2.Application of 3D printing technology in percutaneous precise biopsy for standardized residency training
Junma XU ; YueChao YU ; Zhi LIU ; Yu LIU ; Feitong WANG
Chinese Journal of Medical Education Research 2021;20(3):328-331
Objective:To introduce the application of 3D printing technology in standardized residency training of percutaneous precise biopsy.Methods:Twenty-two residents were randomly divided into innovative teaching group and traditional teaching group, with 11 ones in each group. Residents in both groups received standardized training of percutaneous biopsy procedure. Innovative teaching group was given 3D printing template combined with guided operation, while traditional teaching group used bare hand operation. The time spent in biopsy, the times of needle adjustment, the frequency of CT scanning during operation, the positive rate of material sampling and the incidence of complications were compared between the two groups.Results:During the percutaneous lung biopsy, two groups of physicians performed the procedure. There was no significant difference between the two groups in operation time [(22.34±3.12) vs. (23.56±4.21)] and the positive rate of sampling (72.73% vs. 90.91%) ( P> 0.05), but there were significant differences in the times of adjusting biopsy needle during operation [(2.11±0.67) vs. (1.02±0.93)], the frequency of intraoperative CT scanning [(4.35±0.76) vs. (3.12±0.84)] and the incidence of complications (54.55% vs. 27.27%) ( P< 0.05). In percutaneous peritoneal organ biopsy, there was no significant difference among the two groups in the operation time [(16.25±2.89) vs. (15.12±2.59)], the number of CT scans [(3.45±0.79) vs. (2.98±0.23)] and the positive rate (78.57% vs. 88.24%) ( P> 0.05), but there were significant differences in times of intraoperative biopsy needle adjustments [(2.43±0.43) vs. (1.84±0.89)] and the incidence of complications (35.71% vs. 5.88%) ( P< 0.05). Conclusion:The application of 3D printing technology combined with the teaching of three-dimensional guided stent can make percutaneous biopsy technique stylized and standardized. It is of great significance to standardize the operation for improving the quality of medical treatment, and it is worth popularizing in clinical teaching.
3.Influence of brain-derived neutrophic factor on NF-κB, TNF-α, and cell apoptosis in rats with cerebral ischemia-reperfusion injury
Weijun YU ; Zhi YU ; Boda LU ; Kaide LIU ; Laiming FANG
Journal of Chinese Physician 2014;16(12):1645-1648
Objective To investigate the changes of nuclear factor-κB (NF-κB),tumor necrosis factor-α(TNF-α),and cell apoptosis of cerebral ischemia-reperfusion injury and the influence of brain-derived neutrophic factor(BDNF) on these parameters in rats.Methods Eighty-four male Sprague-Dawley (SD) rats were randomly divided into two groups:BDNF (n =42) and control (n =42) groups.The BDNF group was induced using the improved Zea-longa method and were received abdominal injections of BDNF (0.5 μg/μl) immediately after injury.The control group was received abdominal injections with the same dose sodium chloride injection immediately after injury and repeated one time everyday until the rats was killed.Each group was divided into seven subgroups by sacrificed time after injury,including subgroups 1 h,3 h,6 h,12 h,24 h,3 d,and 7 d; each subgroup got 6 rats.Each subgroup were randomly selected three rats after being killed.The expressions of NF-κB and TNF-α of rats contusion peri tissues brain tissue were detected by immunohistochemical methods.Terminal deoxynucleotidyl transferase (TUNEL) method was used to observe the peri cell apoptosis after brain contusion.Results The expressions of NF-κB and TNF-α in BDNF group was significantly decreased relative to the control group (P < 0.05),with a significant positive correlation between two parameters in two groups (P < 0.001).The number of apoptotic cells was significantly decreased in the BDNF group relative to control group (P < 0.05).Conclusions Brain-derived neutrophic factor probably relieves inflammation response,reduces the change of secondary brain injury after traumatic brain injury,and decreases neural cell apoptosis,and finally provides protection of neurocytes.
4.Application on the thickness of nerve fiber layer of the optic disc in pathologic myopia eyes by OCT
Zhi-Cheng, SHI ; Xiao-Liu, LUO ; Yu-Ai, LIU
International Eye Science 2014;(6):1100-1102
AIM: To analyze the application on frequency domain optical coherence tomography ( OCT ) technology of pathologic myopia optic disc neurosensory retinal thickness changes and its relationship with axis oculi, sex and age, and help for the early diagnosis of pathological myopia and primary open angle glaucoma.
METHODS:Collected 96 eyes of normal eyes ( axis oculi 23-24mm) and 153 eyes of pathologic myopia eyes ( axis oculi 25-27mm 80 eyes, >27mm 73 eyes). We measured the thickness of nerve fiber layer of the optic disc by OCT and analyzed their relationship with axis oculi, sex and age with multiple linear regression analysis.
RESULTS: The observation group showed significant smaller average thickness of peripapillary, superior, inferior, nasal than the control group ( P<0. 05 ); the difference in the temporal quadrant between the groups were no statistically significant differences (P>0. 05); The partial correlation coefficient of peripapillary average thickness of nerve fiber layer and axis oculi was -1. 31, gender was 5. 21, age was -0. 12.
CONCLUSION:The thickness of nerve fiber layer of the optic disc in the pathologic myopia eyes are decreased than normal eyes, axis oculi, sex and age are influenced factors. The pathologic myopia patients should use different index combined with optic nerve fiber layer thickness decreased to help for the diagnosis of early primary open angle glaucoma.
5.Recent advances of nasal natural killer/T-cell lymphoma.
Yong LIU ; Hai-yu YANG ; Ming-zhi LU
Chinese Journal of Pathology 2005;34(12):809-812
6.Application of the branched multiple antigenic peptide system in the development of vaccine.
Chinese Journal of Virology 2011;27(1):86-90
Animals
;
Antigens
;
chemistry
;
genetics
;
immunology
;
therapeutic use
;
Drug Therapy
;
Humans
;
Peptides
;
chemistry
;
genetics
;
immunology
;
therapeutic use
;
Vaccines
;
chemistry
;
genetics
;
immunology
;
therapeutic use
8.Pulmonary Diffusing Capacity and BALF Lymphocyte Phenotype in Sarcoidosis
Xiaolin HE ; Zhi LIU ; Lixia HUANG ; Zhenhua LI ; Runjiang YU
Journal of China Medical University 2001;30(2):130-132
Objective: Our aim was to study whether the cellular bronchoalveolar lavage fluid (BALF) profile was associated with the parameters of pulmonary function tests. Methods:Lung function tests and BAL were carried out in 18 untreated, non-smoking patients suffering from sarcoidosis and 18 normal subjects. Results:(1)Lung function tests were normal at rest in patients with sarcoidosis(P>0.05), the single breath carbon monoxide diffusing capacity decreased (P<0.05),and the small airway function decreased too (P<0.05).(2)The percentage of lymphocytes in BALF of sarcoidosis increased comparing with the normal subjects(P<0.01),and the ratio of CD+4 to CD+8 in BALF increased significantly in sarcoidosis(P <0.05), furthermore, the increase of both the percentage of lymphocytes and the ratio of CD+4 to CD+8 in BALF of sarcoidosis were well nagatively correlated with the decrease of the percentage of DLCO (r=-0.67, P<0.01 and r=-0.55, P<0.05, respectively), the decrease of mid-expiratory flow at 50% of vital capacity (FEF50%) was well correlated with the increase of the percentage of lymphocytes in BALF of sarcoidosis (r=-0.54, P<0.05). Conclusion:Pulmonary diffusing capacity(DLCO) was significently correlated with BALF lymphocyte phenotype,so was small airway function,and can act as the marker of activity of sarcoidosis.
9.Survey of cataract rate and surgical coverage in agricultural and pastoral area of Chifeng Keshenketeng in Inner Mongolia
Wei, CUI ; Zhi-ying, LIU ; Gui-bin, YU
Chinese Journal of Experimental Ophthalmology 2012;30(5):462-466
BackgroundCataract is a leading blinding eye disease,and the prevalence of cataract varies in different regions.ObjectiveThe present study was to investigate the incidence of cataract,surgical coverage rate of cataract and postoperative visual acuity,and to propose a strategy for blindness prevention in Chifeng Keshiketengqi.Methods This is a cross-sectional survey of research.A random cluster sampling method was performed in 12 populated areas in Keshiketengqi.Inhabitants over 50 years in the region were included in this survey.This study was approved by the Ethic Committee of Inner Mongolia People' s Hospital.Informed consents were obtained orally from all the subjects.Disease history,visual acuity,intraocular pressure and regular ophthamological examinations were performed.The inclusion criteria of a pilot study and detailed protocol were employed to calculate the incidence rate of cataract.The questionnaire survey was simultaneously adopted to analyze the cataract-related factors.The surgical coverage rate of cataract in this area was calculated.ResultsIn a total 4234 inhabitants,3826 subjects participated in the survey with a response rate of 90.36%.Cataract was found in 1200 participants with an incidence rate of 31.39%.Age,the female gender and illiteracy were identified as risk factors for cataract (x2 =101.005,P =0.000 ;x2 =58.853,P =0.000 ;x2 =12.037,P =0.007 ).The prevalence rates of cataract were 36.98% and 33.56% for illiterates and women,respectively.The incidence rate in the Mongol population was significantly higher than that of the Han population ( 34.83% vs.29.76% ) (x2 =9.734,P =0.001 ).The cataract surgery rate increased yearly since 1998.When the vision acuity of the fellow eye was <0.1,the surgery coverage rate was 20.60%,but the rates were lower in female,illiterates and the Mongol population (x2 =1.993,P =0.038 ;x2 =16.463,P =0.044 ;x2 =8.523,P =0.029).When a pinhole visual acuity of <0.05 was determined as the criteria of blindness,the surgical coverage rate was 28.36%.The cataract surgical coverage rates for Han and Mongolian were 30.67% and 24.53%,respectively,with a significant difference between them (x2 =12.951,P=0.000).The social burden rate was 3.34% in this area,with a majority of females,illiterates and the Mongol population ( P<0.05 ).ConclusionsIn agricultural and pastoral areas of Chifeng Keshiketengqi,the ≥50 years old population has a high rate of cataract blindness and low surgery coverage rate.Surgery is still the preferred way for cataract treatment.
10.Observation of the effect of perioperative nutritional support for patients with esophageal cancer
Wenjiang YU ; Wei JIA ; Li LIU ; Zhi YUE
Chinese Journal of Primary Medicine and Pharmacy 2014;21(11):1680-1682
Objective To investigate the clinical effect of preoperative nutritional treatment and perioperative nutrition support for the patients with esophageal cancer.Methods According to the digital table,90 patients with esophageal cancer were divided into the control group(15 cases),preoperative nutrition group(25 cases),postoperation nutrition group(25 cases)and preoperative nutrition + postoperation nutrition group(25 cases).The postoperative quality of life and the complications were compared.Results Postoperative quality of life in the preoperative nutrition group,postoperation nutrition group and preoperative nutrition + postoperation nutrition group were all better than that in the control group(t =14.76,15.13,17.87,all P < 0.05).The incidence rate of postoperative complications in patients received nutritional intervention significantly decreased than in the control group(x2 =9.17,12.13,19.18,all P < 0.05).Conclusion The preoperative nutrition and postoperation nutrition can improve the postoperative quality of life and reduce the incidence rate of the complications.