2.Application of proteomics in the studies of cerebral ischemic preconditioning
International Journal of Cerebrovascular Diseases 2009;17(1):63-66
Proteome is defined as all proteins expressed in a cell, a tissue or an organism. Proteomics, a science of understanding the life activity law at the whole protein level, takes proteome as a research object; it is also a scientific method for quantitative detection of one or more protein populations or proteomes in a cell or tissue. Cerebral ischemic preconditioning has been one of the research hotspots in the field of neuroscience for decades. Its neuroprotec-five mechanism is associated with the changes of protein expression levels after cerebral ischemia, Therefore, proteomics has become more and more important in its mechanism study. This article mainly presents the major techniques of proteomics and their application in the studies of cerebral ischemic preconditioning.
3.α7nAChR is involved in anti-inflammation of physiological concentrations of glucocorticoids
Chinese Journal of Pathophysiology 2014;33(4):706-710
AIM:To explore the role of α7 nicotinic acetylcholine receptor (α7nAChR) in anti-inflammation of glucocorticoids (GCs) at physiological concentrations .METHODS: MTT assay was used to measure the viability of BV-2 cells, which were processed by hydrocortisone at different concentrations .On the basis of inflammatory model induced by LPS in BV-2 cells, experimental groups were divided as follows:(1) control;(2) LPS;(3) GCs+LPS;(4) methyl-lycaconitine ( MLA)+GCs+LPS.The levels of TNF-αand IL-1βin the cell supernatants were detected by ELISA .RE-SULTS:Hydrocortisone at concentrations of 2 000 and 1 000 nmol/L decreased the cell viability to (76.9 ±5.5)% and (90.8 ±7.3)%, respectively, indicating the cellular injury by GCs at over-physiological doses.LPS significantly induced the releases of TNF-αand IL-1βin a time-and dose-dependent manner in BV-2 cells.Hydrocortisone at physiological con-centrations (500 and 250 nmol/L) reduced the releases of TNF-αand IL-1βin BV-2 cells stimulated by LPS, and MLA at concentration of 10 nmol/L antagonized the anti-inflammatory effect of GCs .CONCLUSION:α7nAChR is involved in the anti-inflammatory effect of the physiological concentrations of GCs .
4.Clinic study on treating of cerebral infarction and carotid atherosclerosis by atorvastatin combined naoxintong capsule
Chinese Journal of Primary Medicine and Pharmacy 2013;20(3):391-393
Objective To investigate the effect of Atorvastatin Combined Naoxintong Capsule treats to cerebral infarction and carotid atherosclerosis.Methods 134 patients with cerebral infarction and carotid atherosclerosis were diagnosed by MRI or CT scan.They were randomly divided into two groups.67 cases were given atorvastatin versus aspirin received routine treatment in the control group and 67 cases were used Naoxintong capsule in observation group on the basis of routine treatment in the observation group.The blood lipid,serum high sensitive C-reactive protein (hs-CRP) level,neural function defect score (NIHSS),carotid artery intima-media thickness (IMT) were comperred before and after treatment in two groups for treated with 1 courses (6 months).Results The blood lipid had no significant difference between two groups before and after treatment (P < 0.05).The IMT,NIHSS score of high sensitivity C-reactive protein levels had no significant difference in two groups before and after treatment (P < 0.05).The scores of NIHSS,IMT,high sensitive C-reactive protein level respectively (10.08 ± 1.82) %,(1.06 ± 0.13)mm,(3.89 ± 1.41) mg/L of observation group were more decreased significantly than the control group (respectively (13.92 ±2.01)%,(1.24 ±0.15)mm,(5.02 ± 1.52) mg/L after treatment.Conclusion Atorvastatin Combined Naoxintong Capsule in treatment of cerebral infarction and carotid artery gruel kind hardening shows good therapeutic effect,it is worth for clinical use.
5.Antibacterial Activity and Antibacterial Action Sites of Bovine Lactoferricin
Mei-Chen AN ; Ning LIU ;
Microbiology 2008;0(10):-
Bovine Lactoferricin is a fragment of polypeptide which derives from N-terminal of bovine lactoferrin when it is digested by pepsin in acid condition. It has many biological functions. This study was designed to research the antibiosis spectrum of LfcinB and the key functional active site of the LfcinB by amino acid substitution and peptide sequence modification. Antimicrobial spectrum of the artificial synthesized LfcinB was determined by agar-well diffusion method. The antibacterial active sites were confirmed by minimal inhibitory concentration assays. After the Cysteine at the third site and the tryptophan at the eighth site of LfcinB were substituted by alanine, or two cysteine of LfcinB were respectively, the minimal inhibitory concentration of the three artificially modified LfcinBs was assayed. Results showed that LfcinB had a broad-spectrum of antibiosis, it could restrain various bacterials, such as Gram-positive bacteria, Gram-negative bacteria, fungus and mycetes. LfcinB was stable to heat and pH, it could not be inactivated by many protease. The tryptophan at the eighth site and the intramolecular disulfide bond formed between two cysteins played a key role for antibiosis, as the functional active sites of LfcinB.
6.Synergism and Attenuation of Fermented Radix Astragali Powder on Cyclophosphamide
China Pharmacy 2001;0(12):-
OBJECTIVE:To observe the synergism and attenuation of Fermented Radix Astragali Powder(FAP)on Cyc-lophosphamide(Cy),a tumor chemotherapeutics,and to explore more economical and effective assistant chemotherapeutics.METHODS:In synergism experiments,the mice tumor models(S180 and H22 solid tumor and H22 ascitic tumor)were used to observe the effects of FAP combined with Cy on tumor control rate and survival time of mice.In attenuation experiments,the effects of FAP against toxic reactions including myelosuppression,atrophy of immune organs,and lesions on renal function induced by high dose of Cy in mice were observed.RESULTS:FAP did enhanced the the antitumor effect of Cy on S180 and H22 solid tumor,lessened Cy-induced toxic reactions such as aleucocytosis,the reduction of the nucleated cells in bone marrow and the weight loss of spleen in mice,meanwhile,it showed protective effect on renal function yet without no significant influence on hepatic function.CONCLUSION:FAP has synergistic and attenuation effects on Cy.
7.Adverse Drug Reactions Induced by Antibiotics:Literature Analysis
China Pharmacy 2007;0(32):-
OBJECTIVE:To study the incidence,types,constitution ratio of adverse drug reactions(ADR)induced by antibiotics and the correlation factors of the ADR so as to promote rational drug use in our hospital.METHODS:The literature about antibiotics-induced ADR from Jan.1980 to May 2008 retrieved from CNKI,Wanfang Data and VIP full-text data base was analyzed quantitatively by dividing the literature into different categories:case study or typical case reports,clinical trial or observational reports,and regional ADR monitoring data base or hospital ADR analytical reports.RESULTS:There were 2 310 case studies or typical case reports and in which 3 794 ADR cases were reported,which manifested chiefly as allergic reaction(35.58%),nervous system reaction(17.82%)and disulfiram-like reaction(in 546 cases).928 papers were literature about clinical trial or observational reports and in which 9 434 ADR cases were reported and the average ADR incidence was 9.14%,with anti-tuberculosis drugs showing the highest proportion(25.57%),followed by nitromidazole(24.29%)and carbapenem antibiotics(23.52%);and the ADR manifested chiefly as gastrointestinal tract reaction and allergic reaction,and there were ADR cases manifested as pathoglycemia induced by quinolones.There were 300 papers were literature about regional ADR monitoring data base or hospital ADR analytical reports,in which almost all the major variety of antibiotics were involved,leading the list in terms of ADR cases were quinolones,penicillins and cephalosporins.CONCLUSION:Great importance should be attached to the rational use of antibiotics so as to avoid or reduce ADR incidence and ensure safe and effective use of antibiotics in patients.
8.Clinical Analysis of Primary Small Intestinal Tumor in 31 Cases
Journal of Medical Research 2006;0(01):-
Objective To explore the clinical characteristics and diagnosis of primary small intestinal tumor(PSIT). Methods Retrospective analysis of the clinical and pathological data of the 31 PSIT cases was made. Results Duodenum was the most common site 67.74% for PSIT. The confirmed diagnosis rate was 54.84%(17/31)(duodenum was 66.67%,14/21; ileum and jejunum was 30%, 3/10, respectively ). 3 cases were benign tumors and 28 were malignant tumors.The adenocarcinoma was the most frequently seen malignant PSIT followed by lymphoma and often in duodenal. The features of the small intestinal tumor could be abdominal pain,abdominal mass,hemorrhage,obstruction,jaundice and fever.The chief method for diagnose was barium meal X-ray examination, especially with the hypotonic contrast X-ray examination and endoscopy.Superior mesenteric arteriography sometimes helped in determing site of gastrointestinal haemorrhage. CT scan could be helpful in diagnosis. Conclusion Duodenal adenocarcinoma is most common PSIT,followed by malignant lymphoma.Endoscopy is the best way to find out the tumor located in duodenum and hypotonic contrast X-ray examination is effective in diagnosis and locating of small bowl tumors.Superior mesenteric arteriography is a good way to find out angioma and leiomyoma. CT scanning are also helpful.
9.Effect of metformin on the inhibinB,activinA and follistatin in polycystic ovary model rats
Chinese Pharmacological Bulletin 2003;0(10):-
Aim To observe the effect of metformin(MF)on inhibinB,activinA and follistatin in rat of polycystic ovary(PCO),analyzing the possible therapeutic mechanism and therapeutical effect from ovaries local cytokine.Methods The PCO rat models were set by insulin combined with human chorionic gonadotrophin(HCG).The levels of serum gonadal hormone and insulin(INS)were detected by radioimmunoassay.Using the sandwich ELISA technique the expressed level of serum inhibinB(INHB),activinA(ACTA)and follistatin(FS)was detected.Results Metformin could decrease the level of testosterone(T),luteotropic hormone(LH)and INS in rat serum,but it increased the level of ACTA in rat serum and the rate of ACTA/INHB.There was negative correlation between INS and ACTA,and positive correlation between INS and INHB.Conclusion MF can regulate the expression of ovaries local cytokines such as INHB,ACTA and FS.
10.Analysis on relevant factors of hyperthyroidism complicating hyperthyroid heart disease
Chinese Journal of Primary Medicine and Pharmacy 2006;0(05):-
Objective To investigate the relevant factors of hyperthyroidism complicating hyperthyroid heart disease.Method Among 48 cases,those factors including age,course of disease,condition and regular treatment were analyzed with Logistic multiple factor reg-ression analysis.Result The hyperthyroid heart disases was related with age,course of disease,condition and whether to treat regularly.Conclusions There are many factors to lead to hyperthroidism complicating hyperthyroid heart disease.It should be paid attention to in those patients with elder,longer course of disease,serious condition and no regular treatment.