2.Differential expression of Rac2 and RhoGDI in the neutrophil and its role in coronary heart disease
Yanling LIU ; Yan XIONG ; Jianmin WU
Chinese Journal of Immunology 2000;0(08):-
Objective:Evaluate the role of reactive oxygen species production and the differential expression of Rac2 and RhoGDI of neutrophils in pathogenesis of coronary heart disease.Methods:Reactive oxygen species production was measured by chemiluminescence method,the mRNA expression of Rac2 and RhoGDI was detected by quantitative RT-PCR.Results:The reactive oxygen species production by neutrophil is significantly increased in the coronary heart disease group,and the increase is related to the inflammatory cytokines in plasma.There is a significant increase of Rac2mRNA expression in coronary heart disease group than that of the control,while the expression of RhoGDImRNA in two groups are not significantly different.The ratio of Rac2mRNA to RhoGDImRNA is correlated to the production of reactive oxygen species of neutrophils.Conclusion:Netrophils are involved in the pathogenesis of coronary heart disease through their reactive oxygen species production,and the abnormal expression of Rac2 and RhoGDI is an important cause leading to the increased reactive oxygen species production.
3.Advances in the study of mechanism of insulin in promoting wound healing.
Peilang YANG ; Xiong ZHANG ; Yan LIU
Chinese Journal of Burns 2014;30(4):356-359
Since its discovery in 1921, insulin has been considered to be the most important hormone in the regulation of glucose and fat metabolism. In recent years, studies have revealed that besides metabolism regulation, insulin can also act as a growth factor like hormone in regulating multiple processes and various cellular activities in the process of wound healing. This review summarizes the role of insulin in wound healing and its underlying mechanism.
Glucose
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metabolism
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Growth Hormone
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metabolism
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physiology
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Humans
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Insulin
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physiology
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Insulin-Like Growth Factor I
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physiology
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Insulin-Like Growth Factor II
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physiology
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Wound Healing
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physiology
4.The value of delta model of end stage liver disease in predicting the prognosis of patients with decompensated liver cirrhosis
Fei LIU ; Wu-Jun XIONG ; Yan-Bing LIU ;
Chinese Journal of Digestion 1998;0(06):-
Objective To evaluate the prognostic value of dynamic delta model of end stage liver disease(MELD)in patients with decompensated liver cirrhosis.Methods Ninty-seven patients with decompensated liver cirrhosis were enrolled in the study and followed for 1 year followed up.Child-Turcotte- Pugh(CTP)score and MELD score were calculated twice for each patient on the first day of admission and one month later.The difference between two MELD scores represented the delta MELD.The predictive value related with delta MELD,MELD and CTP scores was determined by the area under receiver operating characteristic(ROC)curve.Results Ten patients died within 3 months,whose delta MELD(3.23?2.77) were higher than those of survivors(0.15?0.39)(P
5.Curcumin combined with electroacupuncture promotes the expression of brain-derived neurotrophic factor and nerve growth factor after cerebral infarction
Jian XIONG ; Zhichao ZHANG ; Rui SUN ; Yan MA ; Qi LIU
Chinese Journal of Physical Medicine and Rehabilitation 2017;39(3):170-174
Objective To investigate the expression of brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) after cerebral infarction and treatment with curcumin combined with electroacupuncture.Methods Middle cerebral artery occlusion was successfully introduced to simulate cerebral infarction in 60 healthy,male Wistar rats.They were then randomly divided into a control group,an electroacupuncture group,a curcumin group and a curcumin combined with electroacupuncture group (the observation group),each of 15.After the modeling,the four groups were given the planned interventions for 2 weeks,with the control group receiving no intervention.All of the rats were sacrificed after neurobehavioral scoring and immunological staining of brain tissue from the infarction area was used to detect the expression of BDNF and NGF.Results The average Bederson score in the observation group was significantly lower than those of the other groups.Cells expressing BDNF and NGF were significantly more numerous in the observation group than in the other three groups.Conclusion Curcumin combined with electroacupuncture can significantly improve the expression of BDNF and NGF in the infarcted area,and this may play a neuroprotective role.
6.Clinical Manifestations and Imaging Diagnostic Value of Tuberous Sclerosis Accompanied by Multiple Organs Injury
Jianguo YIN ; Xiaohong LIU ; Jijun NING ; Yan YANG ; Xiong JIA
Journal of Practical Radiology 1996;0(04):-
Objective To discuss the clinical manifestations and imaging diagnostic value of tuberous sclerosis accompanied by multi-organ injuries.Methods 2 cases in our hospital and 27 cases of tuberous sclerosis from the published reports were collected.The clinical manifestations and imaging features as well as the extent and type of multi-organ lesion were analyzed.Results Among the 29 patients,17 were male and 12 were female.The averaged age was 16.8.The clinical manifestations included:with family history in 6 , epilepsies in 25 (15 with mental retardation),symmetric angiofibroma in the face in 22 (3 with similar changes in the else body surface),fibromas beneath toenail or fingernail in 4, hyperdactylia of thumb in 2 and abdominal masses in 7 (4 with hematuria), tuberous scleroses beneath ependymal layer in 27,17 patients with kidney diseases,9 involved liver,5 involved spleen.Conclusion Multiple organs can be involved by tuberous sclerosis.The calcification of ependymal lyer and harmatoma of kidney are the most valuable in imaging diagnosis of the disease.
7.The relationship among resilience, general self-efficacy and coping styles in patients with tibia and fibula fracture
Wenjing ZHANG ; Yan WANG ; Yabei LIU ; Lina XIONG
Chinese Journal of Practical Nursing 2016;32(14):1097-1099
Objective To explore the relationship among resilience, general self-efficacy and coping styles of inpatients with tibia and fibula fracture. Methods Totally 104 inpatients with tibia and fibula fracture who met the conditions were investigated with General Self-Efficacy Scale, Connor-Davidson Resilience Scale and Medical Coping Modes Questionnaire. Results The total score of resilience with tibia and fibula fracture inpatient was 52.36 ± 9.56, which had a positive relationship with general self-efficacy and self-improvement coping style. Educational level, general self-efficacy, facing coping and yielding coping styles were influencing factors of resilience in patients with tibia and fibula fracture. Conclusions The level of resilience in patients with tibia and fibula fracture needs to be improved. Health care workers should pay attention to improve patient′s general self-efficacy, focus on patient′s coping styles and strengthen psychological health education of lower degree patients.
8.Immune function examination and its clinical significance in children with Kawasaki's disease
Yan DING ; Wei YIN ; Yuehua XIONG ; Fang PENG ; Li LIU
Chinese Journal of Rheumatology 2012;16(9):588-592
ObjectiveThe purpose of the study was to summarize the characteristics of cellular and humoral immunity in children with Kawasaki's disease (KD),and to explore the role of cellular and humoral immunity in the pathogenesis of KD.MethodsOne hundred and ninety-six subjects with KD were diagnosed and observed.The serum IgG,IgM,IgA and C3,C4 levels were detected by velocity scatter turbidimetry.The levels of T lymphocyte subsets,natural killer cells (NK cells),and B cells were analyzed by flow cytometry.Chi-square test,independent t-test and Spearman analysis were adopted to analyze data.ResultsOne hundred and seventy-two cases were diagnosed as typical KD,24 cases were incomplete KD,17 cases were refractory KD,179 cases responded to IVIG therapy,and 34 cases were CAL.The occurrence of coronary artery lesion (CAL) in the refractory KD group was 52.9%,which was evidently higher than those patients responding to IVIG therapy(14.0%,P<0.05).In the group of KD,the level of CD19 absolute value(1165±556)/μl was higher than that in the control group(P<0.05),the ratio of CD4/CD8 (2.19±0.77) was higher than that in the control group (P<0.05),the levels of serum IgM ( 1.41 ±0.45) g/L,IgA (0.81 ±0.35) g/L,C3 ( 1.31 ±0.26) g/L were higher than those in the control group (P<0.05),the levels of CD8 (671±308)/μl,NK (337±233)/μl absolute value were lower than those in thc control group (P<0.05).In refractory KD subgroup,the levels of CD19 absolute value,serum IgM,C3 and the ratio of CD4/CD8 were higher than those in the subgroup responding to IVIG therapy(P<0.05),while the levels of CD8,NK absolute value were lower than those in the latter(P<0.05).In the CAL subgroup,the levels of CD19 absolute value,serum IgM,IgA and the ratio of CD4/CD8 were higher than those in the non-CAL subgroup (P<0.05),while the levels of CD8,NK absolute value were lower than those in the latter(P<0.05).The differences of all data between typical KD subgroup and incomplete KD subgroup were insignificant (P>0.05).The severity grade of CAL was positively correlated with the ratio of CD4/CD8(P<0.05).ConclusionThere are cellular immunity and humoral immunity disturbances in the acute stage of KD,while cellular immunity disturbances are more striking.Cellular immunity and humoral immunity are all involved in the pathogenesis of KD.The immunity dysfunction is more significant in refractory KD and CAL.The occurrence rate of CAL is high in refractory KD.The ratio of CD4/CD8 is relevant to the severity of vascular injury.
9.p38 mitogen-activated protein kinase plays a critical role in the control of energy metabolism and development of cardiovascular diseases
Wenhong CAO ; Yan XIONG ; Qufan COLLINS ; Huiyu LIU
Journal of Central South University(Medical Sciences) 2007;32(1):1-14
p38 mitogen-activated protein kinase (p38) is a member of MAP kinase family. Its widespectrum roles in the control of energy metabolism have been indicated in numerous studies. P3 8 participates in the energy metabolism in all major tissues/organs involved in the control of energy metabolism, including adipose tissue, skeletal muscles, islet cells, and liver. In white adipose tissue, p38 plays an important role in adipose differentiation and glucose uptake although it is still inconclusive whether this role of p38 is stimulatory or inhibitory. The stimulatory role of p38 in transcription of the uncoupling protein 1 ( UCP1 ) gene in brown adipose tissue is relatively clear. A fundamental role for p38 in the differentiation of skeletal muscles and mitochondrial biogenesis in skeletal muscles is rather definitive although the role of p3 8 in glucose uptake of skeletal muscles remains controversial. In islet cells, p38 appears to be involved in β-cell apoptosis. P38 has been indicated in the control of preproinsulin gene transcription, but remains controversial. However, it seems clear that p38 does not play a significant role in insulin secretion. In the liver, p38 plays a central role in hepatic glucose and lipid metabolism. Activation of p38 participates in the processes to increase blood glucose levels through reducing glycogen synthesis and increasing hepatic gluconeogenesis. P38 appears to prevent fat storage by inhibiting hepatic lipogenesis and promoting fatty acid oxidation in the liver. Additionally, p38 may play a critical role in cholesterol metabolism by regulating expression of the LDLR gene and bile metabolism. P38 does not only participate in various physiological and pathophysiological processes in cardiomyocytes, but also is heavily involved in the development of atherosclerotic lessions through its influences on monocytes/macrophages, vascular endothelial cells, and vascular smooth muscle cells.
10.Observation on the Therapeutic Effect of Electroacupuncture Combined with Small Dose of Clozapine in Clinical Treatment of Refractory Schizophrenia
Dianzhang XIONG ; Lingling LIU ; Yan YI ; Feng YE
Acupuncture Research 2010;0(02):-
Objective To observe the effect of electroacupuncture(EA) in combination with small dose of clozapine on clinical symptoms of refractory schizophrenia patients so as to evaluate its validity and security.Methods Eighty schizophrenia patients were randomized into medication group and EA+medication group(n=40/group).Patients of medication group were treated with conventional oral administration of clozapine(50-100 mg/d to 200-500 mg/d,for 8 weeks) and those of EA+ medication group treated by EA of Baihui(GV 20) and bilateral Taiyang(EX-HN 5) and oral administration of clozapine(50 mg/d to 100-150 mg/d).EA was given to the patients,3 times a week for 8 weeks.Scores of the Positive and Negative Symptom Scale(PANSS) and the Untoward Effect Symptom Scale(TESS) were used to assess the therapeutic effect.Results Following treatment,PANSS scores for positive symptoms and the common psychiatric symptoms of the medication and EA+medication groups all decreased evidently from the 2rd week on(P0.05).But TESS score of EA+medication group was evidently lower than that of medication group(P