1.Identification role of plasma high sensitive C-reactive protein and lipoprotein (a) levels in the diagnosis of ischemic stroke according to the TOAST classification
International Journal of Cerebrovascular Diseases 2011;19(6):427-431
Objective To investigate the identification role of plasma high sensitive Creactive protein (hs-CRP) and lipoprotein (a) (Lp [a]) levels in the diagnosis of patients with acute ischemic stroke according to the TOAST classification. Methods The levels of plasma hsCRP and Lp (a) in 82 acute stroke patients ( <24 hours) and 60 healthy controls were detected using immune scatter turbidimetry and immune transmission turbidity, and try to make use of Holter, ultrasonography, magnetic resonance imaging, magnetic resonance angiography/CT angiography/dagital subtraction angiography and other tests. Finally, they were classified according to the diagnostic criteria of the TOAST classification of ischemic stroke. Results There were significant differences in plasma hs-CRP and Lp (a) levels between all the subtypes of the acute ischemic sroke group and the control group (all P <0. 001). The the level of plasma hsCRP in patients with cardioembolism (CE) was highest. Hs-CRP could be used as a biological marker of CE subtype (odds ratio[OR] = 1. 84,95% confidence interval [CI] 1. 18-2. 85, P < 0. 05). When its concentration was > 3. 48 mg/L, the sensitivity and specificity of predicting CE were 89% and 83% respectively. The plasma level of the AT patients was highest, it could be used as a biological marker of AT subtype (OR = 1. 02, 95% CI 1. 01-1. 03, P<0. 05); when its concentration was > 183. 5 mg/L, the sensitivity and specificity of predicting AT were 87% and 85% respectively. Conclusions The plasma hs-CRP and Lp (a) levels of patients with acute ischemic stroke may provide some help for timely and accurate etiological typing.
2.P-selectin and ischemic cerebrovascular disease
Yajie CHEN ; Yi YANG ; Mingshan REN
International Journal of Cerebrovascular Diseases 2009;17(12):948-951
P-selectin is also known as CD62. It promotes the occurrence of ischemic cerebrovascular disease by mediating the activation of endothelial cells and platelets as well as the processes of the formation and development of atherogenesis. A number of studies have confirmed that P-selectin plays important roles in the occurrence and development of the risk factors (such as hypertension, diabetes, hypercholesterolemia, heart disease, smoking, alcohol abuse and hyperfibrinogenemia) for ischemic cerebrovascular disease. It remains to be confirmed by further studies whether P-selectin can be used as an independent risk factor for predicting the occurrence of ischemic cerebrovascular disease.
3.Biological markers of ischemic stroke subtypes according to TOAST classification
Lei SHEN ; Ming-shan REN ; Yi YANG ;
International Journal of Cerebrovascular Diseases 2010;18(4):278-281
The identification of the specific cause in every patient has important clinical implications, because ischemic stroke is an etiologically heterogeneous disease. The Trial of Org 10172 in Acute Stroke Treatment (TOAST) classification can be used to define the etiology of stroke. However, TOAST classification can not be completed timely on admission of patients with acute stroke, which has impacted early guidance of clinical treatment. This article reviews the biological markers of early differential-diagnostic significance of the TOAST classification.
4.Clinical effect and safety of atropine gel combined with anisodamine eye drops on the treatment of iridocyclitis
Chinese Journal of Biochemical Pharmaceutics 2016;36(11):160-162,166
Objective To investigate the clinical effect and safety of atropine gel combined with anisodamine eye drops on the treatment of iridocyclitis.Methods A total of 174 cases with iridocyclitis in Zhejiang Hospital from May 2013 to July 2015 in this study were selected and divided into the control group and research group with 87 cases in each group.The patients in the control group were treated with tropicamide mydriatic,the patients in the research group were treated with atropine gel combined with anisodamine eye drops mydriatic.Serum levels of inflammatory factors, serum immunoglobulin and complement levels were observed and recorded before and after treatment,the clinical efficacy and incidence of adverse reactions were compared.Results The effective rate in the control group(85.06%) was lower than the research group(94.26%),the difference was statistically significant(P<0.05);compared with the control group,serum levels of TNF-α,IFN-γ,IL-23,CRP were lower in the research group after treatment, serum levels of IgG,IgE were lower,and serum levels of IgA,C3 were higher after treatment,the difference was statistically significant(P<0.05);there was no significant difference in the incidence of adverse reactions between the two groups.Conclusion The clinical effect of atropine gel combined with anisodamine eye drops in the treatment of iridocyclitis was exactly , can effectively reduce the inflammatory response,improve the immune status,and high security.
6.Study on the expression of LGT proteinic fingerprint in the change of TSH,FT3,FT4
Yi PEI ; Shuqing WEI ; Yongming YANG ; Xiaohui REN ; Jin HUANG
Cancer Research and Clinic 2009;21(3):183-184,187
Objective Exploration of TSH, FT3, FT4 changes in critical condition prior to death.Methods 84 patients that were anti-tumor therapy acceptable and not associated with the treatment of thyroid disease in patients with terminal tumors. Age from 24 to 85-year-old, male 56, female 28. The use of SELDI technology (surface-enhanced laser description / ionization time-of-flight mass spectrometry protein chip technology) checks to M/Z for the 11 100 + H~11 900 + H peak of the cluster, divided into the positive group for critically ill patients with early warning protein (LGT) and the negative group for it. All patients were given TSH, FT3, FT4 inspection. The results were statistically analyzed. Results TSH, FT3, FT4 in the LGT positive group was significantly lower than in the negative LGT group. There was no correlation between TSH,FT3 and FT4 in the LGT positive group;In the negative LGT group FT3 and FT4 had a positive correlation,and FT3 and TSH no relevance. Conclusion Thyroid function is normal in the stage of cancer patients stable condition. Possible pituitary-hypothyroidism may occur as the disease advances to the end or before death.This may be an important factor causing the acceleration to the death of the patients. However, the cause and effect between this phenomenon and the early warning of protein fingerprint group(LGT) is still not clear. In critical condition checking thyroid function and render supplementary amount of thyroid hormone in accordance with the checking results may be beneficial.
7.Role of prokaryotic pprI gene in protecting BALB/c mice from acute radiation injury
Yi SHI ; Ling WEN ; Lili REN ; Zhanshan YANG
Chinese Journal of Radiological Medicine and Protection 2015;35(7):485-490,495
Objective To investigate the radioresistant effects of pprI gene of Deinococcus radiodurans on BALB/c mice.Methods Male BALB/c mice in SPF level were applied for this work.The pEGFP-c1 plasmid and pEGFP-c1-pprI gene recombinant plasmid were transferred into anterolateral muscle of mice with in vivo electroporation technology.The mice were irradiated by 6 Gy 60Co γ-rays in whole body and the mortality of mice was observed within 30 days after irradiation.In addition,the mouse were irradiated with 4 Gy γ-rays and then the peripheral blood cell number,apoptosis rates of thymocyte cells,spleen cells and bone marrow cells were observed in the days of 1,7,14,28 and 35 after irradiation while the histopathological changes of lung and testis were observed in the days 7 and 28 after γ-ray irradiation.Results The highest gene transfection efficiency of muscle cells was obtained in a Plasmid injection amount of 50 μg/50 μl and electric field strength of 200 V/cm.The acute radiation mortality of pEGFP-c1-pprI gene recombinant plasmid transfer group was 30%,lower than that of irradiation group (60.0%) and pEGFP-c1 plasmid transfer group (63.3%) after 6 Gy γ-ray irradiation (x2 =4.90,6.24,P < 0.05).Compared with the irradiation group and pEGFP-c1 plasmid transfer group,the WBC count of pEGFP-c1-pprI gene recombinant plasmid group in peripheral blood of mice was significantly higher in the days of 1,7,14 and 28 (F =16.26,8.10,6.37,10.74,P <0.05),PLT count was significantly higher in days of 7 and 14 (F =7.36,5.71,P < 0.05),meanwhile the lymphocyte percentage was increased significantly on the 7th day (F =18.43,P < 0.05) after irradiation.On the other hand,the apoptosis rates of thymocyte cells and bone marrow cells were significantly decreased in the days of 1,7,14,28 and 35 (F =3.88,14.91,14.14,39.86,5.65,P <0.05 and F=53.70,11.75,21.78,41.40,4.54,P <0.05) while the apoptosis rate of spleen cells was significantly decreased in the days of 1,7,14 and 28 (F =97.95,56.61,33.55,14.71,P <0.05) after irradiation.Finally,the radiation histopathological changes of lung and testis of the pEGFP-c1-pprI gene recombinant plasmid group were slight and easy to recover.Conclusions Transfection of pprI gene of Deinococcus radiodurans by in vivo electroporation has significant protective effect on the acute radiation injury in BALB/c mice,which may have important clinical applications.
8.Construction of eukaryotic expression vector carrying pprI gene of Deinococcus radiodurans and its radioresistant effect
Ling WEN ; Yi SHI ; Lili REN ; Ying CONG ; Zhanshan YANG
Chinese Journal of Radiological Medicine and Protection 2014;34(8):563-568
Objective To construct the eukaryotic expression vector of pprI gene from Deinococcus radiodurans R1 and investigate its radioresistant effects in eukaryotic cells.Methods A recombinant vector pEGFP-c1-pprI was constructed by DNA recombinant technique.The empty vector pEGFP-c1 and the pEGFP-c1-pprI were transferred into human lung epithelial cells Beas-2B by LipofectamineTM 2000,respectively.Then the infected cells were screened in order to develop a cell line with stable expression of pprI gene.Cell survival rate was tested by clone-forming assay.Cell cycle distribution and apoptosis were detected by a flow cytometry.The fluorescence intensity of reactive oxygen species (ROS) was observed by a fluorescent microscope.γ-H2AX foci in the irradiated cell was detected by immunofluorescence.Results The eukaryotic expression plasmid of pprI prokaryotic gene was constructed and PprI fusion protein was expressed in human lung epithelial cells successfully,and the cell line (2BG) with a stable pprI gene expression was established.After irradiation,the cell survival fraction of 2BG cells was significantly higher than Beas-2B cells so that the value of D0 、Dq and N of the survival curve were increased.Moreover,the fluorescence intensity of ROS and the number of γ-H2AX foci in 2BG cells were also lower than those of B eas-2B cells(F =16.73,19.47,6.94,P < 0.05).Between these two cell lines,the apoptosis rate and cell cycle G2 arrest also had significant difference (F =139.73,237.92,P < 0.05).Conclusions The pprI gene from Deinococcus radiodurans RI can be stably expressed in the eukaryotic cells and it allows the transferred cells to have a radioresistant function.
9.Effects of Alcohol Extract of Toddalia asiatica on the Inflammation-associated Cytokines of Model Rats with Adjuvant Arthritis
Xiankun WANG ; Pu LI ; Yi REN ; Zicong LIANG ; Zaibo YANG
China Pharmacy 2016;27(25):3524-3527
OBJECTIVE:To study the effect of alcohol extract of Toddalia asiatica on the inflammation-associated cytokines of model rats with adjuvant arthritis(AA). METHODS:70 SD rats were randomly divided into a normal control group,a model con-trol group,a positive control chemical medicine group(Leflunomide tablets,0.012 g/kg),a positive control TCM group(Tripter-ygium glycosides tablets,0.012 g/kg)and the groups of low,medium and high-dose [1,4,6 g(crude drug)/kg] alcohol extract of T. asiatica,with 10 rats in each group. The rats in all groups except for the normal control group were given complete Freund’s complete adjuvant id for the establishment of AA models. At the same time,the rats in the drug administration groups were given corresponding drugs ig,while those in the normal control group and the model control group were given isometric normal saline ig,twice a day,for 28 consecutive days. The degree of toe swelling,arthritis index and the levels of interleukin(IL)-1β,IL-6, IL-10,tumor necrosis factor α(TNF-α)and prostaglandin E2(PGE2)in serum and synovial membranes of all groups of rats were determined. RESULTS:Compared to the normal control group,the model control group demonstrated higher degree of primary and secondary toe swelling,arthritis index and levels of IL-1β,IL-6,TNF-αand PGE2 in serum and joint synovial membrane,and low-er level of IL-10 therein(P<0.01). Compared to the model control group,all the above-mentioned indexes of the rats in drug ad-ministration groups significantly improved(P<0.05 or P<0.01). CONCLUSIONS:The alcohol extract of T. asiatica. has a preven-tive and therapeutic effect on the model rats with AA by regulating the expression of anti-inflammatory and proinflammatory cyto-kines in serum and synovial membrane.
10.Efficient expression and purification of Deinococcus radiodurans PprI protein in Pichia pastoris
Lili REN ; Wei WU ; Yi SHI ; Ling YUE ; Zhanshan YANG
Chinese Journal of Radiological Medicine and Protection 2016;36(6):406-411
Objective To establish a technical route for the efficient expression and purification of PprI protein from Deinococcus radiodurans R1 by using eukaryotic Pichia pastoris.Methods The encoding sequence of the Deinococcus radiodurans pprI gene was modified according to the preference of Pichia pastoris' codon.Modified pprI gene was fully synthesized with PCR and a 6 × His tag was added at its Nterminal.The PCR products were purified and then cloned into Pichia pastoris expression vector pHBM-905A.After utilizing Cop I and Not I double enzyme digestion and retrievering linear objective fragment,new pprI gene was transformed to the GS115 strain of Pichia pastoris.The obtained Pichia pastoris transformants were induced to express.Culture supernatants were detected by SDS-PAGE,Western blot,and mass spectrometry.A Ni-NTA column was uesd to purify the target protein and the BCA method was used to determine protein concentration.Results The coding sequence of new synthetic Deinococcus radiodurans pprI gene was correct.The purpose protein band of a molecular weight of 43 000 was detected in the culture supernatant of transformed Pichia pastoris strains by SDS-PAGE and Western blot.The mass spectrometry confirmed that it was the Deinococcus radiodurans PprI protein.When the concentration of imidazole was 250 mmol/L,the elution rate of PprI protein was the highest.The purified protein concentration was 0.35 mg/ml measured by BCA method.Conclusions This study has successfully constructed a new pprI gene and the recombinant strain of Pichia pastoris secreting PprI protein,and established a technical route for the efficient expression and purification of PprI protein.