotherapy.
6.Study Progress in Pharmacokinetics of Proton Pump Inhibitors
Rongrong CHAI ; Gefei MENG ; Jianing DING ; Quangang ZHU
China Pharmacist 2017;20(2):331-333
Proton pump inhibitors are H+ /K+-ATPase inhibitors, which can efficiently inhibit gastric acid secretion for a long time. As the latest inhibitory gastric acid drugs, proton pump inhibitors are the best choices for acid-related diseases such as gastroe-sophageal reflux disease, peptic ulcer and gastrointestinal lesions caused by nonsteroidal anti-inflammatory drugs. Proton pump inhibi-tors have significant inhibition to basal gastric acid, night gastric acid and gastric acid secretion caused by gastrin and food stimulation. This article reviewed the pharmacokinetic characteristics of five proton pump inhibitors in domestic market.
7.Impact of invasive treatment strategy on health-related quality of life six months after non-ST-elevation acute coronary syndrome
Lixia YANG ; Yujie ZHOU ; Zhijian WANG ; Yueping LI ; Meng CHAI
Journal of Geriatric Cardiology 2014;(3):206-211
BackgroundFew studies have compared change in the health-related quality of life (HRQL) following treatment of non-ST-elevation acute coronary syndrome (NSTE-ACS) with either percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG). This study is tocompare changes in HRQL six months after hospital discharge between NSTE-ACS pa-tients who underwent either PCI or CABG.Methods HRQL was assessed using the Seattle angina questionnaire at admission and six months after discharge in 1012 consecutive patients with NSTE-ACS. To assess associations of PCI and CABG with HRQL changes, logistic regression models were constructed treating changes in the score of each dimension of the Seattle angina question-naire as dependent variables.Results Although both the PCI and CABG groups experienced angina relief and other improvements at 6-month follow-up (P<0.001), the CABG relative to PCI group showed more significant improvements in angina frequency (P= 0.044) and quality of life (P= 0.028). In multivariable logistic analysis, CABG also was an independent predictor for both im-provement of angina frequency (OR: 1.62, 95%CI: 1.09-4.63,P= 0.042) and quality of life (OR: 2.04, 95%CI: 1.26-6.92,P= 0.038) relative to PCI.Conclusions In patients with NSTE-ACS, both PCI and CABG provide great improvement in disease-specific health status at six months, with that of CABG being more prominent in terms of angina frequency and quality of life.
8.Quality of life and coexisting depression and anxiety of female nurses in general hospitals
Shuxia GENG ; Jing LIU ; Rui AN ; Shumeng LV ; Meng CHAI
Chinese Journal of Behavioral Medicine and Brain Science 2013;(2):160-163
Objective To investigate the relationship between coexisting depression and anxiety (CDA)and quality of life of female nurses in general hospitals.Methods Seven hundred and ninety-three female nurses completed Zung' s Self-rating Depression Scale (SDS),Zung' s Self-rating Anxiety Scale (SAS) and the World Health Organization' s Quality of Life Questionnaire-Brief Version (WHOQOL-BREF).According to the cut-off scores of SDS and SAS,all subjects were divided into 4 groups (non-depression and non-anxiety,pure depression,pure anxiety,and CDA).Group differences in SDS,SAS and WHOQOL-BREF scores were compared.Results Of these 4 groups,CDA group had the highest SDS and SAS scores (P < 0.001) (SDS scores:(34.3 ±5.4),(47.1 ±4.0),(39.4 ± 2.4) and (49.7 ±4.2)) and the lowest WHOQOL-BREF scores (P≤0.033)(WHOQOL-BREF physical domain scores:(15.6 ± 2.0),(13.8 ± 2.0),(13.6 ± 1.6) and (12.1 ± 2.0)).The corresponding stratification analysis (controlling for confounding factors) showed consistent results.Conclusion CDA nurses have the most severe depressive and anxious symptoms and the worst quality of life,and thus are the key target population of mental health service.
9.Scientific Misconduct Encountered By APAME Journals: An Online Survey
Lai-Meng Looi ; Li Xuan Wong ; Cing Chai Koh
The Malaysian Journal of Pathology 2015;37(3):213-218
In June 2015, invitations were sent by email to 151 APAME journals to participate in an online
survey with an objective of gaining insight into the common publication misconduct encountered by
APAME editors. The survey, conducted through SurveyMonkey over a 20-day-period, comprised 10
questions with expansions to allow anecdotes limited to 400 characters, estimated to take less than
10 minutes to complete. Only one invitation was issued per journal, targeting (in order of priority)
editors, editorial board members and editorial staff, and limited by email availability. 54 (36%) journals
responded. 98% of respondents held Editor or Editorial Board positions. All respondent journals
have editorial policies on publication ethics and 96% provide instructions related to ethics. 45% use
anti-plagiarism software to screen manuscripts, the most popular being iThenticate, CrossCheck and
Turnitin. Up to 50% of journals had encountered studies without IRB approval. Author misconduct
encountered were (in rank order): plagiarism (75%), duplicate publication (58%), unjustified
authorship (39%), authorship disputes (33%), data falsification (29%), data/image manipulation
(27%), conflict of interest (25%), copyright violation (17%) and breach of confidentiality (10%).
Reviewer misconduct encountered were: conflict of interest (19%), plagiarism (17%), obstructive
behavior (17%), abusive language (13%) and breach of confidentiality (13%). Notwithstanding the
limitations of the survey and the response rate, a few insights have been gained: (1) the need for
strengthening the ethical culture of researchers/authors and reviewers, (2) anti-plagiarism software
can improve plagiarism detection by about 15%, and (3) the need for technical support to detect
plagiarism, duplicate publication and image manipulation.
10.Expression of protein kinase D1 and its phosphorylation at tyr463 and ser916 in squamous cell carcinoma, Bowen's disease and actinic keratosis
Jing GU ; Baoguo LIU ; Meng ZHOU ; Guoying MIAO ; Chao LYU ; Xiaolei CHAI
Chinese Journal of Dermatology 2017;50(4):247-251
Objective To measure the expression of protein kinase D1 (PKD1),tyr463-phosphorylaed PKD1 (pPKD1-tyr463) and ser916-phos-phorylaed PKD1 (pPKD1-ser916) in squamous cell carcinoma (SCC),Bowen's disease (BD) and actinic keratosis (AK),and to explore their significance.Methods Fresh tissue samples were resected from lesions of patients with SCC (SCC group),BD (BD group) and AK (AK group),as well as from normal skin of healthy human controls (control group),and each group had a sample size of 10.Real-time RT-PCR was performed to measure the mRNA expression of protein kinase D1 gene (PRKD1),and Western blot analysis to determine the protein expression of PKD1,pPKD1-tyr463 and pPKD1-ser916.In addition,immunohistochemical study was conducted to determine the expression of PKD1,pPKD1-tyr463 and pPKD1-ser916 in another 50 paraffin-embedded skin samples of SCC,20 samples of BD,20 samples of AK and 10 normal skin samples.Results PRKD1 mRNA expression significantly differed among the control group (0.64 ± 0.09),SCC group (5.37 ± 1.06),BD group (2.69 ± 0.72) and AK group (2.43 ± 0.46) (F =21.37,P < 0.05),and was significantly higher in the SCC,BD and AK groups than that in the control group (P < 0.05),as well as in the SCC group than that in the AK and BD groups (both P < 0.05).However,no significant difference in the PRKD1 mRNA expression was observed between the BD group and AK group (P > 0.05).Immunohistochemical study showed that the total PKD1 protein and pPKD1-tyr463 in the SCC and BD groups were mainly expressed in the cytoplasm and cell membrane of spinous layer cells and atypical cells,and their expression rates were significantly higher than those in the AK group and control group (all P < 0.01).The pPKD1-ser916 was only slightly expressed in some cancer nests of well-differentiated SCC tissues,but not in poorly-differentiated SCC,AK,BD tissues and normal skin tissues.In the SCC group,the expression rate of PKD1 increased with the increase of the pathological grade of SCC,and the PKD1 expression was positively correlated with pPKD1-tyr463 expression (rcc =0.479,P < 0.05).Western blot results were consistent with immunohistochemical findings.Conclusion PKD1 and pPKD1-tyr463 may be involved in the development and differentiation of skin tumors derived from stratified squamous epithelium,and PKD1 may exert promotive effects on the formation of cutaneous SCC by activating the Tyr463 phosphorylation site.