1.Differentiation of Renal Clear Cell Carcinoma:Evaluation with CT Spectral Imaging
Chinese Journal of Medical Imaging 2014;(9):681-685
Purpose CT spectroscopy imaging was used in the preoperative differentiation evaluation of renal clear cell carcinoma, to access its malignant degree preoperatively, and to guide the operation treatment. Materials and Methods The spectral characteristics of 40 patients with renal clear cell carcinoma (RCCC) were analyzed retrospectively, all the RCCC patients underwent gemstone spectral imaging (GSI) scans, to obtain spectral serial images for the arterial phase and medulla phase. Spectral characteristic parameters and spectrum curve between different grades of renal cell carcinoma was compared, and the results were compared with pathology. Results Among the 40 cases of patients, carcinoma of grade I, II and III were 13 cases, 15 cases and 12 cases respectively. CT value ratio of renal clear cell carcinoma of grade I, II and III under 70 keV were 1.17±0.25, 0.84±0.85 and 0.64±0.19 (F=23.697, P<0.05) in arterial phase and 0.83±0.12, 0.64±0.07 and 0.54±0.08 (F=30.975, P<0.05) in medulla phase;iodine concentration ratio was 1.19±0.40, 0.60±0.10 and 0.25±0.94 (F=32.932, P<0.05) in arterial phase, and 0.69±0.18, 0.43±0.94 and 0.26±0.51 (F=28.673, P<0.05) in medulla phase. Spectrum curve slope of renal clear cell carcinoma of grade I, II, III in arterial phase was 4.00±1.24, 2.16±0.95 and 0.92±0.64 (F=23.392, P<0.05), and 3.54±1.20, 2.70±0.71 and 1.20±0.44 (F=24.272, P<0.05) in medulla phase. Differences of water concentration in arterial and medulla phase between renal clear cell carcinoma with different grade were not statistically signiifcant (P>0.05). Conclusion The differences of CT value, energy spectrum curve slope, iodine value under CT spectroscopy single energy imaging between renal clear cell carcinoma with different nuclear grade were statistically signiifcant, which can be expected to provide the basis for preoperative therapy selection.
2.Moral Lacking & Ethical Rebuilding of Medical Advertisement
Chinese Medical Ethics 1996;0(01):-
In the article, it thinks that moral lacking of advertisement is the basic reason which leads to intensified illegal medical advertisement. The main reasons for moral lacking of advertisement: imperfect legal system of medical advertisement, indifferent ethical consciousness of medical advertisement, insufficient social supervision of medical advertisement. Therefore, we should perfect the legislation, establish the correct advertising moral concept, improve the quality of advertising employees, and realize the function of social supervision fully.
3. Study on immunological activity of single strand RNA of hepatitis C virus
Academic Journal of Second Military Medical University 2010;31(9):929-932
Objective: To screen for the effective immunostimulatory sequences from hepatitis C virus (HCV) single strand RNA (ssRNA), and to identify the proteins that can bind to the sequences specifically. Methods: Four oligonucleotide sequences (HCV-. ORNs) derived from HCV ssRNA were synthesized, and the cytokines induced by them were detected using enzyme linked immunosorbent assay (ELISA), so as to identify the effective immunostimulatory sequences. Then proteins binding to the sequence(s) specifically were identified using improved electrophoresis mobility shift assay (EMSA) combined with electrospray ionization mass spectrum (ESI-MS). Results: One of the HCV-ORNs, ORN HCVtail, induced higher levels of TNF-α and IFN-α (P<0.01). Totally 83 groups of proteins were identified that can bind to ORNHCVtail; the proteins included TLR3 (Toll-like receptor 3), NLRC3 (NLR family, CARD domain-containing 3), and NLRC4 (NLR family, CARD domain-containing 4). Conclusion: We have successfully screened out effective immunostimulatory sequence of HCV ssRNA and the proteins that can bind to the sequence specifically. Our findings in the present study lay a foundation for mechanism research of immunity stimulated by HCV infection.
4.Effects of Preventive-electroacupuncture and Preventive-moxibustion at Guanyuan (RN4) on Hypothalamus-Pituitary-Ovary Axis in Ovariectomized Rats
Chinese Journal of Information on Traditional Chinese Medicine 2013;(8):45-47
Objective To observe the regulatory effects of the preventive acupuncture and moxibustion at Guanyuan (RN4) points in ovariectomized rats, and discuss the mechanism of preventive acupuncture and moxibustion on hyoathalamus-pituitary-ovary (HPO) axis. Methods Totally 48 female SD rats were divided into 5 groups, including normal group, sham operation group, ovariectomized rats group, preventive acupuncture group and preventive moxibustion group. Except normal group and sham operation group, rats were ovariectomized after preventive acupuncture and preventive moxibustion for 30 d in corresponding groups. ELISA was used to determine the levels of E2, ER, GnRH, FSH and LH in the tissues including hypophysis, hypothalamus and uterus. Results Compared with the normal group, E2, ER and GnRH level in the tissue of the model group was significantly lower (P<0.01), the levels of FSH and LH increased obviously (P<0.01). Compared with the model group, E2, ER and GnRH level of preventive acupuncture group and preventive moxibustion group increased in different degree (P<0.05). FSH and LH level reduced in different degree (P <0.05). There was no obvious difference between preventive acupuncture and preventive moxibustion group (P>0.05). Conclusions The preventive acupuncture and preventive moxibustion at Guanyuan (RN4) has benign modulation to disordered HPO axis of ovariectomized rats. The ability of preventive acupuncture and preventive moxibustion are almost the same.
5.Retrospective analysis on 224 cases of pancytopenia in Sichuan area
Yinzhong YANG ; Wenxia CHENG ; Na XIE
International Journal of Laboratory Medicine 2014;(5):515-516
Objective To understand the etiopathogenesis of pancytopenia (PCP) in Sichuan area and to analyze the statistical difference in the aspects of sex ,season and age .Methods 224 cases of PCP were performed the etiological statistics on sex ,season and age by SPSS11 .0 .Results Among 224 cases of PCP ,46 cases(21% ) were megaloblastic anemia ,followed by 36 cases(16% ) of myelodysplastic syndromes (MDS) and 27 cases(12% ) of aplastic anemia(AA) .224 cases of PCP included 110 males(49 .10% ) and 114 females(50 .90% ) ,there was no statistical difference between sexes (P>0 .05) .In the seasons groups ,most of the patients went to see doctor and were diagnosed in the fourth quarter (32% ) and the first quarter was least (13% ) ,the difference between them had statistical significance(P<0 .05);In the age groups ,the age group of 45- <65 years old was the highest(36 .71% ) and the age group of less than 18 years was lowest(3 .57% ) ,the difference between them had statistical significance(P<0 .05) .Conclu-sion Megaloblastic anemia is the main etiology causing PCP in Sichuan area ,and the next is MDS and AA .The sex has no statisti-cal significance to the patients with PCP ,while the incidence rate in the aspects of season and age has statistical significance .
6.Value of multi-parametric MRI in the diagnosis of prostatic abscess
Journal of Practical Radiology 2014;(12):2016-2019
Objective To elucidate the MRI appearance of prostatic abscess,the DWI and enhanced MRI features.Methods 12 cases of prostatic abscesses were retrospectively analyzed,the clinical symptom mainly manifested as lower urinary tract symptoms and fever.All of the patients were given routine MR examination including DWI sequence,6 patients received further enhanced MR examination.Results In the 12 cases,there were 4 cases behaved as single type,8 cases as multifocal type.The abscess showed iso-or slightly hypo-signal intensity on T1 WI,hyper-signal intensity on T2 WI,markedly high signal intensity on DWI and correspond-ing markedly low signal intensity on ADC.Complete abscess walls showed iso-or slightly hyper signal on T1 WI,hypo-signal inten-sity on T2 WI.The mature abscess walls were thin and smooth,which showed homogeneously ring enhanced in 4 cases.The imma-ture abscess walls showed uneven thickness and moderately enhanced in 2 cases.Septum in the abscess could be found in 4 cases, which showed similar enhancement to the abscess walls,while the abscess cavity showed non-enhanced.Abscesses involved the sur-rounding structures in 2 cases,the involved area showed obvious hyper-signal on T2 WI fat-suppression sequence.Conclusion DWI is the best sequence in the diagnosis of prostatic abscess,the markedly high signal intensity on DWI is the characteristic sign.The enhanced MRI showed the walls and septa clearly,the extent and involvement of adjacent structures.The multi-parametric MRI is a prominent procedure in the diagnosis of prostatic abcess.
7.Changes of bone marrow microenvironment of myelodysplastic syndromes
Na SHEN ; Qing LI ; Fanjun CHENG
Journal of International Oncology 2016;43(9):715-717
Bone marrow microenvironment is a complex network consisting of hematopoietic stem/pro-genitor cells (HSPCs),non-hematopoietic cells,extracellular matrix and various cytokines.Its components interact to support normal hematopoiesis.Emerging evidence indicates that the dysfunction of mesenchymal stem cells,myeloid-derived suppressor cells,cytokines and the epigenetic alterations of HSPCs in the bone marrow microenvironment could influence normal hematopoiesis.Abnormal hematopoiesis contributes to the occurrence of hematological malignancies,such as myelodysplastic syndromes (MDS).Animal models have confirmed that bone marrow microenvironment plays an important role in the original generation and maintenance of malignant diseases of hematopoietic system.
8.Competing endogenous RNA and tumor pathological mechanism
Shu ZHOU ; Na SHEN ; Fanjun CHENG
Journal of International Oncology 2017;44(2):115-117
Competing endogenous RNA (ceRNA) is a class of RNA which includes mRNA,pseudogenes,long non-coding RNA (lncRNA),circular RNA (circRNA).ceRNA weakens its inhibitory effect on mRNA translation through competitive binding with shared microRNA (miRNA).Many studies have confirmed that the disorder of ceRNA is closely related to the occur-ence of breast cancer,gastric cancer,lymphoma and other tumors.With the improvement of researches,ceRNA may be used as a tumor marker of clinical diagnosis and therapeutic target.
9.Research on the Preparation of Statistical Information Data Element of Traditional Chinese Medicine
Yijia CHENG ; Na ZHAO ; Yong XIAO
Journal of Medical Informatics 2017;38(3):69-72
The paper follows the preparation rules of health information data element standards,studies the catalog of statistical data element of Traditional Chinese Medicine (TCM) and the preparation contents,ideas and methods of value field code,prepares and forms Comprehensive Statistical Data Element Dictionary of Traditional Chinese Medicine and Classification and Coding for Value Domain of Comprehensive Statistical Data Element of Traditional Chinese Medicine,so as to provide reference standard and basis for the standardization and informatization in the statistical field of TCM.