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Dang YH, Zhao Y, Xing B, Zhao XJ, Huo FQ, Tang JS, Qu CL, Chen T. The role of dopamine receptors in ventrolateral orbital cortex-evoked anti-nociception in a rat model of neuropathic pain. Neuroscience 2010; 169:1872-80. [PMID: 20599592 DOI: 10.1016/j.neuroscience.2010.06.050] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2010] [Revised: 06/21/2010] [Accepted: 06/23/2010] [Indexed: 11/18/2022]
Abstract
The present study examined the role of dopamine and D(1)-and D(2)-like dopamine receptors in ventrolateral orbital cortex (VLO)-evoked anti-hypersensitivity in a rat model of neuropathic pain, as well as the possible underlying mechanisms. Results showed that microinjection of apomorphine [(R(-)-apomorphine hydrochloride)], a non-selective dopamine receptor agonist, into the VLO attenuated spared nerve injury (SNI)-induced mechanical allodynia in a dose-dependent manner. This effect was completely blocked by the D(2)-like dopamine receptor antagonist S(-)-raclopride(+)-tartrate salt (1.5 microg), but was enhanced by the D(1)-like dopamine receptor antagonist SCH23390 (R(+)-SCH-23390 hydrochloride, 5.0 microg). The attenuating effect of apomorphine on mechanical allodynia was mimicked by application of the D(2)-like dopamine receptor agonist quinpirole [((-)-quinpirole hydrochloride, 0.5, 1.0, and 2.0 microg)]. In addition, microinjection of larger doses (10 and 20 microg) of SCH23390 into the VLO significantly attenuated allodynia. Furthermore, microinjections of GABA(A) receptor antagonists, bicuculline [(+)-bicuculline,(S), 9(R)] and picrotoxin (200 and 300 ng for both drugs), into the VLO attenuated mechanical allodynia. A small dose of bicuculline or picrotoxin (100 ng) resulted in increased quinpirole (0.5 microg)-induced anti-allodynia. In contrast, GABA(A) receptor agonists, muscimol hydrochloride (250 ng) or THIP [(2,5,6,7-retrahydroisoxazolo(5,4-c)pyridine-3-ol hydrochloride, 1.0 microg)], blocked quinpirole (2.0 microg)-induced attenuation. These results suggest that the dopaminergic system is involved in mediating VLO-induced anti-hypersensitivity, activation of D(2)-like dopamine receptors, and inhibition of D(1)-like receptors resulting in anti-hypersensitivity. In addition, the mechanisms of GABAergic disinhibition might be involved in D(2)-like receptor mediating effects in neuropathic pain.
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Zhao XJ, Li DC, Zhang QF, Wang DQ, Dou JM. The novel example of organotin(IV) metallacrowns: Syntheses, characterizations and crystal structures of [12-MC[RSn(IV)]N(shi)-4] complexes (R=Et, Bu, Ph; Shi=salicylhydroxamic acid). INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2009.12.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zhao XJ, Wang ZY, Jiang MH, Zhang W, Cao LJ, Ma ZN, Dong NZ, Bai X, Yu ZQ, Ruan CG. [Inherited dysfibrinogenemia caused by Arg16His mutation in alpha chain of fibrinogen.]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2010; 31:154-156. [PMID: 20510102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
OBJECTIVE To analyze the phenotype and genotype of a family with inherited dysfibrinogenemia. METHODS Assays of coagulation, including activated partial thromboplastin time (APTT), prothrombin time (PT) and thrombin time (TT), were carried out with Stago Compact in the proband and his family members. The activity and antigen of fibrinogen in plasma were determined by Clauss and immunoturbidimetry, respectively. Fibrinogen and its constituent were analyzed by Western blot with nonreducing 4%-20% SDS-polyacrylamide gel electrophoresis (PAGE). All exons and exon-intron boundaries of fibringen genes FGA, FGB and FGG were analyzed by PCR and then direct sequencing. RESULTS The proband had normal APTT and PT, but prolonged TT. The activity of fibrinogen in plasma was decreased while its antigen level was normal. These abnormalities were also found in his mother and a sister. Genetic analysis revealed heterozygous G1233A in the exon 2 of FGA originating from his mother, which resulted in Arg16His missense mutation. CONCLUSION Inherited dysfibrinogenemia was caused by Arg16His mutation in exon 2 of FGA, and this is the first case reported in a Chinese family.
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An YL, Gao Y, Zhu Q, Ning G, Jia WP, Huang Q, Xu W, Li CJ, Zhou ZG, Shi BY, Shan ZY, Chen LL, Xu ZR, Wang H, Yan L, Zhong HJ, Ji QH, Li H, Xue YM, Zhing MX, Gu W, Guo XH, Gao LL, Hong J, Liu F, Zou DJ, Li YB, Zhang XY, Li Z, Guo G, Zhao XJ, Wu HN, Wang YZ, Zhao WG, Zhang SL, Wu J, Zhang NY, Yang FY, Zhang Y, Zhou XR, Ren YZ, Li GW. [Features of insulin secretion and insulin resistance in newly diagnosed type 2 diabetes of different body mass indices]. ZHONGHUA YI XUE ZA ZHI 2009; 89:1117-1121. [PMID: 19595144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVE To investigate insulin secretion function and insulin resistance in Chinese newly diagnosed type 2 diabetes (obese and non-obese patients) in order to provide evidence for clinical treatment. METHODS 408 newly diagnosed type 2 diabetes and 40 normal controls were recruited. Height, weight were measured, insulin and glucose of 0 min, 30 min, 60 min, 120 min during oral glucose tolerance test were examined. The patients with fasting glucose level greater than 8.3mmol/L were treatment with Gliclazide for 1 - 3 months. After normalization of the plasma glucose levels for more than 2 weeks, and withdraw this medication for 48 hours, then OGTT were repeated to assess IR and IS. RESULTS The patients were divided into four groups based on fasting plasma glucose (DM1: FPG < 6.9mmol/L; DM2: 6.9 mmol/L < or = FPG < 8.3 mmol/L; DM3: 8.3 mmol/L < or = FPG < 9.7 mmol/L; DM4: FPG > or = 9.7 mmol/L). Every groups were further stratified to subgroups by cut point of BMI = 24 kg/m(2). Their insulin sensitivity and insulin secretion function compared between subgroups. (1) True insulin level in BMI > or = 24 (FPG < 6.9 mmol/L) subgroups were higher than control's (3.5 +/- 0.5 vs 3.2 +/- 0.6 natural logarithm) (P < 0.05). (2) In BMI > or = 24 subgroups, their insulin sensitivity were even worse than BMI < 24 groups', but their insulin secretion function were better at the same FPG level. (3) After intervention, the change of insulin sensitivity in BMI < 24 group was better than BMI > or = 24 group's (-4.7 +/- 0.9 vs -5.5 +/- 1.4 natural logarithm) (P < 0.05); but the change of insulin secretion function in BMI < 24 group was worse. CONCLUSION (1) In newly diagnostic type 2 diabetes, insulin sensitivity and insulin secretion function were decreased with the increase of FPG, but they were different between obese and non-obese group. (2) Insulin secretion function was recovered better in obese group when eliminated glucose toxicity.
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Zhao XJ, Liu JG, Li HS, Fan L, Yang SY. Synthesis and properties of fluorinated polyimides from 1,1-bis(4-amino-3,5-dimethylphenyl)-1-(3,4,5-trifluorophenyl)-2,2,2-trifluoroethane and various aromatic dianhydrides. J Appl Polym Sci 2009. [DOI: 10.1002/app.29235] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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McNeil LK, Murphy E, Zhao XJ, Guttmann S, Harris SL, Scott AA, Tan C, Mack M, DaSilva I, Alexander K, Mason K, Jiang HQ, Zhu D, Mininni TL, Zlotnick GW, Hoiseth SK, Jones TR, Pride MW, Jansen KU, Anderson AS. Detection of LP2086 on the cell surface of Neisseria meningitidis and its accessibility in the presence of serogroup B capsular polysaccharide. Vaccine 2009; 27:3417-21. [PMID: 19200847 DOI: 10.1016/j.vaccine.2009.01.075] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The outer membrane protein LP2086, a human factor H binding protein, is undergoing clinical trials as a vaccine against invasive serogroup B meningococcal (MnB) disease. As LP2086 is a surface protein, expression of capsular polysaccharide could potentially limit accessibility of anti-LP2086 antibodies to LP2086 expressed on the surface of bacteria. To determine whether variability in expression levels of the serogroup B capsule (Cap B) might interfere with accessibility of anti-LP2086 antibody binding to LP2086, we evaluated the ability of anti-Cap B and anti-LP2086 antibodies to bind to the surface of 1263 invasive clinical MnB strains by flow cytometry. One of the anti-LP2086 monoclonal antibodies used recognizes virtually all LP2086 sequence variants. Our results show no correlation between the amount of Cap B expressed and the binding of anti-LP2086 antibodies. Furthermore, the susceptibility of MnB bacteria to lysis by anti-LP2086 immune sera was independent of the level of Cap B expressed. The data presented in this paper demonstrates that Cap B does not interfere with the binding of antibodies to LP2086 expressed on the outer membrane of MnB clinical isolates.
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Yang HY, Wang ZY, Cao LJ, Zhao XJ, Bai X, Ruan CG. [Expression and function of non-muscle myosin-IIA in Fechtner syndrome]. ZHONGGUO SHI YAN XUE YE XUE ZA ZHI 2008; 16:871-874. [PMID: 18718080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The study was purposed to investigate the expression and function of non-muscle myosin heavy chain-IIA (NMMHC-IIA) in Fechtner syndrome in order to explore the pathologic changes of kindy disease and the mechanism of granulocyte inclusion body formation. NMMHC-IIA levels in granulocytes were analyzed by Western-blot, the expressions of NMMHC-IIA, IIB in HEK-293 cells were detected by RT-PCR and were analyzed by co-immunoprecipitation. The results indicated that the IIA/beta-actin ratio for Fechtner syndrome granulocytes was (0.35 +/- 0.12), and obviously decreased as compared with that of normal control (0.87 +/- 0.18) (p < 0.01). The IIA and IIB expressed higher in HEK-293 cells. The interaction of IIA and IIB was confirmed by co-immunoprecipitation in HEK-293 cells. It is concluded that dominant-negative effect of NMMHC-IIA is involved in the formation of inclusion bodies. IIA and IIB show obvious interaction, IIB partly compensates the IIA defect derived from MYH9 mutations, and may delay or prevent the development of clinically relevant abnormalities.
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Cao LJ, Wang ZY, Su YH, Yang HY, Zhao XJ, Zhang W, Yu ZQ, Bai X, Ruan CG. [Gene analysis of five inherited factor V deficiency cases]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2008; 29:145-148. [PMID: 18788609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVE To identify gene mutations involved in five cases of inherited factor V (FV) deficiency. METHODS Activity of FV was determined by one-stage clotting assay using FV-deficiency plasma, and FV antigen by an ELISA assay. All the exons and exon-intron boundaries of FV gene were amplified by PCR and then DNA sequencing. Restriction enzyme analysis was used to analyze the probands, their family members and healthy volunteers. RESULTS Both activity and antigen of FV in the 5 patients were extremely lower compared with that of normal mixed plasma. Six mutations were identified in these 5 patients, G69969T (G2079V), C45533T (R712Ter), C46796T (R1133Ter), G45366A (C656Y), C46253T (R952C) and G16088C (D68H), the latter three were novel mutations reported for the first time and the C46253T (R952C) was the first missense mutation reported in B domain. The result of sequencing or restriction enzyme analysis showed that the three novel missense mutations were not caused by single nucleotide polymorphisms. CONCLUSION Gene mutations in 5 type I inherited FV deficiency of patients including 2 nonsense mutations and 4 missense mutations identified which led to the instability of FV protein and the reducing of FV: Ag in the plasma.
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Wang ZY, Su YH, Yang HY, Yu ZQ, Cao LJ, Zhao XJ, Hu H, Zhan SH, Ruan CG. [Proteus syndrome with a giant hemangiomas in the spleen associated with chronic DIC--two case report and literature review]. ZHONGHUA XUE YE XUE ZA ZHI = ZHONGHUA XUEYEXUE ZAZHI 2007; 28:152-5. [PMID: 17649705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
OBJECTIVE To investigate the clinical manifestations, pathologic features and laboratory findings in two Proteus syndrome patients with giant hemangiomas in the spleen and chronic DIC. METHODS Ultrasound imaging and magnetic resonance imaging (MRI) were used for analysing the characteristics of the giant hemangiomas in the spleen. The spleen specimen was examined pathologically for the feature of the hemangioma. Homostatic tests were performed by routine laboratory methods. RESULTS Two Proteus syndrome patients with giant hemangiomas in the spleen causing chronic DIC (Kasabach-Merritt syndrome) were first reported. They were recovered after splenectomy. CONCLUSION Proteus syndrome when accompanied giant hemangioma could cause chronic DIC. Significantly decreased plasma fibrinogen level in this case might be helpful for the differential diagnosis from DIC caused by other diseases.
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen J, Chen ML, Chen YB, Chi SP, Chu YP, Cui XZ, Dai HL, Dai YS, Deng ZY, Dong LY, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Fu HY, Gao CS, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Harris FA, He KL, He M, He X, Heng YK, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Ji XB, Jia QY, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Lai YF, Li F, Li G, Li HB, Li HH, Li J, Li JC, Li QJ, Li RB, Li RY, Li SM, Li WG, Li XL, Li XQ, Li XS, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu ZA, Liu ZX, Lu F, Lu GR, Lu JG, Luo CL, Luo XL, Ma FC, Ma JM, Ma LL, Ma QM, Ma XY, Mao ZP, Mo XH, Nie J, Nie ZD, Olsen SL, Peng HP, Qi ND, Qian CD, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tao N, Tian YR, Tong GL, Varner GS, Wang DY, Wang JX, Wang JZ, Wang K, Wang L, Wang LS, Wang M, Wang P, Wang PL, Wang SZ, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wei DH, Wu N, Wu YM, Xia XM, Xie XX, Xin B, Xu GF, Xu H, Xu Y, Xue ST, Yan ML, Yang F, Yang HX, Yang J, Yang SD, Yang YX, Ye M, Ye MH, Ye YX, Yi LH, Yi ZY, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JY, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XM, Zhang XY, Zhang YJ, Zhang YY, Zhang Y, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JB, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao XJ, Zhao YB, Zhao ZG, Zheng HQ, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu Y, Zhu ZA, Zhuang BA, Zou BS. Observation of two new N* peaks in J/psi-->ppi-n and ppi+n decays. PHYSICAL REVIEW LETTERS 2006; 97:062001. [PMID: 17026161 DOI: 10.1103/physrevlett.97.062001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2004] [Indexed: 05/12/2023]
Abstract
The decay J/psi-->NNpi provides an effective isospin 1/2 filter for the piN system due to isospin conservation. Using 58x10(6) J/psi decays collected with the Beijing Electromagnetic Spectrometer at the Beijing Electron Positron Collider, more than 100 thousand J/psi-->ppi-n+c.c. events are obtained. Besides the two well-known N* peaks at around 1500 MeV/c2 and 1670 MeV/c2, there are two new, clear N* peaks in the ppi invariant mass spectrum around 1360 MeV/c2 and 2030 MeV/c2 with statistical significance of 11sigma and 13sigma, respectively. We identify these as the first direct observation of the N*(1440) peak and a long-sought missing N* peak above 2 GeV/c2 in the piN invariant mass spectrum.
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Liu JG, Zhao XJ, Yang HX, Li HS, Fan L, Yang SY. Novel High Temperature Polypyrrolones with Asymmetric Biphenyl Moieties in the Main Chain: Synthesis and Characterization. MACROMOL CHEM PHYS 2006. [DOI: 10.1002/macp.200600132] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Zhao XJ, Liu JG, Rui JM, Fan L, Yang SY. Synthesis and characterization of organosoluble polyfluorinated polyimides derived from 3,3′,5,5′-tetrafluoro-4,4′-diaminodiphenylmethane and various aromatic dianhydrides. J Appl Polym Sci 2006. [DOI: 10.1002/app.24616] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Sack U, Hoffmann M, Zhao XJ, Chan KS, Hui DSC, Gosse H, Engelmann L, Schauer J, Emmrich F, Hoheisel G. Vascular endothelial growth factor in pleural effusions of different origin. Eur Respir J 2005; 25:600-4. [PMID: 15802331 DOI: 10.1183/09031936.05.00037004] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This study aimed to determine the diagnostic relevance of vascular endothelial growth factor (VEGF) in the pleural fluid and serum of patients with pleural effusions of different aetiology. VEGF was quantified in the pleural effusion fluid and serum of 96 patients with malignancies (58 lung cancers (CA) and 38 tumours with secondaries to the lung (TM)), 45 with congestive heart failure (CHF), 28 with tuberculosis (TB), 45 with acute infections (INF), and in the serum of 20 healthy controls. VEGF pleural effusion concentrations were significantly different in the main diagnostic groups. VEGF was higher in effusions of patients with malignancies (CA as well as TM) in comparison with INF, TB or CHF. In serum, however, high VEGF concentrations indicated CA, TM or INF, but not TB or CHF. Despite significant differences of VEGF levels in different patient groups, receiver-operating characteristic analysis revealed insufficient diagnostic value of VEGF for differential diagnosis of pleural effusions. In conclusion, vascular endothelial growth factor serum concentration is highly suggestive of the presence of lung disease in general, except for tuberculosis. In effusion fluid, the presence of vascular endothelial growth factor clearly indicates inflammatory or malignant origin. However, for diagnostic use, additional parameters besides vascular endothelial growth factor are mandatory.
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen J, Chen ML, Chen YB, Chi SP, Chu YP, Cui XZ, Dai HL, Dai YS, Deng ZY, Dong LY, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Fu HY, Gao CS, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Harris FA, He KL, He M, He X, Heng YK, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Ji XB, Jia QY, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Lai YF, Li F, Li G, Li HH, Li J, Li JC, Li QJ, Li RB, Li RY, Li SM, Li WG, Li XL, Li XQ, Li XS, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu ZA, Liu ZX, Lu F, Lu GR, Lu JG, Luo CL, Luo XL, Ma FC, Ma JM, Ma LL, Ma QM, Ma XY, Mao ZP, Mo XH, Nie J, Nie ZD, Olsen SL, Peng HP, Qi ND, Qian CD, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tao N, Tian YR, Tong GL, Varner GS, Wang DY, Wang JX, Wang JZ, Wang K, Wang L, Wang LS, Wang M, Wang P, Wang PL, Wang SZ, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wei DH, Wu N, Wu YM, Xia XM, Xie XX, Xin B, Xu GF, Xu H, Xu Y, Xue ST, Yan ML, Yang F, Yang HX, Yang J, Yang SD, Yang YX, Ye M, Ye MH, Ye YX, Yi LH, Yi ZY, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JY, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XM, Zhang XY, Zhang YJ, Zhang YY, Zhang Y, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JB, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao XJ, Zhao YB, Zhao ZG, Zheng HQ, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu Y, Zhu ZA, Zhuang BA, Zou BS. Observation of a threshold enhancement in the plambda invariant-mass spectrum. PHYSICAL REVIEW LETTERS 2004; 93:112002. [PMID: 15447331 DOI: 10.1103/physrevlett.93.112002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2004] [Indexed: 05/24/2023]
Abstract
An enhancement near the m(p)+M(Lambda) mass threshold is observed in the combined pLambda and pLambda invariant-mass spectrum from J/psi-->pK(-)Lambda;+c.c. decays. It can be fit with an S-wave Breit-Wigner resonance with a mass m=2075+/-12(stat)+/-5(syst) MeV and a width of Gamma=90+/-35(stat)+/-9(syst) MeV; it can also be fit with a P-wave Breit-Wigner resonance. Evidence for a similar enhancement is also observed in psi(')-->pK(-)Lambda;+c.c. decays. The analysis is based on samples of 5.8x10(7)J/psi and 1.4x10(7)psi(') decays accumulated in the BES II detector at the Beijing Electron-Positron Collider.
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Duan WM, Chen ZX, Wang W, Fu JX, Bai X, Zhao XJ, Yao L. [Establishment and characterization of leukemic cell line U937 stably expressing exogenous RbAp46]. ZHONGGUO SHI YAN XUE YE XUE ZA ZHI 2004; 12:416-9. [PMID: 15363122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
To establish leukemic cell lines stably transfected by RbAp46 gene, electroporation was performed after optimizing the transfection condition for suspended cells. Under conditions of low voltage and high capacitance, RbAp46 was transfected into U937 by electroporation. Individual clones selected with G418 for 3 weeks were isolated. The integration and the protein levels of the exogenous RbAp46 in transfectants were determined by PCR and Western blot analysis, respectively. The subclone expressing high level of RbAp46 was then established. Viability of transfected cells was assayed by trypan blue exclusion. Cell number was counted daily to determine the growth rate. The results showed that growth rate of U937 cell lines expressing exogenous RbAp46 was about 50% lower than that in control. It is concluded that leukemic cell lines stably expressing exogenous RbAp46 were established and overexpression of RbAp46 inhibits the growth of U937 leukemic cells.
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Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen HX, Chen J, Chen JC, Chen J, Chen ML, Chen YB, Chi SP, Chu YP, Cui XZ, Dai HL, Dai YS, Deng ZY, Dong LY, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Fu HY, Fu LP, Gao CS, Gao ML, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Han SW, Harris FA, He J, He KL, He M, He X, Heng YK, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Ji XB, Jia QY, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Lai YF, Li F, Li G, Li HH, Li J, Li JC, Li QJ, Li RB, Li RY, Li SM, Li W, Li WG, Li XL, Li XQ, Li XS, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu Y, Liu ZA, Liu ZX, Lu GR, Lu F, Lu JG, Luo CL, Luo XL, Ma FC, Ma JM, Ma LL, Ma XY, Mao ZP, Meng XC, Mo XH, Nie J, Nie ZD, Olsen SL, Peng HP, Qi ND, Qian CD, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Song LW, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tao N, Tian YR, Tong GL, Varner GS, Wang DY, Wang JZ, Wang L, Wang LS, Wang M, Wang M, Wang P, Wang PL, Wang SZ, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wu N, Wu YM, Xia XM, Xie XX, Xin B, Xu GF, Xu H, Xu Y, Xue ST, Yan ML, Yan WB, Yang F, Yang HX, Yang J, Yang SD, Yang YX, Yi LH, Yi ZY, Ye M, Ye MH, Ye YX, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JM, Zhang JY, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XM, Zhang XY, Zhang Y, Zhang YJ, Zhang YY, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JB, Zhao JW, Zhao PP, Zhao WR, Zhao XJ, Zhao YB, Zhao ZG, Zheng HQ, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu Y, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zou BS. Observation of the decay psi(2S)-->K0SK0L. PHYSICAL REVIEW LETTERS 2004; 92:052001. [PMID: 14995298 DOI: 10.1103/physrevlett.92.052001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2003] [Indexed: 05/24/2023]
Abstract
The decay psi(2S)-->K(0)(S)K(0)(L) is observed using psi(2S) data collected with the Beijing Spectrometer at the Beijing Electron-Positron Collider; the branching fraction is determined to be B(psi(2S)-->K(0)(S)K(0)(L))=(5.24+/-0.47+/-0.48)x10(-5). Compared with J/psi-->K(0)(S)K(0)(L), the psi(2S) branching fraction is enhanced relative to the prediction of the perturbative QCD "12%" rule. The result, together with the branching fractions of psi(2S) decays to other pseudoscalar meson pairs (pi(+)pi(-) and K+K-), is used to investigate the relative phase between the three-gluon and the one-photon annihilation amplitudes of psi(2S) decays.
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Wan X, Wang JL, Zhao XJ. [The influence of live ammunition manoeuvres on the levels of serum hormones (cortisol, testosterone, gastrin, and insulin)]. ZHONGGUO YING YONG SHENG LI XUE ZA ZHI = ZHONGGUO YINGYONG SHENGLIXUE ZAZHI = CHINESE JOURNAL OF APPLIED PHYSIOLOGY 2001; 17:406. [PMID: 21207716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Lu X, Wu H, Xu GW, Guan AM, Zhao XJ, Song YJ, Zhang TF, Liu B. [Development of a gas chromatographic column system for the on-line analysis of trace tetrahydrofuran in hexane]. Se Pu 2001; 19:196-9. [PMID: 12541794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
A gas chromatographic system using home-made 7 microns thick cross-linked dimethylpolysiloxane columns for the on-line analysis of trace tetrahydrofuran in hexane in a rubber production facility was developed. The experimental parameters of the column system, including the temperature, flow rate as well as the back-flushing and heart-cutting program were investigated. The total column-switching program was suggested. The system has been successfully operated for more than one year with good resolution, stability and precision (RSD < 5%) in analyzing trace tetrahydrofuran (0-250 x 10(-6), V/V) for industrial process control in the rubber production facility.
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Sampath V, Zhao XJ, Caughey WS. Anesthetic-like interactions of nitric oxide with albumin and hemeproteins. A mechanism for control of protein function. J Biol Chem 2001; 276:13635-43. [PMID: 11278308 DOI: 10.1074/jbc.m006588200] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Noncovalent bonding interactions of nitric oxide (NO) with human serum albumin (HSA), human hemoglobin A, bovine myoglobin, and bovine cytochrome c oxidase (CcO) have been explored. The anesthetic nitrous oxide (NNO) occupies multiple sites within each protein, but does not bind to heme iron. Infrared (IR) spectra of NNO molecules sequestered within albumin, with NO present, support the binding of NO and NNO to the same sites with comparable affinities. Perturbations of IR spectra of the Cys(34) thiol of HSA indicate NO, NNO, halothane, and chloroform can induce similar changes in protein structure. Experiments evaluating the relative affinities of binding of NO and carbon monoxide (CO) to iron(II) sites of the hemeproteins led to evidence of NO binding to noniron, nonsulfur sites as well. With HbA, IR spectra of cysteine thiols and/or the iron(II) N-O stretching region denote changes in protein structure due to NO, NNO, or CO occupying noniron sites with an order of decreasing affinities of NO > NNO > CO. Loss of NO from some, not all, noniron sites in hemeproteins is very slow (t(1/2) approximately hours). These findings provide examples in which NO and anesthetics alter the structure and properties of protein similarly, and support the hypothesis that some physiological effects of NO (and possibly CO) result from anesthetic-like noncovalent bonding to sites within protein or other tissue components. Such bonding may be involved in mechanisms for control of oxygen transport, mitochondrial respiration, and activation of soluble guanylate cyclase by NO.
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Zhao XJ, McKerr G, Dong Z, Higgins CA, Carson J, Yang ZQ, Hannigan BM. Expression of oestrogen and progesterone receptors by mast cells alone, but not lymphocytes, macrophages or other immune cells in human upper airways. Thorax 2001; 56:205-11. [PMID: 11182013 PMCID: PMC1758779 DOI: 10.1136/thorax.56.3.205] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Nasal polyposis often coexists with asthma in airway inflammatory conditions characterised by the infiltration of a range of immune cells. A potentially important role for ovarian hormones has been implicated in airway inflammation but the cellular target for such action is not known. METHODS Expression of oestrogen receptors (ER) and progesterone receptors (PR) was examined using immunohistochemistry in formalin fixed nasal polyp tissues from 47 subjects. The cells positive for ER or PR were confirmed by spatial location, dual immunolabelling, and histochemical staining. RESULTS Consistent with the known features of nasal polyps, CD4+ (T helper/inducer), CD8+ (cytotoxic/suppressor), CD68+ (macrophages), mast cells, eosinophils and neutrophils were all clearly detected by their relevant monoclonal antibodies or appropriate histochemical staining, but only mast cells tested positive for ER/PR labelling with their polyclonal and monoclonal antibodies. The frequencies for expression were 61.7% for ER positive and 59.6% for PR positive cells. The expression of ER/PR was independent of patient sex and age but was highly correlated with the numbers of mast cells (r = 0.973, p<0.001 for ER; r = 0.955, p<0.001 for PR). Fewer than 5% of mast cells were found to be negative for ER/PR expression. CONCLUSIONS Mast cells alone, but not lymphocytes, macrophages, or other immune cells, express ER/PR in human upper airways. Numerous ER/PR positive mast cells exist in nasal polyps, indicating that this may be a major route for the involvement of sex hormones in airway inflammation when exposed to the higher and varying concentration of oestrogen and progesterone characteristic of females.
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Xu GW, Ye F, Kong HW, Lu X, Zhao XJ. [Technique and advance of comprehensive two-dimensional gas chromatography]. Se Pu 2001; 19:132-6. [PMID: 12541655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
Many analytical problems require more resolution than the conventional single column chromatographic technique can provide. In such cases the separation power can be enhanced by using more than one separation technique or mechanism. The sample is then dispersed in different time dimensions. The resolution obtained depends strongly on the difference between these dimensions. The highest resolution is gained when there is no correlation between the separations, the dimensions being orthogonal to each other. Comprehensive two-dimensional gas chromatography (GC x GC) provides a true orthogonal separation system in which a modulator serially couples two columns containing dissimilar stationary phases. It focuses and subsequently reinjects components eluting from the first column into the second one. The system generates a peak capacity that is approximately equal to the product of the peak capacities of the two individual separation systems. In this paper, technique and instrumental considerations of GC x GC are discussed. The three designs of contemporary GC x GC systems are presented and compared. A number of typical applications on complex samples such as petroleum products and environmental pollutants are also cited. Finally, the future perspectives of GC x GC are simply discussed.
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Zhao XJ, Calderone RA, Krueger KE, Choi G, Cihlar RL. Isolation and characterization of the Candida albicans MOT2 gene. Med Mycol 2001; 39:81-6. [PMID: 11270411 DOI: 10.1080/mmy.39.1.81.86] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
A putative Candida albicans homologue of Saccharomyces cerevisiae MOT2 (modulator of transcription) has been cloned and analyzed. A cDNA fragment corresponding to a portion of S. cerevisiae MOT2 was used to isolate a similar C. albicans gene (CaMOT2). CaMOT2 is comprised of two exons of 50 bp and 1,714 bp, respectively, with a single 82 bp intron located near the 5' end of the gene. The gene encodes a protein (CaMot2p) with an estimated mass of 67 kDa. The 5' region of the gene shows sequence homology with S. cerevisiae MOT2, whereas no significant similarity was observed in the 3' region. Similarly, the N-terminal portion of C. albicans Mot2p exhibits approximately 80% homology with S. cerevisiae Mot2p, while no significant homology to any known protein was observed in the carboxy-terminal half of the C. albicans protein. The N-terminal portion of CaMot2p contains a cysteine-rich domain (amino acids 18-62). The distribution of the cysteine residues identifies CaMot2p as a zinc-finger protein. The data suggest two potential Zn-binding sites, similar to the arrangement found in S. cerevisiae. Reverse-transcriptase polymerase chain reaction was used to compare the level of CaMOT2 expression between C. albicans grown in vitro and growth during in vivo infection in the rat model of oral candidiasis. The results showed CaMOT2 is down-regulated during growth in the rat oral cavity compared to in vitro culture. Although the function of C. albicans MOT2 has not been determined, comparison to S. cerevisiae MOT2 suggests the gene product may act as a general negative regulator.
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Yang XE, Chen ZG, Long L, Zhai DS, Zhao XJ, Fang RY. [Heart morphologic state in retired fighter pilots]. HANG TIAN YI XUE YU YI XUE GONG CHENG = SPACE MEDICINE & MEDICAL ENGINEERING 2000; 13:440-3. [PMID: 11767786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Objective. To study the heart morphology in the retired fighter pilots, and to provide clinical evidence for protection combined G-loads (+ Gz), heat, noise, hypoxic and vibration stress induced cardiac structural damage. Method. Parameters of heart morphology were studied using Doppler echocardiography in 40 retired fighter pilots with 40 veteran cadres as control. Result. LVDd, LVDs, LADs, LVEDV, LVPWs and LVM in pilot group were somewhat higher than those in control group (NS); while IVSs and LVMI in pilot group were slightly lower than those in control group (NS); LVESV, aortic valve area, internal diameter of the ring and sinus in pilot group were significantly higher than those in control group (P < 0.05). Conclusion. Analysis of the results revealed no pathomorphologic damage of the heart. It suggest that all the variations can be regarded as adaptive changes due to the effects of the combined environmental factors experienced in long time flying.
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Zhao XJ, Meng Y, Liu JY, Shen J, Liu L, Liu ZH, Cai YY. [Chromosomal mapping of ld gene which causes congenital limb deformity syndrome in KM-ld mouse]. YI CHUAN XUE BAO = ACTA GENETICA SINICA 2000; 26:610-5. [PMID: 10876660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Fourteen biochemical marker loci and 61 SSLP loci in congenic strain C57BL/6.KM-ld were screened to determine the loci linkage to ld gene, an autosomal recessive mutant gene in KM mouse which causes congenital limb deformity in mouse by means of electrophoresis and PCR amplification. The result showed that ld gene linked to D2Mit30, D2Mit62 and D2Mit63. To locate ld gene more accurately on chromosome 2, 86 backcross offsprings (C57BL/6 x KM-ld) F1 x KM-ld were produced for linkage analysis. From the backcross progeny genomic DNAs were amplified for D2Mit13, D2Mit30, D2Mit62 and D2Mit63 loci in vitro. According to phenotypes, the linkage between the four SSLP loci and ld gene was analysed by calculating genetic distance, ld gene was located exactly on Chr. 2, 76cM, with distances of 25.58cM to D2Mit30, D2Mit62 and D2Mit63, of 31.39cM to D2Mit13.
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Calera JA, Zhao XJ, Calderone R. Defective hyphal development and avirulence caused by a deletion of the SSK1 response regulator gene in Candida albicans. Infect Immun 2000; 68:518-25. [PMID: 10639412 PMCID: PMC97171 DOI: 10.1128/iai.68.2.518-525.2000] [Citation(s) in RCA: 123] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
In a previous study, we reported the isolation and characterization of the two-component response regulator SSK1 gene of Candida albicans. This gene is a structural but not a functional homolog of the SSK1 and mcs4(+) genes of Saccharomyces cerevisiae and Schizosaccharomyces pombe, respectively. In the present study, we have constructed and phenotypically characterized Deltassk1 mutants of C. albicans. The results confirmed our previous observation that CaSSK1, unlike SSK1 or mcs4(+), does not regulate cellular responses to either osmotic or oxidative stress. Instead, Deltassk1 null strains showed severely reduced hyphal formation on serum agar and were totally defective in hyphal development on other solid media, such as medium 199 (pH 7.5) and Spider medium. In contrast, under conditions of low nitrogen availability on solid media, Deltassk1 null strains dramatically hyperinvaded the agar. However, while forming germ tubes and hyphae in liquid media similar to those of the wild type, Deltassk1 null strains flocculated in a manner similar to that of Deltachk1 two-component histidine kinase mutants, which we have previously described. Finally, virulence studies indicated that SSK1 is essential for the pathogenesis of C. albicans, suggesting that the Ssk1p response regulator could be a good target for antifungal therapy.
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