1.Hemodynamic changes following cerebrovascular stenting
Chinese Journal of Tissue Engineering Research 2007;0(22):-
Intravascular stent as a foreign body induces platelet-monocyte aggregation following implantation, mediates various actions of monocyte, induces monocyte to express tissue factors, promotes fibrin sedimentation at injury site, and accelerates inflammatory reaction of vessel wall injury. In addition, it stimulates platelet aggregation on the stent, activates platelet system and coagulation system, resulting thrombosis. Smooth muscle cells migration to injury site, neointima hyperplasia, and vessel wall reconstruction cause in-stent restenosis. The influential factors that induce restenosis include type of stent, original diseases of the host, stenosis severity before stenting and residual stenosis length after stenting. Inhibition of tunica intima hyperplasia or improvement of neointima as well as vessel wall reconstruction could effectively prevent restenosis.
2.Studies on TRUS guided biopsy of hypoechoic nodules in outer gland of prostate
Medical Journal of Chinese People's Liberation Army 1983;0(05):-
Objective To study the characteristic of the hyperplasia hypoechoic nodules in outer gland of prostate with transrectal ultrasound (TRUS) guided biopsies. Methods 42 patients were suspected of prostatic cancer (PCa) for the existence of hypoechoic nodules in their outer glands of prostate. Each nodule was TRUS guided biopsied in sagittal and longitudinal section, respectively. The histological examinations were performed in double blind. Results Among the 42 patients, there were 22 cases of benign prostate hyperplasia (52.4%) and 20 cases of prostate cancer (47.6%). Conclusions The sonographic findings of the hypoechoic nodules in outer glands included not only PCa, but also benign hyperplasia nodules. Therefore, the definitive diagnosis must dependent on pathologic examinations.
3.Clinical analysis of cognitive function and depressive states in patients with age-related macular degeneration
Na, LI ; Yun-Xia, XU ; Xin, YAN
International Eye Science 2017;17(10):1905-1907
AIM: To investigate the difference of cognitive impairment and depression between age-related macular degeneration ( AMD ) group and the control group patients. ·METHODS: A prospective case-control study was performed from November 2014 to August 2016 in the hospital for AMD patients and sex-matched control group. The Mini-Mental State Examination ( MMSE) and the Geriatric Depression Scale ( GDS ) score of each patient were collected for statistical analyzing. ·RESULTS: There were total 84 cases ( 168 eyes ) included in the study. The difference of visual acuity between the two group was statistically significant ( F=8. 953, P=0. 004) by baseline data analyzing. There were no significant differences in MMSE scores between the two groups according to educational status ( P>0. 05 ) , while the prevalence of cognitive impairment in each group was statistically significant (x2 =4. 14, P=0. 042). The difference of GDS scores, prevalence of total and mild depression between two groups were both statistically significant (F=5. 852, P=0. 018; x2=6. 372, P=0. 012; x2 = 5. 674, P = 0. 017 ). However, there was no statistically significant difference in the prevalence of moderate to severe depression (x2=0. 672, P=0. 412). ·CONCLUSION: AMD patients have a higher prevalence of depression. Although MMSE score differences were not statistically significant in subgroup analysis by educational levels, AMD patients are more likely to have cognitive impairment overall.
5.Clinical value of repeat transcrectal ultrasound guided biopsy in prostatic cancer
Chinese Journal of Ultrasonography 1993;0(03):-
Objective To evaluate the clinical value of repeat transrectal ultrasound (TRUS) guided biopsy in prostatic cancer (PCA). Methods Repeat TRUS guided biopsy was conducted on 54 patients of the previous benign TRUS guided biopsy at high risk of PCA. Postatic specific antigen ranged in 0.5- 90.0 ?g/L(mean 16.3 ?g/L). Twenty-nine patients were abnormal in digital rectal examination, 21 patients were abnormal in TRUS. Results Forty-seven patients had 2 consecutive times of the biopsy, 6 patients had 3 consecutive times, 1 patient had 4 consecutive times in 54 patients of repeat TRUS guided biopsy. The pathological finding was confirmed in 14 PCA ( 25.9%), and 31 benign prostatic hyperplasia, 5 prostatic intra-epithelial neoplasmia, 4 chronic prostatitis. Conclusions The detection of PCA will be increased by repeat TRUS guided biopsy at high risk of PCA after the previous benign TRUS guided biopsy.
6.Hyperplasia of prostatic outer gland studied with transcrectal ultrasound guided biopsies
Chinese Journal of Ultrasonography 1993;0(02):-
ObjectiveThe possibility of the hyperplasi a of prostatic outer gland was studied with transrectal ultrasound (TRUS) guided biopsies. MethodsTwenty-seven prostatic outer glands in patients suspicious for prostatic cancer (PCA) were biopsied by TRUS guided, the total sites were 47. The same site was biopsied in sagittal and longitudinal section respectively. The hypoechoic lesion was biopsied 2 times if it was discovered in the outer gland. The histological results were diagnosed in double blind. Results Twenty prostatic inner glands looked symmetrical hyperplasia; 9 outer glands became thin because of the compression, there was no compressive sign in 18 patients; there was a hypoechoic lesion in outer gland of 3 patients. Benign prostatic hyperplasia was diagnosed in the specimens of 47 sites. ConclusionsThe hyperplasia of prostatic outer gland can occur like inner gland because it is glandular tissue.
7.Construction and screening of human AQP1 shRNA expression vectors
Zhuo LI ; Wei KANG ; Na XIN ; Yu TIAN ; Jianhua LI
Chongqing Medicine 2015;(30):4183-4186
Objective To construct and screen effective shRNA expression vectors targeting human AQP1 gene ,and evaluate the interference efficiency of the AQP1 shRNA recombinant plasmids ,thus provide basis for further exploration on the effect and mechanism of AQP1 gene on human breast cancer cells .Methods Four pairs of shRNA sequences targeting human AQP1 gene were designed and synthesized ,and then inserted into the GV115 vector .AQP1 shRNA and control shRNA plasmids were trans‐fected into human breast cancer MCF‐7 cells .The expression of AQP1 mRNA and protein were detected by real time PCR(RT‐PCR) and Western blot to evaluate the interfering efficiency .Results RT‐PCR demonstrated that AQP1 was expressed in human breast cancer MCF‐7 cells .Sequencing showed that the shRNA vectors targeting AQP1 were successfully constructed .48 h after the AQP1 shRNA transfection ,AQP1 mRNA and protein expression levels in MCF‐7 cells were reduced to a significant degree ,and the AQP1 shRNA 4 plasmid vector could inhibit the AQP1 most efficiently .Conclusion The AQP1 shRNA recombinant plasmids vectors were successfully constructed and can significantly inhibit the expression of AQP1 in MCF‐7 human breast cancer cells .
9.Expression of granulocyte macrophage-colony stimulating factor in patients with psoriasis
Xin XIE ; Li CHAI ; Yicheng ZHOU ; Na AN ; Jing TIAN
Chinese Journal of Dermatology 2011;44(10):731-732
Objective To investigate the expression of granulocyte macrophage-colony stimulating factor(GM-CSF)in skin lesions and sera of patients with pustular psoriasis and psoriasis vulgaris.Methods Tissue specimens were obtained from the lesions of 15 patients with pustular psoriasis,15 patients with psoriasis vulgaris and 15 normal human controls.Immunohistochemistry and dual antibody sandwich enzyme-linked immunosorbent assay(ELISA)were carried out to detect the levels of GM-CSF in the tissue and serum specimens from the patients and normal human controls,respectively.Results Significantly higher levels of GM-CSF were observed in the tissue and serum specimens from patients with pustular psoriasis and psoriasis vulgaris compared with the normal controls(all P < 0.01),as well as in those from the patients with pustular psoriasis compared with the patients with psoriasis vulgaris(both P < 0.01).Conclusion GM-CSF may be involved in the pathogenesis of psoriasis.
10.Epidemiological survey of nosocomial infection of imipenem-resistant Klebsiella pneumoniae in Beijing Shijitan Hospital
Duo YANG ; Na LI ; Xuli XIN ; Zhiying HU
Chongqing Medicine 2017;46(7):941-942,945
Objective To study the homology relationship among clinically isolated imipenem-resistant klebsiella pneumoniae strains and possible transmission route of drug resistant strains to provide a basis for blocking the transmission of this kind of bacteria in clinc.Methods Clinical samples collection and bacterial culture were routinely conducted,meanwhile the hand surface of ICU medical staffs and the surfaces of patien's bedside objects were performed the sample collection for conducting the bacterial count and culture.The bacterial identification and drug susceptibility test were performed by the VITEK-2 COMPACT system.The bacterial homology detection adopted the ERIC-rep-PCR method.Results Totally 642 strains of imipenem-resistant Klebsiella pneumoniae were clinically isolated from January 2011 to December 2013.Among them,389 strains(60.59%) were derived from ICU.72 strains (11.21%) fsrom the respiratory department,53 strains (8.26%) from the neurology department,41 strains (6.39 %) from the cardiovascular department,31 strains (4.83%) from the surgical department,11 strains (1.71%) from the gastroenterology department,5 strains (0.78 %) from the renal department,17 strains (2.65 %) from the emergency department and 23 strains(3.58%) from the other departments.One strain of imipenem-resistant Klebsiella pneumoniae was isolated from the IGU object surface.Among 642 clinical bacterial strains,there were 8 main clones,these 8 clone strains added up to 394 strains,which accounted for 61.37% of whole bacterial strains,the other 248 strains were single clones.Conclusion The monoclonal prevalence of imipenem-resistant klebsiella pneumonia in this hospital actually exists.The contact transmission may be the possible transmission route of this kind of infection.