1.The update of the relationship between nonalcoholic fatty liver disease and atherosclerosis
Chinese Journal of Endocrinology and Metabolism 2011;27(9):784-786
Nonalcoholic fatty liver disease (NAFLD) is associated with obesity, type 2 diabetes,dyslipidemia, hypertension, and metabolic syndrome.It likely represents hepatic manifestation of metabolic syndrome. The prevalence of NAFLD has been estimated to be 20%-30% in the general population. However, it is much higher in type 2 diabetic patients. Several epidemiological studies indicate that NAFLD is linked to an increased risk of cardiovascular disease( CVD), which is independent of underlying cardiometabolic risk factors. This suggests that NAFLD may also be actively involved in the pathogenesis. The possible molecular mediators linking NAFLD and atherosclerosis(AS) include the release of pro-atherogenic factors by oxidative stress and inflammation as well as atherogenic dyslipidemia, abnormal adipose factors, and insulin resistance, finally aggravating progression of CVD. In this article, the relationship and possible mechanisms between NAFLD and AS are reviewed.
2.Endothelin-1 and cerebral vasospasm after subarachnoid hemorrhage
Xiaoming ZHOU ; Mengliang ZHOU ; Xin ZHANG
International Journal of Cerebrovascular Diseases 2012;20(8):637-640
Cerebral vasospasm (CVS) is a serious complication of aneurysmal subarachnoid hemorrhage (SAH).Endothelin-1 (ET-1) is an endothelium-derived vasoconstrictor substance.A large number of clinical and basic studies have shown that cerebrospinal fluid and/or ET-1 levels in peripheral blood increases in patients with SAH and play an important role in the occurrence and development of CVS.This article reviews the research status of the role of ET-1 in the occurrence and development of CVS.
3.The Effect of Community-based Integrative Intervention on Hypertension in Guangzhou
Yong CHEN ; Xin PU ; Xiaoming LIU
Chinese Journal of Prevention and Control of Chronic Diseases 2006;0(01):-
Objective To Analyze the effect of community-based integrative intervention on hypertension.Methods Among six residential areas,randomly chose four as the intervention group and the another two as the control group.Then a synthetical intervention was carried out to the intervention group,but no measures to the control.Results In the intervention group,the patients' systolic and diastolic pressure were eventually lower by 5.25 mm Hg than the datum line.The final result was obviously different from the datum line(P0.05).Conclusion The community-based integrated intervention plays a great role in the control of high blood pressure.
4.Clinical and Experimental Observation on Treatment of Psoriasis with Radix Astra gali Injectio
Xiaoming LIU ; Xin QI ; Zhiqi SONG
Chinese Journal of Dermatology 1994;0(02):-
Objective T o observe the therapeutic effect of Radix Astragali Injectio on psoriasis and it s possible pharmaceutical mechanism. Methods Two groups of patients with psoriasis vulgaris were treated with either comprehensive regi men or comprehensive regimen plus Radix Astragali Injectio. The clinical respons es in both groups were compared. Meanwhile, the effects of Radix Astragali Decoc tion and Injectio on proliferation of vaginal epithelium, PCNA expression, diffe rentiation of tail scale epidermis and plasma ET-1 were assessed in mouse mode l. Results It was shown that psoriatic lesions began to fade significantly earli er in Radix Astragali group than in routine comprehensive treatment group. The c linical cure rate was significantly higher in Radix Astragali group also. Animal experiment indicated that Radix Astragali Injectio had effects on all 4 indices mentioned above and the effects of the Injectio was stronger than that of the D ecoction. Conclusions Radix Astragali Injectio is effective for psoriasis vulgar is. Its therapeutic effects may be explained by blocking multiple pathogenetic l inkage.
5.Effect of Immunoregulatory Activity of Eucommia Ulmoides Oliv Polysaccharides on Immunodepressive Mice
Xiaoming XIN ; Hao WANG ; Lei FENG
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(10):-
Objective To study the immunoregulatory activity of eucommia ulmoides oliv polysaccharides (EOP) on immunodepressive mice. Method The immunodepressive mice model was established with cyclophosphamide (CY) treated. EOP was given with different doses, and mouse weight, thymus index, spleen index, abdominal cavity macrophage engulfing rates, engulfing index were measured. Result 300 grams Eucommia ulmoides Oliv crude drugs after withdraw separate gained 9.3 grams polysaccharides. After CY injection, the mouse weight, chest gland index, abdominal cavity macrophage swallowing rate, phagocytic count reduced. EOP could resist the mouse body weight drop induced by CY, elevate the thymus index of immunity low mouse, obviously increase mouse abdominal cavity macrophage engulfing rates and engulfing index (P
6.From Single Optical Tweezer to Optical Tweezer Array
Xin WANG ; Qin LI ; Xiaoming HU
Space Medicine & Medical Engineering 2006;0(06):-
The paper introduced the recent development of optical tweezers array.The particle manipulation system could be set up based on several methods,such as acousto-optics deflectors(AOD),diffractive optical elements(DOE),spatial light modulators(SLM),interference technique,vertical cavity surface emitting laser(VCSEL),optical fibers and micro-lens arrays as well.The principle,specification and basic structure of each method were introduced and analyzed briefly.Taking the advantage of particle trapping,optical tweezers array was very useful for manipulation of micron size particles,such as cells.Combining with microfluidics and MEMs fabrication,optical tweezer array,the ultraminiature and portable particle sorting system,would be a good choice for space biological research.
7.CLONING AND EXPRESSION OF A GENE MEDIATINGγ-RADIATION-INDUCED APOPTOSIS IN HL-60 CELLS
Xiaoming LI ; Tianbao SONG ; Xin TONG ; Zhixian SUN
Journal of Pharmaceutical Analysis 2000;12(1):1-4,14
Objective To identify the member of the caspase family proteases involved in γ-radiation-induced apoptosis in HL-60 cells and to study the expression of the caspase gene in normal, apoptotic cells and in immortal tu mor cells. Methods By using degenerate oligonucleotide primers encoding the highly conserved peptides that were pre sent in all known caspases, we performed RT-PCR on poly(A)RNA from γ-radiation-induced apoptotic HL-60 cells. Caspase-3 mRNA in apoptotic HL-60 cells and in human tumor cell lines was analyzed by Northern blot. Results The amplified DNA fragment was identified with caspase-3 cDNA by cloning and sequencing. The Northern blot analysis of caspase-3 mRNA of different human tumor cell lines showed that the caspase-3 gene transcript was more highly ex pressed in leukemia cell lines and the SH-SY5Y cell line than in HeLa and MCF-7 cells. It was more highly expressed in the radiation-induced apoptotic HL-60 cells than in control HL-60 cells. Conclusion These results indicated that caspase-3 was involved in γ-radiation-induced apoptosis in HL-60 cells. The high level of expression of caspase-3 may aid efforts to understand the insensitivity of some tumor cells to radiation, their inherent ability to survive, and apop tosis.
8.Serum anti-Jo-1 antibody level correlates with disease activity in polymyositis and dermatomyositis
Yao XIE ; Xiaoming SHU ; Xin LU ; Guochun WANG
Chinese Journal of Rheumatology 2011;15(11):742-745
ObjectiveTo evaluate the correlation between serum anti-Jo-1 antibody level and myositis disease activity in polymyositis/dermatomyositis.MethodsAnti-Jo-1 antibody levels in serum from 148 polymyositis/dermatomyositis patients and 130 healthy controls were measured by both ELISA and immunoblot assay.Disease activity of the anti-Jo-1 antibody positive patients was assessed by the global myositis disease activity score (visual analogue score,VAS) established by the International Myositis Assessment and Clinical Studies(IMACS) Group.The correlation between disease activity and level of serum antiJo-1 antibody was assessed.Comparisons between groups were performed by x2 test or t test.ResultsThe positive rate of ELISA and EUROLINE was 24.3%(36/148) and 27.0%(40/148) respectively.Fever,ILD,arthritis/arthralgia were found to be more predominant in anti-Jo-1 antibody positive patients than those who were anti-Jo-1 antibody negative patients.There was significant positive correlation between the global myositis disease activity score (VAS) and serum level of anti-Jo-1 antibody (r=0.874,P=9.000).Serum antiJo-1 antibody levels,together with global disease activity,were significantly decreased in the 7 patients after treatment.ConclusionAnti-Jo-1 antibody level measured by ELISA is associated with disease activity of PM/DM,and could be a marker of disease activity.
9.Analysis of serum soluble human leukocyte antigen-G levels in patients with polymyositis or dermatomyositis
Xiaolan TIAN ; Qinglin PENG ; Xiaoming SHU ; Xin LU ; Guochun WANG
Chinese Journal of Rheumatology 2013;(5):313-317
Objective To investigate the serum levels of soluble human leukocyte antigen (sHLA)-G in patients with polymyositis (PM) or dermatomyositis (DM),and to analyze its association with clinical features and possible role in the pathogenesis of PM/DM.Methods Serum sHLA-G levels of 26 patients with PM,70 patients with DM and 35 matched healthy controls were measured by ELISA.The relationship between the sHLA-G levels and clinical features or seroimmunological data in the patients with PM/DM was analyzed.Results Serum levels of sHLA-G in PM/DM patients were significantly higher compared to healthy controls [(44±70) U/ml vs (4±5) U/ml,P<0.01].There was statistically significant difference between DM patients and PM patients [(54±81) U/ml vs (27±41) U/ml,P=0.004].The incidence of dysphagia was significantly higher in sHLA-G elevated group than those in sHLA-G normal group (P=0.001).Additionally,Spearman rank correlation analysis showed that the serum sHLA-G levels were positively correlated with serum C3 (r=0.284,P=0.021),but negatively correlated with CD3+ T cells (r=-0.233,P=0.047) and CD4+ T cells (r=-0.287,P=0.015) in the peripheral blood in patients with PM/DM.Serum levels of sHLA-G in non-treated PM/DM patients were significantly higher compared to treated patients [(77±99) U/ml vs (34±52) U/ml,P=0.021].No relationship between serum sHLA-G levels and PM/DM disease activity,or different drug therapy was found.Conclusion Serum levels of sHLA-G are increased in PM/DM patients.The increased production of sHLA-G,paralleled with higher incidence of dysphagia and lower level of CD3+ T cells and CD4+ T cells,indicates that sHLA-G may play an important role in the pathogenesis of PM/DM.
10.Clinical application of computed tomography angiography (CTA) and color Doppler image formation technology in thumb and finger reconstruction
Xiaoming CAI ; Hong CHEN ; Xin WANG ; Guoqing SHAO ; Huajie XIA
Chinese Journal of Microsurgery 2015;38(3):258-261
Objective To explore the clinical significance of the precision evaluation of computed tomography angiography and color Doppler image formation technology to the condition of the vascular system in the donor site.Methods From January,2014 to December,2014,CTA and color Doppler were used to examine conditions of the first dorsal metatarsal artery's courser and the size of original caliber in 25 patients with thumb or finger defected.Also the distance between skin and the first dorsal metatarsal artery.The accurate positions and adjacent relations of vessels in donor site were precisely marked and then the vessel original caliber was measured.Results All the first dorsal metatarsal arteries of 25 cases can be appeared clearly in CTA and color Doppler.Blood vessels line and filling results were completely consistent in intraoperative findings.The difference of the vessel original average caliber was statistically significant (P < 0.05) (1.20 ± 0.25 mm,1.41 ± 0.15 mm and 1.3 ±0.2 mm in Doppler,CTA and operation,respectively) while the distance was not significant (P > 0.05)(9.20 ±3.06 mm,10.32 ± 2.76 mm and 0.2 ± 2.6 mm in Doppler,CTA and operation,respectively) All the 25 transplanted toes were survived.Conclusion CTA combined color Doppler image formation technology in thumb or finger reconstruction can objectively reflect the real situation of the vessels in donor sites,and the structural characteristics and classification of anatomy for individualized,and has important clinical value in preoperative foot blood supply assessment.