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Chen L, Xiao J, Li Y, Ma H. Ang-(1-7) might prevent the development of monocrotaline induced pulmonary arterial hypertension in rats. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2011; 15:1-7. [PMID: 21381494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
OBJECTIVES To investigate whether Angiotensin-(1-7) [Ang-(1-7)] could prevent the development of monocrotaline (MCT) induced pulmonary arterial hypertension and vascular remodeling. MATERIALS AND METHODS 30 Sprgue-Dawely rats were randomly assigned into three groups: control group, pulmonary arterial hypertension (PAH) group and PAH +Ang-(1-7) group. Rats in PAH group and PAH +Ang-(1-7) group received 60 mg/kg monocrotaline (MCT) injection subcutaneously and after 24 hours received either saline or 24 microg/kg/h of Ang-(1-7) injection via osmotic minipumps for 4 weeks. Those rats in control group were firstly injected saline subcutaneously and then received saline injection via osmotic minipumps. RESULTS After four weeks, in PAH group, right ventricular systolic pressure (RVSP), right ventricular hypertrophy index (RVHI), percentage of wall thickness (WT%) and percentage of wall area (WA%) were significantly increased, and the level of endothelial nitric oxide synthase (eNOS) protein, eNOS ser 1177-phosphorylati, Akt-phosphorylation were significantly decreased compared with control group. However, RVSP, RVHI, WT%, WA% were dramatically decreased in PAH+Ang-(1-7) group and the level of eNOS protein, eNOS ser 1177-phosphorylation, Akt-phosphorylation were significantly increased compared with PAH group. CONCLUSION Those results suggest that Ang-(1-7) could prevent the development of monocrotaline induced pulmonary arterial hypertension and vascular remodeling, which appears to be associated with up-regulation of eNOS activation via Akt pathway.
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4602
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Yu ZS, Li Y, Wang YR. Polystyrene grafted onto high-cis-1,4 polybutadiene backbone via 'living' radical polymerization with 2,2,6,6-tetramethylpiperidinyl-1-oxy (TEMPO) radical. EXPRESS POLYM LETT 2011. [DOI: 10.3144/expresspolymlett.2011.89] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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4603
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Yan YX, Sun Y, Chen JC, Su J, Li Y, Qiu MH. A New Triterpenoid Alkaloid from Buxus sempervirens. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2011. [DOI: 10.5560/znb.2011.66b1076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4604
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Li Y, Wang YL, Ni ZY, Dong M, Cong B, Sauriol F, Zhang ML, Wang YF, Huo CH, Gu YC, Shi QW, Kiyota H. A Novel Taxatetraene Framework Formed From a New Natural Taxane from Taxus cuspidata. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2011. [DOI: 10.5560/znb.2011.66b0759] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4605
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Zhang LY, Dong X, Liu ZL, Mo JZ, Fang JY, Xiao SD, Li Y, Chen SL. Luminal serotonin time-dependently modulates vagal afferent driven antinociception in response to colorectal distention in rats. Neurogastroenterol Motil 2011; 23:62-9, e6. [PMID: 20723070 DOI: 10.1111/j.1365-2982.2010.01589.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Compelling evidence shows that vagal afferents mediate antinociception in response to visceral insults. Our recent findings implied that luminal serotonin (5-hydroxytryptamine, 5-HT) might mediate chronic food allergen sensitized visceral hyperalgesia, in which vagal afferents might be implicated. Here, to test this hypothesis, we investigated the effects of luminal infused 5-HT on visceral nociception and the involvement of vagal antinociceptive pathway. METHODS The vagus-intact or vagotomized rats were given acute intraluminally or intraperitoneally administered 5-HT, or chronic luminal infusion of 5-HT. The visceromotor response (VMR) to colorectal distension (CRD) was electrophysiologically recorded. KEY RESULTS Acute intraluminal infusion of 5-HT (10 or 100 nmol) significantly attenuated VMR to CRD, while systemic administered 5-HT at similar doses resulted in markedly augmented nociception. Pretreatment with luminal application of granisetron or lidocaine, or pharmacological depletion of endogenous 5-HT with injection of p-chlorophenylalanine, a 5-HT synthesis inhibitor, and subdiaphragmatic vagotomy or functional deafferentation with capsaicin abolished the effect of luminal (but not systemic) 5-HT. Chronic infusion of 5-HT (10 nmol d(-1) for 5 days) produced gradual augmentation of baseline VMR. And, the VMR to CRD after 5-HT infusion decreased on day 1 and 2, then gradually increased from day 3. Surgical vagotomy or daily preperfusion with granisetron canceled these time-dependent patterns. CONCLUSIONS & INFERENCES Luminal 5-HT time-dependently modulates vagal afferent driven antinociception. Acute infusion of 5-HT attenuates visceral nociception via activation of vagal afferent 5-HT type 3 receptors (5-HT(3)Rs)within intestinal mucosa; while chronic luminal 5-HT caused gradually developed visceral hyperalgesia, which may also involve vagal 5-HT(3)Rs.
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4606
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Ma D, Li Y, Dong J, An S, Wang Y, Liu C, Yang X, Yang H, Xu X, Lin D, Lai R. Purification and characterization of two new allergens from the salivary glands of the horsefly, Tabanus yao. Allergy 2011; 66:101-9. [PMID: 20608917 DOI: 10.1111/j.1398-9995.2010.02435.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Horsefly bite can cause allergic reactions in humans. There is no information about allergenic horsefly proteins. OBJECTIVES The current work aims to purify and characterize IgE-binding proteins from horsefly salivary glands. METHODS Two IgE-binding proteins, Tab a 1 and Tab a 2 with molecular weight of 26 and 35 kd, respectively, were purified and characterized from 60,000 pairs of horsefly salivary glands of Tabanus yao, respectively. Their primary sequences were determined by Edman degradation and cDNA cloning. Their allergenicity was examined using enzyme-linked immunosorbent assay (ELISA), ELISA inhibition tests, and immunoblots. RESULTS Immunoblotting demonstrated IgE binding by 32 and 34 of 37 (86.5% and 91.8%) subjects' sera to Tab a 1 and Tab a 2, respectively. They were identified as an antigen 5-related (Ag 5) protein and hyaluronidase, respectively. ELISA inhibitions of serum IgE reactivity to the horsefly salivary gland extract (SGE) using purified Tab a 1 and Tab a 2 were significant (about 45%). In addition, these proteins showed some IgE-binding capacity to sera of subjects with wasp sting allergy. CONCLUSIONS We have first identified and characterized two IgE-binding proteins, Tab a 1, an Ag 5-like protein and Tab a 2, a hyaluronidase, from the horsefly salivary glands. They appear to be of importance for the allergic reactions induced by horsefly bite. These allergens are thus not only found in stinging but also found in hematophagous insects. These results also provided support for the presence of the so-called wasp-horsefly syndrome (WHS).
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4607
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Li Y, Huang T, Tang H, Yamamura K, Pu X. Gene expression profiling: identification of genes with altered expression in Ayu17-449 knockout mice. GENETICS AND MOLECULAR RESEARCH 2011; 10:1533-44. [DOI: 10.4238/vol10-3gmr1158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4608
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Li L, Wen J, Wang L, Li YP, Li Y. Is routine indwelling catheterisation of the bladder for caesarean section necessary? A systematic review. BJOG 2010; 118:400-9. [DOI: 10.1111/j.1471-0528.2010.02802.x] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4609
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Zhang L, Yang N, Wang S, Huang B, Li F, Tan H, Liang Y, Chen M, Li Y, Yu X. Adenosine 2A receptor is protective against renal injury in MRL/lpr mice. Lupus 2010; 20:667-77. [PMID: 21183557 DOI: 10.1177/0961203310393262] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVE Adenosine is considered as a potent endogenous anti-inflammatory and immunosuppressive molecule. We examined the roles of A2A-adenosine receptor (A(2A)R) in the progression of lupus nephritis. METHODS MRL/lpr mice were given a selective A(2A)R agonist, CGS21680 (0.4 mg/kg per day, i.p.) while control mice received saline only. After 8 weeks of treatment, mice were sacrificed for assessment of functional and histological parameters as well as inflammatory infiltration in the kidneys. MCP-1, IFN-γ, MHC-II and A(2A)R mRNA expression was evaluated by RT-PCR. Expression of A(2A)R and nuclear NFκB p65 protein was determined by Western blot analysis. Levels of anti-dsDNA antibody and IFN-γ were measured by ELISA. RESULTS CGS21680 treatment resulted in significant decrease in proteinuria, blood urea and creatinine as well as improvement in renal histology. Renal macrophage and T-cell infiltration were significantly attenuated in association with suppressed expression of MCP-1, IFN-γ and MHC-II. CGS21680 treatment reduced the level of serum anti-dsDNA and renal immune complex deposition. CGS21680 inhibited the activation of NFκB and suppressed the expression of IFN-γ, MCP-1 and MHC-II in MRL/lpr splenocytes. CONCLUSIONS A(2A)R activation suppressed inflammation in the kidneys of MRL/lpr mice and can be considered as a novel therapeutic approach for human lupus nephritis.
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4610
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Szelei J, Woodring J, Goettel MS, Duke G, Jousset FX, Liu KY, Zadori Z, Li Y, Styer E, Boucias DG, Kleespies RG, Bergoin M, Tijssen P. Susceptibility of North-American and European crickets to Acheta domesticus densovirus (AdDNV) and associated epizootics. J Invertebr Pathol 2010; 106:394-9. [PMID: 21167171 DOI: 10.1016/j.jip.2010.12.009] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Revised: 12/07/2010] [Accepted: 12/09/2010] [Indexed: 10/18/2022]
Abstract
The European house cricket, Acheta domesticus L., is highly susceptible to A. domesticus densovirus (AdDNV). Commercial rearings of crickets in Europe are frequently decimated by this pathogen. Mortality was predominant in the last larval stage and young adults. Infected A. domesticus were smaller, less active, did not jump as high, and the adult females seldom lived more than 10-14 days. The most obvious pathological change was the completely empty digestive caecae. Infected tissues included adipose tissue, midgut, epidermis, and Malpighian tubules. Sudden AdDNV epizootics have decimated commercial mass rearings in widely separated parts of North America since the autumn of 2009. Facilities that are producing disease-free crickets have avoided the importation of crickets and other non-cricket species (or nonliving material). Five isolates from different areas in North America contained identical sequences as did AdDNV present in non-cricket species collected from these facilities. The North American AdDNVs differed slightly from sequences of European AdDNV isolates obtained in 1977, 2004, 2006, 2007 and 2009 and an American isolate from 1988. The substitution rate of the 1977 AdDNV 5kb genome was about two nucleotides per year, about half of the substitutions being synonymous. The American and European AdDNV strains are estimated to have diverged in 2006. The lepidopterans Spodoptera littoralis and Galleria mellonella could not be infected with AdDNV. The Jamaican cricket, Gryllus assimilis, and the European field cricket, Gryllus bimaculatus, were also found to be resistant to AdDNV.
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Martínez-Mier EA, Cury JA, Heilman JR, Katz BP, Levy SM, Li Y, Maguire A, Margineda J, O'Mullane D, Phantumvanit P, Soto-Rojas AE, Stookey GK, Villa A, Wefel JS, Whelton H, Whitford GM, Zero DT, Zhang W, Zohouri V. Development of gold standard ion-selective electrode-based methods for fluoride analysis. Caries Res 2010; 45:3-12. [PMID: 21160184 PMCID: PMC3696354 DOI: 10.1159/000321657] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2008] [Accepted: 10/04/2010] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Currently available techniques for fluoride analysis are not standardized. Therefore, this study was designed to develop standardized methods for analyzing fluoride in biological and nonbiological samples used for dental research. METHODS A group of nine laboratories analyzed a set of standardized samples for fluoride concentration using their own methods. The group then reviewed existing analytical techniques for fluoride analysis, identified inconsistencies in the use of these techniques and conducted testing to resolve differences. Based on the results of the testing undertaken to define the best approaches for the analysis, the group developed recommendations for direct and microdiffusion methods using the fluoride ion-selective electrode. RESULTS Initial results demonstrated that there was no consensus regarding the choice of analytical techniques for different types of samples. Although for several types of samples, the results of the fluoride analyses were similar among some laboratories, greater differences were observed for saliva, food and beverage samples. In spite of these initial differences, precise and true values of fluoride concentration, as well as smaller differences between laboratories, were obtained once the standardized methodologies were used. Intraclass correlation coefficients ranged from 0.90 to 0.93, for the analysis of a certified reference material, using the standardized methodologies. CONCLUSION The results of this study demonstrate that the development and use of standardized protocols for F analysis significantly decreased differences among laboratories and resulted in more precise and true values.
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Shi L, Lei D, Ma C, Xu F, Li Y, Wang Y, Cong N, Liu D, Pan XL. Clinicopathological implications of tumour-associated macrophages and vascularization in sinonasal melanoma. J Int Med Res 2010; 38:1276-86. [PMID: 20926000 DOI: 10.1177/147323001003800409] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
This study investigated tumour-associated macrophages (TAMs) and their effects on tumour vascularization in sinonasal melanoma (SNM). Data on 45 patients with SNM undergoing surgery were reviewed retrospectively. Tumour sections were analysed immunohistochemically for TAMs, microvessels, lymph vessels, and vasculogenic mimicry in both intra- and peritumoural areas. The density of intratumoural TAMs was associated with tumour thickness and with overall survival in SNM stages I and II but there were no correlations between micro- or lymph vessel density and TAM infiltration. Greater TAM infiltration was observed in tumour tissues with vasculogenic mimicry although this was not statistically significant. These data suggest that high intratumoural TAM infiltration is associated with tumour aggressiveness and a poor prognosis for SNM, and that activation of macrophages can be polarized by different micro-environments. TAMs could be potential prognostic indicators for patients with SNM.
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Zhang Q, Li Y, Gao N, Huang Y, Li LJ. Synchronous multicentric osteosarcoma involving mandible and maxillas. Int J Oral Maxillofac Surg 2010; 40:446-9. [PMID: 21144710 DOI: 10.1016/j.ijom.2010.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2010] [Revised: 09/11/2010] [Accepted: 11/05/2010] [Indexed: 10/18/2022]
Abstract
Synchronous multicentric osteosarcoma (SMO) is rare with fewer than 100 well-documented cases in the medical literature. SMO affecting the jaw is even rarer with only three cases involving the mandible having been reported. SMO in the maxilla has not been previously reported. The authors report the first case of SMO involving both mandible and maxilla in an 18-year-old girl. The clinical course, radiological and histological appearance of the lesion indicated it was an SMO rather than metastasis arising from a single osteosarcoma. This case could be regarded as powerful evidence to support the multicentric theory related to SMO.
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Liu L, Jiang C, Li Y, He H, Wu Z. Treatment of a fusiform vertebral aneurysm with double stent placement. A technical case report and review of the literature. Neuroradiol J 2010; 23:737-42. [PMID: 24148731 DOI: 10.1177/197140091002300616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2010] [Accepted: 05/29/2010] [Indexed: 11/15/2022] Open
Abstract
A 34-year-old man admitted to another hospital presented with sudden onset of headache. The CT scan was unremarkable, but magnetic resonance angiography revealed a fusiform aneurysm in the left vertebral artery. Six days later, the patient was sent to our institution for further diagnosis and treatment. Cerebral angiography confirmed a fusiform aneurysm located in the right vertebral artery. At first, we placed a neuroform-3 stent and could see contrast medium stasis in the aneurysm, so we did not fill coils into the aneurysm. Four months later, the patient was admitted for rechecking. DSA showed the aneurysm remained and we placed a LEO stent in the lumen of the Neuroform stent. A control DSA eight months later showed the aneurysm had almost healed. Overlapping stents may induce spontaneous thrombosis of vertebral artery aneurysms and facilitate parent artery reconstruction through flow remodeling and stent endothelialization. This technique may be an option in treating dissecting or fusiform intracranial aneurysms that are not amenable to open surgical treatment or endovascular coil embolization.
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Liu L, Li Y, Yang X, He H, Wu Z. Successful Management of Hemorrhagic Complications during Onyx-18 Embolization of Cerebral Arteriovenous Malformations. Neuroradiol J 2010; 23:743-51. [PMID: 24148732 DOI: 10.1177/197140091002300617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Accepted: 05/29/2010] [Indexed: 11/16/2022] Open
Abstract
The most frequent and devastating complication of the endovascular treatment of cerebral AVMs is hemorrhage. This report describes three patients with cerebral AVM who encountered bleeding during Onyx-18 embolization. The bleeding was discovered promptly during the procedure and hemorrhage quickly prevented using Onyx-18. All three patients recovered without any new neurological symptoms. Early detection and prevention of bleeding are very important during interventional procedures to avoid craniotomy and improve the prognosis of patients.
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Yang LW, Zhang YY, Li JJ, Li Y, Zhong JX, Chu PK. Magnetic and upconverted luminescent properties of multifunctional lanthanide doped cubic KGdF4 nanocrystals. NANOSCALE 2010; 2:2805-2810. [PMID: 20877853 DOI: 10.1039/c0nr00326c] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Lanthanide (Ln3+) doped KGdF4 (Ln=Yb3+, Er3+, Ho3+, Tm3+) nanocrystals with a mean diameter of approximately 12 nm were synthesized by a hydrothermal method using oleic acid as a stabilizing agent at 180 °C. The nanocrystals crystallize in the cubic phase as α-NaGdF4. When excited by a 980 nm laser, these Ln3+ doped nanocrystals exhibit multicolor up-conversion (UC) emissions in red, yellow, blue and white. The calculated color coordinates demonstrate that white UC emission (CIE-X=0.352, CIE-Y=0.347) can be obtained by varying the dopant concentrations in the Yb3+/Ho3+/Tm3+ triply-doped nanocrystals to yield different RGB emission intensities. The measured field dependence of magnetization (M-H curves) of the KGdF4 nanocrystals shows their paramagnetic characteristics that can be ascribed to the non-interacting localized nature of the magnetic moment of Gd3+ ions. Moreover, low temperature thermal treatment can enhance UC properties, magnetization and magnetic mass susceptibility of Ln3+ doped KGdF4 nanocrystals. The multifunctional Ln3+ doped KGdF4 nanocrystals have potential applications in color displays, bioseparation, and optical-magnetic dual modal nanoprobes in biomedical imaging.
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Wiklund E, Kemp R, leRoux G, Li Y, Wu G. Spray chilling of deer carcasses—Effects on carcass weight, meat moisture content, purge and microbiological quality. Meat Sci 2010; 86:926-30. [DOI: 10.1016/j.meatsci.2010.07.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2010] [Revised: 07/01/2010] [Accepted: 07/19/2010] [Indexed: 11/28/2022]
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Li Y, Liang FR, Zheng H, Witt C, Roll S, Yu SG, Yan J, Sun G, Huang WJ, Chang XR, Zhao L, Zhang HX, Wang DJ, Lan L, Zou R. Acupuncture to treat migraine: A multi-center randomized controlled trial. Eur J Integr Med 2010. [DOI: 10.1016/j.eujim.2010.09.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Whitsel BL, Favorov OV, Li Y, Lee J, Quibrera PM, Tommerdahl M. Nociceptive afferent activity alters the SI RA neuron response to mechanical skin stimulation. Cereb Cortex 2010; 20:2900-15. [PMID: 20308203 PMCID: PMC2978241 DOI: 10.1093/cercor/bhq039] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Procedures that reliably evoke cutaneous pain in humans (i.e., 5-7 s skin contact with a 47-51 °C probe, intradermal algogen injection) are shown to decrease the mean spike firing rate (MFR) and degree to which the rapidly adapting (RA) neurons in areas 3b/1 of squirrel monkey primary somatosensory cortex (SI) entrain to a 25-Hz stimulus to the receptive field center (RF(center)) when stimulus amplitude is "near-threshold" (i.e., 10-50 μm). In contrast, RA neuron MFR and entrainment are either unaffected or enhanced by 47-51 °C contact or intradermal algogen injection when the amplitude of 25-Hz stimulation is 100-200 μm (suprathreshold). The results are attributed to an "activity dependence" of γ-aminobutyric acid (GABA) action on the GABA(A) receptors of RA neurons. The nociceptive afferent drive triggered by skin contact with a 47-51 °C probe or intradermal algogen is proposed to activate nociresponsive neurons in area 3a which, via corticocortical connections, leads to the release of GABA in areas 3b/1. It is hypothesized that GABA is hyperpolarizing/inhibitory and suppresses stimulus-evoked RA neuron MFR and entrainment whenever RA neuron activity is low (as when the RF(center) stimulus is weak/near-threshold) but is depolarizing/excitatory and augments MFR and entrainment when RA neuron activity is high (when the stimulus is strong/suprathreshold).
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Li Y, Kramer M, Beulens A, van der Vorst J. A framework for early warning and proactive control systems in food supply chain networks. COMPUT IND 2010. [DOI: 10.1016/j.compind.2010.07.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Li Y, Luo JY, Cui HF, Zheng L, Du SS. Study on anti-metastasis of heparin derivatives as ligand antagonist of p-selectin. Biomed Pharmacother 2010; 64:654-8. [DOI: 10.1016/j.biopha.2010.06.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2010] [Accepted: 06/19/2010] [Indexed: 01/03/2023] Open
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Zhang J, Lv M, Lv X, Jiang C, Li Y, Wu Z. Endovascular treatment for cerebral aneurysms using stents. Neuroradiol J 2010; 23:730-6. [PMID: 24148730 DOI: 10.1177/197140091002300615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Accepted: 11/07/2010] [Indexed: 02/05/2023] Open
Abstract
Endovascular stent placement combined with coil embolization is an established procedure for the treatment of intracranial aneurysms. We describe lesion outcome using stents for the treatment of intracranial aneurysms. Sixty-nine patients (30 females and 39 males; age range 12-78 years) treated with stent placement at Beijing Tiantan Hospital over a six-year period. Seventy- six cerebral aneurysms were encountered and 74 lesions were treated with 79 stents. Outcome was evaluated using the Glasgow Outcome Scale (GOS) score during a mean follow-up period of 32 months. Of the 74 stented aneurysms, 34 (45.9%) were located in the anterior circulation and 40 (54.1%) in the posterior circulation. Forty-eight (64.9%) aneurysms were small and 26 (35.1%) were large or giant. In 67 (90.5%) aneurysms embolization was completed by packing the aneurysm sac with platinum coils. In five small fusiform and four saccular aneurysms, the stent was used alone. Six procedure-related complications were observed and a cause of death in 7.2% of the patients. Follow-up angiography obtained at three months to one year in 68 (91.9%) aneurysms demonstrated complete occlusion in 43 aneurysms with a progressive thrombosis rate of 19.4% (six out of 31 aneurysms). Aneurysm recurrence occurred in four (5.8%) patients, three were treated with coil embolization and one with placement of another stent. Overall long-term outcome was good (GOS Score 4 or 5) in 92.8%, and fatal (GOS Score 1) in 7.2% of the patients. Intracranial stents can be a useful addition to coil embolization for complex broad-based aneurysms. Favorable overall long-term outcome can be achieved in 92.8% of patients when using endovascular stent placement techniques.
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Shen XG, Wang C, Li Y, Wang L, Zhou B, Xu B, Jiang X, Zhou ZG, Sun XF. Downregulation of caspase-9 is a frequent event in patients with stage II colorectal cancer and correlates with poor clinical outcome. Colorectal Dis 2010; 12:1213-8. [PMID: 19604285 DOI: 10.1111/j.1463-1318.2009.02009.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To evaluate the clinical significance of caspase-9 mRNA expression and investigate its prognostic value in stage II colorectal cancer. METHOD Quantitative real-time RT-PCR was used to analyse caspase-9 mRNA expression in cancer tissue and corresponding normal mucosa from 120 patients. RESULTS Compared with normal mucosa, the expression of caspase-9 mRNA was found to be downregulated in cancer tissue (P = 0.001). Poorly differentiated cancer showed lower mRNA expression than cancer with greater differentiation (P = 0.031). The Kaplan-Meier survival analysis demonstrated that patients with downregulated caspase-9 showed a worse overall survival (P = 0.012) and disease-free survival (P = 0.022). Cox's proportional hazards regression model confirmed that expression of caspase-9 was the strongest prognostic factor in stage II colorectal cancer. CONCLUSION The mRNA expression of caspase-9 can be used as an independent prognostic factor for patients with stage II colorectal cancer.
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Rong X, Li Y, Ebihara K, Zhao M, Kusakabe T, Tomita T, Murray M, Nakao K. Irbesartan treatment up-regulates hepatic expression of PPARalpha and its target genes in obese Koletsky (fa(k)/fa(k)) rats: a link to amelioration of hypertriglyceridaemia. Br J Pharmacol 2010; 160:1796-807. [PMID: 20649581 DOI: 10.1111/j.1476-5381.2010.00835.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND AND PURPOSE Hypertriglyceridaemia is associated with an increased risk of cardiovascular disease. Irbesartan, a well-established angiotensin II type 1 receptor (AT(1)) blocker, improves hypertriglyceridaemia in rodents and humans but the underlying mechanism of action is unclear. EXPERIMENTAL APPROACH Male obese Koletsky (fa(k)/fa(k)) rats, which exhibit spontaneous hypertension and metabolic abnormalities, received irbesartan (40 mg x kg(-1) x day(-1)) or vehicle by oral gavage over 7 weeks. Adipocyte-derived hormones in plasma were measured by ELISA. Gene expression in liver and other tissues was assessed by real-time PCR and Western immunoblotting. KEY RESULTS In Koletsky (fa(k)/fa(k)) rats irbesartan lowered plasma concentrations of triglycerides and non-esterified fatty acids, and decreased plasma insulin concentrations and the homeostasis model assessment of insulin resistance index. However, this treatment did not affect food intake, body weight, epididymal white adipose tissue weight, adipocyte size and plasma leptin concentrations, although plasma adiponectin was decreased. Irbesartan up-regulated hepatic expression of mRNAs corresponding to peroxisome proliferator-activated receptor (PPAR)alpha and its target genes (carnitine palmitoyltransferase-1a, acyl-CoA oxidase and fatty acid translocase/CD36) that mediate hepatic fatty acid uptake and oxidation; the increase in hepatic PPARalpha expression was confirmed at the protein level. In contrast, irbesartan did not affect expression of adipose PPARgamma and its downstream genes or hepatic genes that mediate fatty acid synthesis. CONCLUSIONS AND IMPLICATIONS These findings demonstrate that irbesartan treatment up-regulates PPARalpha and several target genes in liver of obese spontaneously hypertensive Koletsky (fa(k)/fa(k)) rats and offers a novel insight into the lipid-lowering mechanism of irbesartan.
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Ping X, Li Y, Li J. Antigen sampling on the Peyer's patches in a murine small bowel transplantation model. Transplant Proc 2010; 42:3803-8. [PMID: 21094860 DOI: 10.1016/j.transproceed.2010.08.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Revised: 07/10/2010] [Accepted: 08/20/2010] [Indexed: 10/18/2022]
Abstract
AIM This study investigated changes in the mucosal barrier of transplanted intestines with particular emphasis on antigen sampling by Peyer's patches (PPs). METHODS Heterotopic small bowel transplantation (SBTx) was performed as described previously. C57BL/6 mice were used as donors and BALB/c (allogeneic) or C57BL/6 mice (syngeneic) as recipients. Tacrolimus (FK506) or saline control was administered to the recipients for 2 weeks. Four groups included in this study were: syngeneic with or without immunosuppression (SYN and SYN + FK506, respectively) and allogeneic with or without immunosuppression (ALLO and ALLO + FK506, respectively). Animals were sacrificed weekly after SBTx to evaluate microfold (M) cells within PPs and for routine histology. By the third postoperative week, recipients were subjected to an intestine loop model to examine the uptake of microbeads by M cells as well as expression of Toll-like receptor 2 (TLR2) protein in the PPs with or without a TLR2 agonist challenge. We also measured occludin expression on follicle-associated epithelium (FAE) of PPs in the grafts. RESULTS Transportation of microbeads through the PPs of the grafts increased in the ALLO + FK506 group compared with that in the SYN or SYN + FK506 group. This finding was accompanied by increased expression of TLR2 in the PPs and a gradually increased number of M cells following SBTx. However, occludin expression patterns on the FAE of the PPs in the grafts were similar among SYN, SYN + FK506, and ALLO + FK506 groups. Nevertheless, as transportation of microbeads and TLR2 expression in the PPs of the grafts was enhanced once exposed to Pam3Cys-SKKKK, similar results were not seen in the ALLO + FK506 group. CONCLUSIONS Our study revealed that the mucosal barrier of intestinal grafts is altered under alloreactivity as evidenced by enhanced antigen sampling. Such a change may provide a pathway for translocation of microorganisms in the lumen.
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