1.Experimental studies of the effect of erythropoietin on fas-associated death domain protein and caslmse-8 protein in rat with intracerebral hemorrhage
Qiuyan SHI ; Jinke JIANG ; Qian LI ; Chao LIU ; Huifang SUN ; Junfang HE ; Guozhi ZHANG ; Ruibiao ZHANG
Clinical Medicine of China 2009;25(5):456-458
Objective To study the protein expressions of Fas-associated death domain protein (FADD) and caspase-8 in rats with intracerebral hemorrhage ,and the effects of erythropoietin tp reveal the mechanism of neu-m-protection by EPO. Methods 126 male SD rats were randomly divided into three groups: Sham-operated group, intracerebral hemorrhage group, and EPO group. Each group was divided into seven subgroups according to the differ-ent time points (3,6,12,24,48,72 h and 7 d). The model of intracerebral hemorrage was established in rats by in-tracerebral injection of autogenous blood. The protein expressions of FADD and caspas-8 in rats tissue around the hemorrhagic and the normal brain tissue were detected by immunohistochemistry. Results The protein expressions of FADD and caspase-8 were increased [(4.66±0.46 ) and ( 15.89±1.81)] at 3 h after intracerebral hemorrhage, and peaked at 48 h [ (35.88±4.24 ) and (45.04±3.99)], the expressions of FADD and caspas-8 in the region around hematoma in EPO group significantly decreased compared with model group[ (3.92±0.64) and (28.24±1.90), (13.32±2.01 ) and (35.08±2.82)] at 3 h and 48 h. Conclusion The protein expressions of FADD and easpase-8 are markedly increased after intracerebral hemorrhage. EPO can protect the neurons by signifi-cantly reducing the expressions of FADD and caspase-8.
2.Study on correlation between the level of serum uric acid and metabolic syndrome
Shanwei SUN ; Bo LIU ; Shaoyuan RONG ; Ruibiao ZHANG ; Chunxia SUN ; Suhua LI ; Lina LI ; Guowen ZHANG ; Xiangning DING ; Hejian SUN
Clinical Medicine of China 2009;25(4):375-377
Objective To explore the correlation between the level of serum uric acid and metabolic syndrome and associated factors including overweight,abnormality of blood glucose,blood lipid,and hypertension.Methods 654 cases of complete medical records,aging from 30-90with median age of 65 ,were completed were selected,Data base was established by using Excell software,meanwhile,single factor analysis and stepwise regression analysis were performed using SPSS 11.0 software package.Results The levels of serum uric acid of patients with overweight,high fasting blood glucose (FBG),hypertriglyceride (TG),high-density lipid cholesterol (HDL-C)and essential hypertension (EH)were higher than that of patients without overweight,normal fasting blood glucose,normal triglyceride,low high-density lipid cholesterol and without hypertension,respectively [respectively,(270.52 ±81.63 )μmol/L vs.(226.61 ± 67.42)μmol/L,t=-7.387,P=0.000;(265.71±73.50)μmol/Lvs.(235.03 ±75.00)μmol/L,t=-4.459,P=0.000;(262.80 ±74.45 )μmol/L vs.( 235.82±75.04)μmol/L,t=-3.927,P=0.000;(243.97 ±76.33)μmol/L vs.(212.78±57.60)μmol/L,t=-2.412,P=0.016;(282.87±64.79)μmol/L vs.( 180.22±41.60)μmol/L,t=22.59,P=0.000 ].The patients with metabolic syndrome (n=107)and the patients without metabolic syndrome (n=547)were included in our study.The level of serum uric acid of patients with metabolic syndrome was higher than that of patients without metabolic syndrome [(301.22±68.55 )μmol/L vs.(230.72±71.63)μmol/L,t=9.376,P=0.000].Stepwise regression analysis showed that there was positive correlation between systolic blood pressure (SBP),diastolic blood pressure (DBP),the body mass index (BMI),triglyceride (TG),high-density lipid cholesterol (HDL-C),fasting blood glucose (FBG)and the level of serum uric acid,respectively (t=3.409,13.401,6.979,2.943,3.514,4.706 respectively;P=0.000,0.001,0.000,0.003,0.000,0.000 respectively).Conclusion The level of serum uric acid in patients with metabolic syndrome is higher than those without metabolic syndrome.There is positive correlation between the level of serum uric acid and associated factors of metabolic syndrome including overweight,abnormality of blood glucose and blood lipid,and hypertension.
3.Expression and correlational research of mTOR and 4EBP1 in laryngeal carcinoma.
Xiao ZHANG ; Yunpeng BA ; Ruibiao SONG
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2012;26(23):1077-1082
OBJECTIVE:
This study aimed to explore the expression and their correlation of mammalian target of rapamycin (mTOR) and EIF4E binding protein1 (4EBP1) in laryngeal squamous cell carcinoma (LSCC).
METHOD:
MTOR and 4EBP1 expression was studied using immunohistochemical methods in LSCC tissues of 77 cases and adjacent tissues of 18 cases,and then the relationship of their expression and clinical pathological factors were analyzed.
RESULT:
The positive expression rates of mTOR and 4EBP1 were 54.5% and 48.1% in laryngeal carcinoma, which was significantly higher than those in para-carcinoma (P < 0.05). Expression of mTOR and 4EBP1 was associated with metastases to lymph nodes and histopathology classification (P < 0.05), but was not associated with clinic stages (P > 0.05). There was significant positive correlation between the expression level of mTOR and 4EBP1 in LSCC (P < 0.05).
CONCLUSION
(1) The high expression of mTOR and 4EBP1 is closely related with clinicopathology and lymph node metastases. It may play an important role in the development and progression of laryngeal carcinoma. (2) The positive correlation on expression level of mTOR and 4EBP1 in LSCC tissue shows that it has clinical significance on clinical therapy and prognosis.
Adaptor Proteins, Signal Transducing
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metabolism
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Adult
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Aged
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Carcinoma, Squamous Cell
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metabolism
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pathology
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Carrier Proteins
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metabolism
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Female
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Humans
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Laryngeal Neoplasms
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metabolism
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pathology
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Male
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Middle Aged
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Neoplasm Metastasis
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Phosphoproteins
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metabolism
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TOR Serine-Threonine Kinases
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metabolism