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Involvement of GABA and opioid peptide receptors in sevoflurane-induced antinociception in rat spinal cord

Acta Pharmacologica Sinica 2005年第9期26卷 1045-1048页

作者： Ying-wei WANG~1 Xiao-ming DENG~2 Xin-min YOU~1 Shu-xiao LIU~2 Zhi-qi ZHAO~31 department of anesthesiology,Xinhua hospital,shanghai second medical university,shanghai 200092,china 2 department of anesthesiology,changhai hospital,second military medical university shanghai 200433,china 3 Institute of Neurobiology,Fudan university,shanghai 200433,china department of anesthesiology Xinhua Hospital Shanghai Second Medical University Shanghai China department of anesthesiology Changhai Hospital Second Military Medical University Shanghai China Institute of Neurobiology Fudan University Shanghai China

Aim:The spinal cord is pivotal in immobility induced by volatile anestheticsbecause the anesthetics depress the activity of motor neurons in the spinal *** aim of this study was to observe the effects of sevoflurane on pain process-ing at the spinal ***:The firing of the gastrocnemius muscle wasevoked by electrical stimulation to the ipsilateral hindpaw in *** nociceptiveC response of electromyography（EMG）was selected to *** GABAAreceptor antagonist bicuculline（0.1 mg/kg）and opioid receptor antagonist nalo-xone（0.4 mg/kg）were administered intravenously,either in the presence or in theabsence of 1.0% ***:In rats with transected spinal cord,sevoflurane produced a profound reduction in the C response in a dose-and time-dependent *** the presence of 1.0% sevoflurane,the C responses wereincreased after injections of bicuculline and ***:Sevofluraneis a volatile anesthetic that acts directly on the spinal cord to suppress the nocice-ptive *** sevoflurane-induced suppression of the C response is antago-nized by either bicuculline or *** results suggest that spinal GABAAreceptors and opioid peptide receptors are involved in the sevoflurane-inducedsuppression of spinal nociception.

关键词： sevoflurane spinal cord pain measurement GABA receptors opioid receptors

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Dexmedetomidine reverses peripheral inflammation-induced acitivation of astrocytes in the spinal cord

Dexmedetomidine reverses peripheral inflammation-induced aci...

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中国神经科学学会第四次会员代表大会暨第八届全国学术会议

作者： Bo XU~(1,2),Hua XU~2,Wei-Shi ZHANG~2,Xiao-Ming DENG~2,Yu-Qiu ZHANG~(1,*) 1 Institute of Neurobiology,Institutes of Brain Science and State Key Laboratory of medical Neurobiology,Fudan university,shanghai 200032,china 2 department of anesthesiology,changhai hospital,The second military medical university,shanghai 200433,china

＜正＞Objective Spinal glia is of the utmost importance in developing and maintaining allodynia and hyperalgesia following tissues inflammation or *** systemically and intrathecally administered dexmedetomidine exhibited significant analgesic effect in human with inflammatory disease and animals with ***,whether the spinal glial functional states are involved in the analgesic effect of dexmedetomidine is still *** present study investigated the effects of systemic repeated administration of dexmedetomidine on thermal hyperalgesia and spinal glial activation evoked by monoarthritis（MA）.Methods Monoarthritis was induced by an intra-articular injection of Complete Freund’s Adjuvant（CFA）.Paw withdrawal latency（PWL） by radiant heat was *** analyzed cell markers GFAP for astrocytes and Iba-1 for microglia in the spinal ***（1） Extensive activation of astrocytes and microglia were found in the spinal dorsal horn of MA rats.（2） Repeated intraperitoneal（i.p.） administration of dexmedetomidine（10μg/kg） significantly attenuated MA-induced thermal hyperalgesia and suppressed spinal astrocytic but not microglial activation.（3） Double immunofluorescence showed that a2ARs immunoreactivities were widely colocalized with GFAP,an astrocytic marker,but not with Iba-1,a microglial marker,in the spinal *** Blockade of spinal astrocytic activation was involved in anti-nociceptive mechanisms of dexmedetomidine.

关键词： dexmedetomidine astrocyte microglia monoarthritis thermal hyperalgesia rat

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CYP2E1 Pst Ⅰ/Rsa Ⅰ polymorphism and colorectal cancer risk:A meta-analysis

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World Journal of Gastroenterology 2010年第23期16卷 2949-2953页

作者： Guo-Wu Zhou,Jia Hu,Qiang Li department of Respiration,changhai hospital,second military medical university,shanghai 200433,china department of Oncology,changhai hospital,second military medical university,shanghai 200433,china department of Respiration Changhai Hospital Second Military Medical University Shanghai 200433 China.

AIM:To clarify the association between CYP2E1 PstⅠ/RsaⅠ polymorphism and susceptibility to colorectal ***:A meta-analysis based on 10 eligible casecontrol studies involving 4979 cases and 6012 controls was carried out to summarize the data on the association between CYP2E1 RsaⅠ/PstⅠ polymorphism and colorectal cancer ***:In comparison of the homozygote c2c2 and c2 carriers(c1c2 + c2c2) and the homozygous wild-type genotype(c1c1),no association was found between CYP2E1 RsaⅠ/PstⅠ polymorphism and colorectal cancer risk [odds ratio(OR)=1.24(95% CI:0.93-1.66) for c2c2;OR = 1.02(95% CI:0.88-1.19) for c2 carriers].In stratif ied analysis,Caucasians with c2c2 homozygote appeared to have an increased risk of colorectal cancer(OR=2.67,95% CI:1.03-6.89,P=0.043),no signif icant associations were found in other ***:c2c2 homozygote of CYP2E1 PstⅠ/RsaⅠ polymorphism may be associated with the increased risk of colorectal cancer in Caucasians,which needs further investigations.

关键词： Cytochrome P450 2E1 PstⅠ/RsaⅠ polymorphism Colorectal cancer Cancer susceptibility Metaanalysis

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Complete resection of isolated pancreatic metastatic melanoma:A case report and review of the literature

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World Journal of Gastroenterology 2010年第36期16卷 4621-4624页

作者： Miao-Xia He,Hui Jiang,Jian-Ming Zheng,department of Pathology,changhai hospital,second military medical university,shanghai 200433,china Bin Song,Xian-Gui Hu,Yi-Jie Zhang,department of General Surgery,changhai hospital,second military medical university,shanghai 200433,china department of Pathology Changhai Hospital Second Military Medical University Shanghai 200433 China.

Isolated metastatic melanoma of the pancreas is very ***,there is very limited experience with surgical resection of pancreatic *** potential benefit of metastasectomy can improve the quality of life and survival time of *** present a case of a 39-year-old Chinese male with a solitary pancreatic tumor which was considered a cystic benign lesion for *** and immunohistochemistry showed that the tumor in pancreatic tail was a metastasis from a malignant melanoma of the *** other metastastic foci were found in *** tumor was completely resected with combined distal pancreatectomy and *** patient has survived 25 mo without any signs of local recurrence or other metastatic lesions after operation,indicating that complete surgical resection of a solitary metastatic melanoma of the pancreas can prolong the survival time of patients.

关键词： Melanoma Metastasis Pancreas Solitary tumor Resection

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Isoform of Vascular Endothelial Cell Growth Inhibitor (VEGI72-251) Increases Interleukin-2 Production by Activation of T Lymphocytes

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Acta Biochimica et Biophysica Sinica 2006年第4期38卷 249-253页

作者： Jing-Juan YAO~1 Min ZHANG~1 Xiao-Hui MIAO~2 Ping ZHAO~1 Shi-Ying ZHU~1 Hui DING~1 Zhong-Tian QI~1 1 Key Laboratory for medical Microbiology,PLA,department of Microbiology,second military medical university,shanghai 200433,china 2 department of Infectious Diseases,Changzheng hospital,second military medical university shanghai 200433,china Key Laboratory for medical Microbiology PLA Department of Microbiology Second Military Medical UniversityShanghai 200433 China department of Infectious Diseases Changzheng Hospital Second Military Medical UniversityShanghai 200433 China

The objective of this study is to investigate the characteristics of the recombinant variant ofhuman vascular endothelial cell growth inhibitor,VEGI72-251,and compare its biological activities with that ofits prototype VEGI24-174,The recombinant plasmid containing the variant VEGI72-251gene was constructedand expressed in Escherichia *** effects of the expressed VEGI72-251on cell proliferations were checkedin the human umbilical vein endothelial cell line and certain tumor cell lines （ECV304 and B 16）.The inhibitionof VEGI72-251on angiogenesis was detected in the chorioallantoic membrane of chick *** comparisonwith VEGI24-174,the recombinant human VEGI72-251seems to have no effect on the proliferation of endothelialcells and the angiogenesis of the chorioallantoic membrane in *** enzyme-linked immunosorbent assay-based method was used for the measurement of interleukin-2 （IL-2） production by peripheral blood monocytes（PBMCs） treated with *** were pretreated with VEGI72-251（1.25-12.50μg/ml） for 24 h invitro,and the IL-2 concentration in PBMC medium was increased from 354 pg/ml to 1256 pg/*** can beconcluded that VEGI72-251is able to increase the level of human IL-2 production by the activation of *** from VEGI24-174on anti-angiogenesis,VEGI72-251may serve as an anti-cancer factorthrough its activation of T lymphocytes.

关键词： vascular endothelial cell growth inhibitor biological activity interleukin-2

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Adenovirus-expressed preS2 antibody inhibits hepatitis B virus infection and hepatic carcinogenesis

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World Journal of Gastroenterology 2012年第4期18卷 349-355页

作者： Qian Zhang,department of Infectious Diseases,changhai hospital,second military medical university,shanghai 200433,china Zhi-Qing Li,Hu Liu,Jia-He Yang,department of Hepatic Surgery,Eastern Hepatobiliary Surgery hospital,second military medical university,shanghai 200438,china Qian Zhang Department of Infectious Diseases Changhai Hospital Second Military Medical University Shanghai 200433 China.

AIM:To investigate the inhibitory effect of hepatitis B virus (HBV) preS2 antibody (preS2Ab) against HBV in-fection and HBV-associated hepatic ***:An adenoviral vector carrying the full-length light and heavy chains of the HBV preS2Ab gene,Ad315-preS2Ab,was *** linked immunosorbent assay (ELISA) and Western blotting analyses were used to determine the preS2Ab expres-sion levels in *** techniques were used to examine the binding affinity between the expressed HBV preS2Ab and HBV-positive liver *** were also used to determine hepatitis B surface antigen (HBsAg) levels to assess the inhibitory effect of the preS2Ab against HBV infection in L02 *** inhibitory effect of preS2Ab against hepatic carcinogen-esis was studied with diethylnitrosamine (DEN)-induced hepatocellular carcinomas (HCCs) in HBV transgenic ***:The expression of HBV preS2Ab increased with increases in the multiplicity of infection (MOI) of Ad315-preS2Ab in L02 cells,with 350.87 ± 17.37 μg/L of preS2Ab when the MOI was 100 plaque forming units (pfu)/*** expressed preS2Abs could recog-nize liver cells from HBV transgenic *** results showed that L02 cells expressing preS2Ab produced less HBsAg after treatment with the serum of HBV pa-tients than parental L02 cells expressing no *** transgenic mice treated with Ad315-preS2Ab had fewer and smaller cancerous nodes after induction with DEN than mice treated with a blank Ad315 vec-tor or untreated ***,the administration of Ad315-preS2Ab could alleviate hepatic cirrhosis and decrease the serum levels of alanine transaminase and aspartate ***:Adenovirus-mediated HBV preS2Ab expression could inhibit HBV infection in L02 cells,and then inhibit DEN-induced hepatocellular carcinogenesis and protect hepatic function in HBV transgenic mice.

关键词： Hepatitis B virus Adenoviral vector PreS2 antibody Hepatocellular carcinoma Gene therapy

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Protective effect of steroidal saponins from rhizome of Anemarrhena asphodeloides on ovariectomy-induced bone loss in rats

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Acta Pharmacologica Sinica 2006年第6期27卷 728-734页

作者： Hua NIAN~2 Lu-ping QIN~2 Wan-sheng CHEN~3 Qiao-yan ZHANG~(2,4)Han-chen ZHENG~2 Yin WANG~5 2 department of Pharmacognosy,School of Pharmacy,second military medical university,shanghai 200433.china 3 department of Pharmacy,Changzheng hospital,second military medical university,shanghai 200003,china 5 № 455 hospital of PLA,shanghai 200052,china department of Pharmacognosy School of Pharmacy Second Military Medical University Shanghai China department of Pharmacy Changzheng Hospital Second Military Medical University Shanghai China No 455 hospital of PLA Shanghai China

Aim:To investigate the protective effect of steroidal saponins from Anemarrhenaasphodeloides（ATS）on ovariectomy（OVX）-induced bone ***:Sprague-Dawley rats were divided into sham and OVX *** OVX ratswere treated with vehicle,nylestriol or steroidal saponins extract for 12 *** calcium,phosphorus,estradiol（E2）,osteocalcin concentration and serumalkaline phosphatase activity were *** density was assayed by dual-energy X-ray *** undecalcified longitudinal proximal tibial meta-physical（PTM）sections were cut and stained for histomorphometric analysis ofthe ***:In OVX rats,alkaline phosphatase activities in serum weremarkedly increased and concentrations of osteocalcin were decreased by ATStreatment,which had no influence on the body ***,atrophy of theuterus and descent of bone mineral density（BMD）was suppressed by treatmentwith *** addition,ATS completely corrected the decreased the concentrationof calcium and E2in serum observed in OVX *** results showedATS prevented decreases in trabecular thickness and increases in trabecular sepa-ration of proximal tibia metaphysis（PTM）in OVX ***,it did not alterosteoclast number in OVX ***,ATS（300 mg/kg）had a remarkableeffect on promoting bone formation action in OVX *** treatmentdecreased the bone formation rate and mineral apposition ***:Anadequate supply of steroidal saponins of Anemarrhena asphodeloides preventedOVX-induced bone loss in rats through the promotion of bone formation but notthe inhibition of bone resorption.

关键词： Anemarrhena asphodeloides ovariectomy osteoporosis serum bone mineral density histochemistry

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Changes in Autoantibodies against β1-Adrenoceptor and M2-Muscarinic Receptor during Development of Renovascular Hypertension in Rats

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Acta Biochimica et Biophysica Sinica 2004年第12期36卷 793-797页

作者： Jian-Ming ZHI*, Rong-Fang CHEN1, Heng WU2, Hui-Rong LIU2, and Rong-Rui ZHAO2 department of Physiology, shanghai second medical university, shanghai 200025, china 1department of Toxicology, second military medical university, shanghai 200433, china 2 department of Physiology, Shanxi medical university, Taiyuan 030001, china department of Physiology Shanghai Second Medical UniversityShanghai 200025 China department of Toxicology Second Military Medical UniversityShanghai 200433 China department of Physiology Shanxi Medical UniversityTaiyuan 030001 China

In an experimental rat’s renovascular hypertension model, we studied the genesis of anti- cardiac β1-adrenoceptor and M2-muscarinic receptor autoantibodies in relation to the changes in immunological function during the development of renal hypertension. The biological activities of these autoantibodies were also examined. It was shown that after two weeks of operation both the frequency of occurrence and the titre of autoantibodies to cardiac β1-adrenoceptor and M2-muscarinic receptor were significantly increased as compared with the control of pre-treatment. The increased autoantibodies lasted for several weeks and then automatically decreased gradually to the pre-clipping level at 10 weeks. Meanwhile the ratio of CD4 /CD8 + + was also undergone an initial increase followed by gradual recovery and correlated well with the changes in antibody titre. The biological effects of these autoantibodies displayed an “agonistic-like” activities on the beating frequency of cultured neonatal cardiomyocyte. It is suggested that autoimmune mechanisms are involved in the pathogenesis of renal hypertension and the cardiac receptor autoantibodies might be one of the mechanisms leading to cardiac dysfunction.

关键词： autoantibody renal hypertension cardiac receptor immunology

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Blood pressure,baroreflex sensitivity,and end organ damage in hybrid offspring of spontaneously hypertensive rats and Spraque-Dawlev rats

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Acta Pharmacologica Sinica 2005年第9期26卷 1049-1056页

作者： He-hui XIE~2 Fu-ming SHEN~2 Chao-yu MIAO Ding-feng SU~3 department of Pharmacology,second military medical university,shanghai 200433,china department of Pharmacology Second Military Medical University Shanghai China

Aim:To investigate the blood pressure(BP),baroreflex sensitivity(BRS),andorgan damage in hybrids of spontaneously hypertensive rats and ***:Spontaneously hypertensive rats and Sprague-Dawley rats werecrossbred,and the F1hybrids were inbred randomly to produce an *** the age of 52 weeks,the F1and F2hybrids were tested to determine BP and BRSin a conscious *** examinations were carried out after BPrecording and BRS ***:BP and BRS were not different in F1and *** was inversely related to systolic BP(SBP)in male,female,or wholepopulations of ***,BRS values were one-third determined bySBP level(the determinant coefficient was 0.326).The indexes for left ventricularhypertrophy,aortic hypertrophy,and renal damage were all positively related toBP,and negatively related to *** multiple-regression analysis,left ventricularand aortic hypertrophy and glomerulosclerosis score were all most significantlyassociated with lower BRS and higher systolic *** contribution of BRS to leftventricular and aortic hypertrophy and glomerulosclerosis was greater than thatof ***:The present work with hybrid rats demonstrated quantita-tively that the BRS value was one-third determined by SBP *** BP leveland BRS value contributed greatly to the hypertensive organ ***,the contribution of BRS to the hypertensive organ damage was greater than thatof BP level in these rats.

关键词： baroreflex blood pressure end organ damage hypertension genetic hybridization

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Tolerance of Mice to Lipopolysaccharide is Correlated with Inhibition of Caspase-3-mediated Apoptosis in Mouse Liver Cells

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Acta Biochimica et Biophysica Sinica 2007年第2期39卷 96-100页

作者： Jie LUAN Bingrong ZHOU Hui DING and Zhongtian QI department of Microbiology,State Key Laboratory of medical Immunology,second military medical university,shanghai 200433,china department of Microbiology State Key Laboratory of Medical Immunology Second Military Medical UniversityShanghai 200433 China

Bacterial endotoxin lipopolysaccharide (LPS) often results in multiple organ ***,pre-exposure of mice to a sublethal dose of LPS renders the animal tolerant to a lethal dose of *** was designed to determine whether pre-exposure of a small dose of LPS was able to suppressapoptosis in mice when challenged with LPS in combination with D-galactosamine,and to investigate theexpression changes of the apoptosis-associated *** results showed that a characteristic apoptoticDNA fragmentation existed in mouse livers of the LPS-naive group,but not in control groups;and the miceof the LPS-naive group were all dead after 2 ***,in the LPS-tolerance groups,both the lethal rateand apoptotic DNA fragmentation were suppressed after the mice were challenged with LPS/D-galactosamine,and the protection against the lethality and apoptotic reaction could be maintained for up to 7 *** thisperiod, significantly lower levels of caspase-3 and its mRNA appeared in LPS-tolerant groups compared tothose of the LPS-naive group (P<0.05),and the caspase-3 activities gradually recovered as the observationwas *** findings suggest that LPS tolerance could suppress apoptosis in mouse liver cells,andthe expression and activity of caspase-3 could be down-regulated.

关键词： lipopolysaccharide endotoxin tolerance apoptosis caspase-3

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