1.Establishment of pharmaceutical care model for lower extremity artery disease based on patients’disease self-management ability
Shuzheng JIANG ; Xi CHEN ; Feiyu CHEN ; Shaohui ZHANG
China Pharmacy 2024;35(4):500-505
OBJECTIVE To construct the integrated pharmaceutical care model of in-hospital pharmaceutical care+out-hospital pharmacy outpatient service for patients with lower extremity artery disease (LEAD), so as to improve patients’ disease self- management ability, and the efficacy and safety of therapy. METHODS The in-hospital pharmaceutical care and out-hospital pharmacy outpatient service model was constructed for LEAD patients, including pharmaceutical evaluation, self-management ability education, and pharmacy follow-up, to perform long-term management of patients. Totally 65 LEAD patients admitted to the vascular surgery department of our hospital, receiving pharmacist management, from September, 2021 to December, 2022 were selected as the study objects, and pharmacists conducted in-hospital pharmaceutical care+continuous out-patient management. The efficacy indicators, safety indicators, and patients’s disease self-management ability indicators were compared before and after 3 months of pharmacist management. RESULTS After 3 months of pharmacists’ participation in the management of 65 patients, Fontaine stage decreased in 55 patients, there was the significant difference in Fontaine stage before and after management (P< 0.001). The proportion of patients who completely followed the guidelines for medication increased from 63.1% to 96.9%; the incidence of small bleeding was reduced by 7.7% after pharmacists’ management. The scores of Morisky medication compliance and patients’ disease self-management ability were higher than 3 months ago (P<0.001). Patient proportion with “good” medical satisfaction increased by 18.4%. CONCLUSIONS The in-hospital pharmaceutical care and out-hospital pharmacy outpatient service model of LEAD patients can effectively improve patients’ disease self-management ability, and improve the efficacy and safety of therapy.
2.Construction and characterization of a modA gene mutant strain of Klebsiella pneumoniae
Hui WANG ; Xiaoyu JIANG ; Feiyu LI
Journal of Southern Medical University 2024;44(4):748-756
Objective To construct a mutant strain of Klebsiella pneumoniae NTUH-K2044 with modA gene deletion and its complementary strain and explore the role of modA gene in modulating anaerobic nitrate respiratory growth and phenotypes of K. pneumoniae. Methods The modA deletion mutant K. pneumoniae strain was constructed by homologous recombination using the suicide vector pKO3-Km. To obtain the complementary strain C-modA, the whole sequence fragment containing the promoter, open reading frame and terminator regions of modA was cloned into pGEM-T-easy and electrically transformed into the modA deletion mutant. The NTUH-K2044 wild-type strain, modA gene deletion mutant and complementary strain were compared by measuring in vitro anaerobic nitrate respiration growth, competitiveness index, biofilm quantification, mucoviscosity assay and morphological measurement using Image J. Results The modA deletion mutant strain ΔmodA and the complementary strain C-modA were successfully constructed. The modA gene knockout strain showed inhibited anaerobic nitrate respiratory growth compared with the wild-type and C-modA strains with significantly weakened competitiveness, reduced capacity of biofilm synthesis during anaerobiosis, and lowered mucoviscosity under anaerobic conditions. The ΔmodA strain showed a spherical morphology in anaerobic conditions as compared with the normal short rod-like morphology of K. pneumoniae, with also distinctly shorter length than the wild-type and C-modA strains. Conclusion The molybdate transport system encoding gene modA is associated with the pathogenic capacity of K. pneumoniae by modulating its anaerobic nitrate respiration, competitiveness, biofilm formation, hypermucoviscous phenotype and morphology.
3.Construction and characterization of a modA gene mutant strain of Klebsiella pneumoniae
Hui WANG ; Xiaoyu JIANG ; Feiyu LI
Journal of Southern Medical University 2024;44(4):748-756
Objective To construct a mutant strain of Klebsiella pneumoniae NTUH-K2044 with modA gene deletion and its complementary strain and explore the role of modA gene in modulating anaerobic nitrate respiratory growth and phenotypes of K. pneumoniae. Methods The modA deletion mutant K. pneumoniae strain was constructed by homologous recombination using the suicide vector pKO3-Km. To obtain the complementary strain C-modA, the whole sequence fragment containing the promoter, open reading frame and terminator regions of modA was cloned into pGEM-T-easy and electrically transformed into the modA deletion mutant. The NTUH-K2044 wild-type strain, modA gene deletion mutant and complementary strain were compared by measuring in vitro anaerobic nitrate respiration growth, competitiveness index, biofilm quantification, mucoviscosity assay and morphological measurement using Image J. Results The modA deletion mutant strain ΔmodA and the complementary strain C-modA were successfully constructed. The modA gene knockout strain showed inhibited anaerobic nitrate respiratory growth compared with the wild-type and C-modA strains with significantly weakened competitiveness, reduced capacity of biofilm synthesis during anaerobiosis, and lowered mucoviscosity under anaerobic conditions. The ΔmodA strain showed a spherical morphology in anaerobic conditions as compared with the normal short rod-like morphology of K. pneumoniae, with also distinctly shorter length than the wild-type and C-modA strains. Conclusion The molybdate transport system encoding gene modA is associated with the pathogenic capacity of K. pneumoniae by modulating its anaerobic nitrate respiration, competitiveness, biofilm formation, hypermucoviscous phenotype and morphology.
4.Generating synthetic CT in megavoltage CT image-guided adaptive radiotherapy
Yuting CHEN ; Feiyu ZHOU ; Fuli ZHANG ; Huayong JIANG ; Diandian CHEN ; Yanxiang GAO ; Yanjun YU ; Xiaoyun LE ; Na LU
Chinese Journal of Medical Physics 2024;41(7):813-820
Objective To propose a deep learning neural network approach for transforming megavoltage computed tomography(MVCT)images of cervical cancer into pseudo kilovoltage computed tomography(kVCT)images with high signal-to-noise ratio and contrast-to-noise ratio,thus providing three-dimensional anatomical images and localization information required for adaptive radiotherapy of cervical cancer,and guiding the accelerator to achieve precise treatment.Methods The MVCT and kVCT images of 54 patients treated with cervical cancer radiotherapy were collected,with 44 cases randomly selected as the training set,and the remaining 10 cases as the test set.A cyclic generative adversarial network with gating mechanism and multi-channel data input was used to synthesize pseudo-kVCT images from MVCT images.The network training results were evaluated with imaging quality evaluation parameters,such as mean absolute error(MAE),peak signal-to-noise ratio(PSNR),and structural similarity index(SSIM).Results The MAE,PSNR,and SSIM of MVCT imagesvspseudo-kVCT(5:5)images were(24.9±0.7)HUvs(17.8±0.3)HU,(29.8±0.2)dBvs(30.7±0.2)dB,and 0.841±0.007 vs 0.898±0.003,respectively.Conclusion The generated pseudo-kVCT images have advantages in noise reduction and contrast enhancement,and can reduce the need for additional MV-kVCT electron density calibration in dose calculations.The dose calculation ability of pseudo-kVCT is comparable to that of MVCT,providing a possibility for the application of pseudo-kVCT images in image-guided adaptive radiotherapy.
5.Application of neurosurgical microscopic technology training in medical undergraduate teaching
Wenjie MA ; Guangfu DI ; Liang WANG ; Feiyu DING ; Yan SUN ; Xiwang XIANG ; Qiang LI ; Xiaochun JIANG
Chinese Journal of Medical Education Research 2023;22(1):115-119
There are still many existing problems in the training of medical undergraduates and microsurgery talents in China, such as lack of scientific research ability and scientific literacy of medical undergraduates, insufficient practical ability, short of scientific research opportunities for medical undergraduates, and inadequate talent reserve in microsurgery. In view of the above shortcomings, Wannan Medical College has established a training course on microneurosurgery technology for medical undergraduates, and made a preliminary exploration to solve the above problems. Through the training, undergraduates not only improve their practical ability, but also stimulate their interest in microsurgery, which will help them adapt to clinical and scientific research work at an early stage. Neurosurgical microscopic technology training with emphasis on extracurricular expansion as main content, plays an important role in the cultivation of undergraduate microscopic skills, the establishment of basic theories of neurosurgery, the improvement of scientific research accomplishment and the expansion of extracurricular vision.
6.Analysis of pancreaticojejunostomy in laparoscopic pancreaticoduodenectomy
Qingbin LI ; Guangbing LI ; Feiyu LI ; Liyong JIANG ; Yong JIANG ; Jun LIU
Chinese Journal of Hepatobiliary Surgery 2023;29(2):155-160
Laparoscopic pancreaticoduodenectomy is an important surgical undertaking, mostly used for benign and malignant tumors in the pancreatic head and periampullary region. The postoperative pancreatic fistula is the main factor to cause death after pancreaticoduodenectomy, and pancreaticojejunostomy is an independent risk factor for pancreatic fistula. In order to reduce the incidence of pancreatic fistula, surgeons have proposed dozens of pancreaticojejunostomy, but so far there are no randomized trials proved which method of pancreaticojejunostomy is better than the others. This article reviews the methods and characteristics of different pancreaticojejunostomy in laparoscopic pancreaticoduodenectomy.
7. Conditional Deletion of Foxg1 Alleviates Demyelination and Facilitates Remyelination via the Wnt Signaling Pathway in Cuprizone-Induced Demyelinated Mice
Fuxing DONG ; Dajin LIU ; Feiyu JIANG ; Yaping LIU ; Xiuxiang WU ; Xuebin QU ; Jing LIU ; Yan CHEN ; Ruiqin YAO ; Fuxing DONG ; Hongbin FAN
Neuroscience Bulletin 2021;37(1):15-30
The massive loss of oligodendrocytes caused by various pathological factors is a basic feature of many demyelinating diseases of the central nervous system (CNS). Based on a variety of studies, it is now well established that impairment of oligodendrocyte precursor cells (OPCs) to differentiate and remyelinate axons is a vital event in the failed treatment of demyelinating diseases. Recent evidence suggests that Foxg1 is essential for the proliferation of certain precursors and inhibits premature neurogenesis during brain development. To date, very little attention has been paid to the role of Foxg1 in the proliferation and differentiation of OPCs in demyelinating diseases of the CNS. Here, for the first time, we examined the effects of Foxg1 on demyelination and remyelination in the brain using a cuprizone (CPZ)-induced mouse model. In this work, 7-week-old Foxg1 conditional knockout and wild-type (WT) mice were fed a diet containing 0.2% CPZ w/w for 5 weeks, after which CPZ was withdrawn to enable remyelination. Our results demonstrated that, compared with WT mice, Foxg1-knockout mice exhibited not only alleviated demyelination but also accelerated remyelination of the demyelinated corpus callosum. Furthermore, we found that Foxg1 knockout decreased the proliferation of OPCs and accelerated their differentiation into mature oligodendrocytes both in vivo and in vitro. Wnt signaling plays a critical role in development and in a variety of diseases. GSK-3β, a key regulatory kinase in the Wnt pathway, regulates the ability of β-catenin to enter nuclei, where it activates the expression of Wnt target genes. We then used SB216763, a selective inhibitor of GSK-3β activity, to further demonstrate the regulatory mechanism by which Foxg1 affects OPCs in vitro. The results showed that SB216763 clearly inhibited the expression of GSK-3β, which abolished the effect of the proliferation and differentiation of OPCs caused by the knockdown of Foxg1. These results suggest that Foxg1 is involved in the proliferation and differentiation of OPCs through the Wnt signaling pathway. The present experimental results are some of the first to suggest that Foxg1 is a new therapeutic target for the treatment of demyelinating diseases of the CNS.
8.Study of quantitative diagnosis for prostate cancer-combined MR spectroscopy and diffusion weighted imaging
Xuemei GUO ; Xiaoying WANG ; Feiyu LI ; Xuexiang JIANG
Chinese Journal of Radiology 2010;44(4):387-391
Objective To quantitatively analyze and testify the diagnostic value of combined MRS and DWI for prostate cancer based on sextant localization.Methods Patients who underwent prostate MR examinations in our hospital had MRS and DWI scanning in addition to conventional MRI.The(choline+creatine)/citrate(CC/C)value in each measurable voxel and the minimal ADC value(ADC_(mini))in each sextant were measured.Taking CC/C of no less than 0.911 as the cutoff value for prostate cancer,the ratios of positive voxel(PVR)in sextants were calculated.The selected patients were divided into 2 groups according to the date of examination,for the quantitative analysis and the verification respectively.Group 1 was from Feb,2006 to Dec,2006,and group 2 from Jan,2007 to Jul,2007.The diagnostic efficacy of PVR,ADC_(mini) and their combination was tested by ROC analysis.Results There were 40 patients in group 1 and group 2 respectively for the linear discrimination of the cluster analysis,including 20 patients with prostate cancer and 20 patients without prostate cancer.The linear discrimination equation calculated from group 1 was 'D=3.264×ADC_(mini)-0.205×PVR-4.407'.The areas under curve(Az)of ROC for PVR,ADC_(mini) and D were 0.769,0.910 and 0.909,respectively.In group 2,the Az of ROC for PVR,ADC_(mini) and D were 0.838,0.912 and 0.915,respectively.There were no statistical difference between ADC_(mini)-alone and D in both groups(X~2=0.32 and 1.50,P>0.05).Conclusions Quantitative prostate DWI had higher diagnostic value than MRS.The combined use of MRS and DWI was not superior to the DWI-alone in the diagnostic efficacy of prostate cancer.
9.Diffusion weighted imaging in the evaluation of therapeutic effect of endocrine for prostate cancer with bone metastases
He WANG ; Xiaoying WANG ; Feiyu LI ; Xuemei GUO ; Xuexiang JIANG
Chinese Journal of Medical Imaging Technology 2009;25(10):1833-1836
Objective To evaluate the therapeutic effect of endocrine for prostate cancer with bone metastases with MR diffusion-weighted imaging (DWI). Methods Forty patients with bone metastases from prostate cancer were examined with DWI. Seventeen patients underwent endocrine therapy were recruited as the test group, the other 23 were regarded as the control group. There was no relapse of the metastases according to clinical diagnosis in the test group. DWI sequences were based on steady-state free precession with b value (800 s/mm~2). After identifying the metastasis according to the T1WI and T2WI, ROIs were marked at the metastases, normal muscle, normal bone and bladder on DWI, and the ADC values of the ROIs were calculated respectively. Non-parameter two independent samples test was applicated to compare the ADC values of the metastases between the two groups.Results ADC values of the bone metastases were (1.10±0.50)×10~(-3)mm~2/s in the test group and (1.12±0.30) ×10~-3mm~2/s in the control group (P>0.05).Conclusion MR DWI shows no help in evaluating the therapeutic effect of endocrine for prostate cancer with bone metastases.
10.Preoperative evaluation of the association of ADC with diffusion-weighted imaging and PSA in prostate cancer
Zhiqiang CHEN ; Wenjun YANG ; Xiaoying WANG ; Feiyu LI ; Xuemei GUO ; Yulin GUO ; Xuexiang JIANG
Chinese Journal of Urology 2009;30(10):700-702
Objective To study the changes of the apparent diffusion coefficient (ADC) values and the association with serum prostate specific antigen (PSA) in prostate cancer patients. Methods Diffusion-weighted echo-planar imaging (EPI) sequences were performed in 47 patients with biopsy proved locally confined prostate cancer,age ranged from 56 to 86 years.t-PSA range,f-PSA range and F/T range in serum of all patients were 1.41-603.16 ng/ml,0.10-12.29 ng/ml and 0.01-0.36,respectively.The patients'clinical staging were 2 cases of stage A,18 cases of stage B and 27 cases of stage C,among which 1 cases were well differentiated (Gleason 2-4), 23 were moderately differentiated (Gleason 5-7) and 23 were poorly differentiated(Gleason 8-10),respectively.Images were obtained with a diffusion factor of 800 s/mm2.According to the pathological results obtained by ultrasound guided systemic biopsy,the locations of the prostate cancerous region were marked as one or more of the sextants.The ADC values of every region and whole gland were measured and analyzed with ROC curve.Correlations between the ADC and t-PSA,f-PSA,F/T ratios were analyzed.Results Acceptable images for ADC measurement were obtained in all cases.The mean ADC values of cancerous and noncancerous regions in 47 prostate patients were(1.29±0.28)×10-3mm2/s and (1.78+0.32)×10-3mm2/s and significant difference was noted in ADC values between cancerous and noncancerous regions(t=13.58,P<0.01).Negative correlation was found between the ADC values and t-PSA,f-PSA,(γ=-0.353,P<0.01;γ=-O.401.P<0.01).There were no significant associations between the ADC values and F/T(γ=-0.123,P>0.05). Conclusions The ADC values in cancerous regions were negatively correlated with t-PSA,f-PSA. Measurement of ADCs,combined with serum PSA,might be useful to accurate location and preoperative assessment of tumor.

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