3301
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Wang H, Cao Y. MO-F-211-05: GPU Computation for Voxelwise Kinetic Modeling of Hepatic Perfusion. Med Phys 2011. [DOI: 10.1118/1.3613036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3302
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Wang H, Wang C, Wong P, Martel M, Chung H, Tung S. SU-E-T-456: Comparison of Dosimetric Effect of Translational Setup Errors for Total Scalp Irradiation Using Conventional Photon-Electron Combination, IMRT and VMAT Techniques. Med Phys 2011. [DOI: 10.1118/1.3612410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3303
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Lamsal BP, Wang H, Johnson LA. Effect of corn preparation methods on dry-grind ethanol production by granular starch hydrolysis and partitioning of spent beer solids. BIORESOURCE TECHNOLOGY 2011; 102:6680-6686. [PMID: 21511468 DOI: 10.1016/j.biortech.2011.03.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 03/13/2011] [Accepted: 03/14/2011] [Indexed: 05/30/2023]
Abstract
Two corn preparation methods, rollermill flaking and hammermill grinding, were compared for efficient processing of corn into ethanol by granular starch hydrolysis and simultaneous fermentation by yeast Saccharomyces cerevisiae. Corn was either ground in a hammermill with different size screens or crushed in a smooth-surfaced rollermill at different roller gap settings. The partitioning of beer solids and size distribution of solids in the thin stillage were compared. The mean particle diameter d(50) for preparations varied with set-ups and ranged between 210 and 340 μm for ground corn, and 1180-1267 μm for flaked corn. The ethanol concentrations in beer were similar (18-19% v/v) for ground and flaked preparations, however, ethanol productivity increased with reduced particle size. Roller versus hammermilling of corn reduced solids in thin stillage by 28%, and doubled the volume percent of fines (d(50) ∼ 7 μm)in thin stillage and decreased coarse (d(50) ∼ 122 μm) by half compared to hammermilling.
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3304
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Wang H, Cao Y. SU-E-J-88: Correction of Arterial Input Function Distortion for DCE MRI Assessment of Hepatic Perfusion Response to Radiation Therapy. Med Phys 2011. [DOI: 10.1118/1.3611856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3305
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Moriyama E, Cao W, Liu T, Wang H, Zheng G, Wilson B. Novel optical probes for image-guided tumor resection and photodynamic therapy based on glucose transporters. Photodiagnosis Photodyn Ther 2011. [DOI: 10.1016/j.pdpdt.2011.03.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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3306
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Zou W, Lin H, Wang H, Bui V, Tochner Z, McDonough J, Both S. SU-E-T-51: Patient Collision Detection in Proton Therapy during Treatment Planning Phase. Med Phys 2011. [DOI: 10.1118/1.3612002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3307
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Wang C, Wang H, Tung S, Chung H, Wong P, Martel M. SU-E-T-804: Total Scalp Irradiation Using Volumetric Modulated Arc Therapy and Comparison with IMRT and Conventional Photon/Electron Field Combination. Med Phys 2011. [DOI: 10.1118/1.3612768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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3308
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Wang H, Zhang J, Zhao M, Zhang X, Sun Q, Chen D. Production and health assessment of second-generation cloned Holstein cows derived by somatic cell nuclear transfer. Anim Reprod Sci 2011; 126:11-8. [DOI: 10.1016/j.anireprosci.2011.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Revised: 04/14/2011] [Accepted: 04/20/2011] [Indexed: 10/18/2022]
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3309
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Zheng Y, Liu Y, Wu Q, Hong H, Zhou H, Chen J, Wang H, Xian W, Li J, Liu Z, Pei Z, Chen L. Confirmation of LRRK2 S1647T variant as a risk factor for Parkinson's disease in southern China. Eur J Neurol 2011; 18:538-40. [PMID: 20629711 DOI: 10.1111/j.1468-1331.2010.03164.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Leucine-rich repeat kinase 2 (LRRK2) S1647T has been identified as a risk variant for Parkinson's disease (PD) in Han Chinese. METHODS To replicate the association of LRRK2 S1647T with risk of PD, we conducted a case-control study of this variant involving 406 PD subjects and 412 controls from southern mainland China. RESULTS The results showed that the frequency of A allele was higher in patients with PD (OR=1.238, 95% CI: 1.015-1.510, P=0.035) compared to controls. In a multivariate logistic regression analysis with the disease group (patients with PD vs. controls) as the dependent variable and genotype as an independent factor adjusting for the effect of age and gender, the homozygous S1647T genotype (AA) was associated with an increased risk of PD (OR=1.815, 95% CI:1.270-2.594, P=0.001). The pooled analysis of present data and the data from the previous work demonstrated that the frequency of A allele was higher in patients with PD (OR=1.2, 95% CI: 1.09-1.32, P<0.0001). CONCLUSIONS LRRK2 S1647T increases the risk of Parkinson's disease in southern China.
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3310
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Xiang T, Jia Y, Sherris D, Li S, Wang H, Lu D, Yang Q. Targeting the Akt/mTOR pathway in Brca1-deficient cancers. Oncogene 2011; 30:2443-50. [PMID: 21242970 PMCID: PMC3107712 DOI: 10.1038/onc.2010.603] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Revised: 11/23/2010] [Accepted: 11/23/2010] [Indexed: 02/07/2023]
Abstract
The breast cancer susceptibility gene 1 (Brca1) has a key role in both hereditary and sporadic mammary tumorigenesis. However, the reasons why Brca1-deficiency leads to the development of cancer are not clearly understood. Activation of Akt kinase is one of the most common molecular alterations associated with human malignancy. Increased Akt kinase activity has been reported in most breast cancers. We previously found that downregulation of Brca1 expression or mutations of the Brca1 gene activate the Akt oncogenic pathway. To further investigate the role of Brca1/Akt in tumorigenesis, we analyzed Brca1/Akt expression in human breast cancer samples and found that reduced expression of Brca1 was highly correlated with increased phosphorylation of Akt. Consistent with the clinical data, knockdown of Akt1 by short-hairpin RNA inhibited cellular proliferation of Brca1 mutant cells. Importantly, depletion of Akt1 significantly reduced tumor formation induced by Brca1-deficiency in mice. The third generation inhibitor of mammalian target of rapamycin (mTOR), Palomid 529, significantly suppressed Brca1-deficient tumor growth in mice through inhibition of both Akt and mTOR signaling. Our results indicate that activation of Akt is involved in Brca1-deficiency mediated tumorigenesis and that the mTOR pathway can be used as a novel target for treatment of Brca1-deficient cancers.
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MESH Headings
- Animals
- BRCA1 Protein/deficiency
- BRCA1 Protein/genetics
- Benzopyrans/pharmacology
- Blotting, Western
- Breast Neoplasms/genetics
- Breast Neoplasms/metabolism
- Breast Neoplasms/pathology
- Cell Line, Tumor
- Cells, Cultured
- Embryo, Mammalian/cytology
- Female
- Fibroblasts/metabolism
- Humans
- Immunohistochemistry
- Mammary Neoplasms, Experimental/drug therapy
- Mammary Neoplasms, Experimental/genetics
- Mammary Neoplasms, Experimental/pathology
- Mice
- Mice, Inbred NOD
- Mice, Knockout
- Mice, SCID
- Middle Aged
- Mutation
- Proto-Oncogene Proteins c-akt/genetics
- Proto-Oncogene Proteins c-akt/metabolism
- RNA Interference
- Signal Transduction
- TOR Serine-Threonine Kinases/genetics
- TOR Serine-Threonine Kinases/metabolism
- Tumor Burden/drug effects
- Xenograft Model Antitumor Assays
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3311
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Wang H, Smith GA, Stallones L, Xiang H. Injury-related childhood mortality in migrant households in a southern city of China. Inj Prev 2011; 16:161-5. [PMID: 20570984 DOI: 10.1136/ip.2009.023069] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Sporadic evidence from China suggests that migrant children are at higher risk of injury-related mortality than local indigenous children. METHODS Child deaths from 2004 to 2008 were provided by the Shenzhen Women and Child Health Surveillance System. Population data for children 1-4 years old were obtained from the Shenzhen Bureau of Statistics and number of live births was obtained from birth registration records. All-cause and injury-related childhood mortality rates and death causes were calculated and compared. RESULTS A total of 3774 deaths were identified. All-cause mortality rates per 10,000 dropped significantly from 66.28 (95% CI 60.50 to 72.06) in infants (<1 year old) and 7.40 (95% CI 6.16 to 8.64) in early childhood (1-4 years old) in 2004 to 40.42 (95% CI 37.31 to 43.53) and 3.97 (95% CI 3.36 to 4.58) in 2008. However, injury-related mortality rates did not change significantly from 2.36 (95% CI 1.27 to 3.45) in infants and 2.97 (95% CI 2.19 to 3.76) in early childhood in 2004 to 2.00 (95% CI 1.31 to 2.69) and 2.00 (95% CI 1.56 to 2.43) in 2008. Injury-related mortality rates were significantly higher among migrant children (p<0.05). Drowning and traffic crashes were the top two causes of early childhood injury deaths; suffocation was the leading cause of infant injury deaths. CONCLUSION Migrant children were at significantly higher risk of injury-related mortality than local indigenous children. Injury prevention in Shenzhen should target drowning and traffic safety among young children and suffocation among infants as top priorities.
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3312
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Wang L, Chen J, Yao Q, Zhang J, Wang T, Wang H, Zhou X, Huan Y, Wang J. Neoadjuvant rh-endostatin, docetaxel, and epirubicin for breast cancer: Efficacy and safety in a prospective, randomized, phase II study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.1132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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3313
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Zaghloul U, Papaioannou GJ, Wang H, Bhushan B, Coccetti F, Pons P, Plana R. Nanoscale characterization of the dielectric charging phenomenon in PECVD silicon nitride thin films with various interfacial structures based on Kelvin probe force microscopy. NANOTECHNOLOGY 2011; 22:205708. [PMID: 21444948 DOI: 10.1088/0957-4484/22/20/205708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This work presents a novel characterization methodology for the dielectric charging phenomenon in electrostatically driven MEMS devices using Kelvin probe force microscopy (KPFM). It has been used to study plasma-enhanced chemical vapor deposition (PECVD) silicon nitride thin films in view of application in electrostatic capacitive RF MEMS switches. The proposed technique takes the advantage of the atomic force microscope (AFM) tip to simulate charge injection through asperities, and then the induced surface potential is measured. The impact of bias amplitude, bias polarity, and bias duration employed during charge injection has been explored. The influence of various parameters on the charging/discharging processes has been investigated: dielectric film thickness, SiN(x) material deposition conditions, and under layers. Fourier transform infrared spectroscopy (FT-IR) and x-ray photoelectron spectroscopy (XPS) material characterization techniques have been used to determine the chemical bonds and compositions, respectively, of the SiN(x) films being investigated. The required samples for this technique consist only of thin dielectric films deposited over planar substrates, and no photolithography steps are required. Therefore, the proposed methodology provides a low cost and quite fast solution compared to other available characterization techniques of actual MEMS switches. Finally, the comparison between the KPFM results and the discharge current transients (DCT) measurements shows a quite good agreement.
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3314
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Symmans WF, Andre F, Liu MC, Delacruz J, Peintinger F, Borstnar S, Wang H, Regitnig P, Ota M, Seevaratnam S, Delaloge S, Hatzis C. Blinded validation study of genomic predictions for survival following adjuvant sequential anthracycline-docetaxel chemotherapy with or without endocrine therapy. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.1030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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3315
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Liu MC, Mego M, Nakamura S, Nole F, Pierga J, Toi M, Munzone E, Yagata H, Sandri MT, Bidard F, Wang H, Hayes DF, Cristofanilli M. Clinical validity of circulating tumor cell (CTC) enumeration in 841 subjects with metastatic breast cancer (MBC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.10592] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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3316
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Shan B, Wang H, Ren Y, Tu X, Jiang Z. Phase II study of combination paclitaxel and carboplatin in patients with advanced or recurrent endometrial cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e15580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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3317
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Tai WMD, Ooi WS, Ngeow JY, Deng N, Wang H, Tham CK, Lim HY, Choo SP, Tan P, Toh HC, Tan IB. A phase I study of dovitinib in combination with capecitabine and oxaliplatin in upfront treatment of advanced colorectal and gastric cancer with a dose expansion cohort in advanced gastric cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.tps174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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3318
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Wen H, Wu XH, LI J, Li ZT, Wang H, Zang RY, Ke GH, Sun M, Li WT, Huang X, Cai SM. Prospective randomized controlled study on multiple preoperative treatments in stage IB2 to IIA cervical cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e15508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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3319
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Lai A, Lalezari S, Chou AP, Tran A, Solis OE, Carrillo JA, Chen W, Mischel PS, Green RM, Nghiemphu PL, Liau LM, Wang H, Elashoff RM, Cloughesy TF, Yong WH. Prediction of GBM outcome using combined analysis of MGMT protein expression and promoter methylation. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.2003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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3320
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Wang F, Ding W, Wang J, Jing R, Wang X, Cong H, Wang Y, Ju S, Wang H. Identification of microRNA-target interaction in APRIL-knockdown colorectal cancer cells. Cancer Gene Ther 2011; 18:500-9. [PMID: 21597503 DOI: 10.1038/cgt.2011.19] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
MicroRNAs (miRNAs) regulate mammalian gene expression by targeting mRNAs and have key roles in several cellular processes, including differentiation, development, apoptosis and cancer pathomechanisms. Our previous studies have confirmed that a proliferation-inducing ligand (APRIL) gene is overexpressed in colorectal cancer (CRC) tumors and SW480 cells. To study the potential mechanisms of APRIL gene in the occurrence and development of the CRC, herein, we investigated whether APRIL-knockdown had the inhibitory effect on the growth of SW480 cells and had the simultaneous expression changes of miRNAs and mRNAs by microarrays. Our results suggest that siRNA-APRIL can effectively inhibit the growth of SW480 cells in vitro and in vivo and several miRNAs via specific pathways might be involved in regulating the phenotype of loss-of-function in APRIL-knockdown SW480 cells. Thus, our study highlights the possible mechanisms of miRNA-target regulating the function of APRIL gene in CRC cells, moreover, siRNA-APRIL holds great promise as a novel gene therapy approach for APRIL- positive CRC treatment.
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3321
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Chen J, Yao Q, Zhang J, Wang B, Wang T, Wang H, Lv Y, Han Z, Wang L. Lymphatic targeting chemotherapy for refractory lymph nodes in patients with breast cancer after neoadjuvant chemotherapy: Preliminary experience. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e13010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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3322
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Papoiu ADP, Wang H, Coghill RC, Chan YH, Yosipovitch G. Contagious itch in humans: a study of visual 'transmission' of itch in atopic dermatitis and healthy subjects. Br J Dermatol 2011; 164:1299-303. [PMID: 21410682 DOI: 10.1111/j.1365-2133.2011.10318.x] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Anecdotal evidence suggests that 'contagious' itch occurs in daily life when we see other people itch and scratch. This phenomenon has not previously been studied systematically, and factors which can amplify itch perception were unknown. OBJECTIVES We investigated whether exposure to visual cues of itch can induce or intensify itch in healthy subjects and patients with atopic dermatitis (AD). METHODS Participants received histamine or a saline control delivered to the forearm and were asked to watch short video clips of people scratching. Spontaneous scratching induced by visual cues was monitored and analysed. RESULTS Patients with AD reported a higher itch intensity and scratched more frequently while watching itch videos, even in the presence of mock itch stimuli. CONCLUSIONS Human susceptibility to develop itch when exposed to visual cues is confirmed; it appears to be amplified in patients with AD. These findings suggest that interpersonal social cues can dramatically alter the subjective sensory experience of itch.
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3323
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Wang H, Dávila-García MI, Yarl W, Gondré-Lewis MC. Gestational nicotine exposure regulates expression of AMPA and NMDA receptors and their signaling apparatus in developing and adult rat hippocampus. Neuroscience 2011; 188:168-81. [PMID: 21596105 DOI: 10.1016/j.neuroscience.2011.04.069] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 04/29/2011] [Accepted: 04/30/2011] [Indexed: 01/20/2023]
Abstract
Untimely activation of nicotinic acetylcholine receptors (nAChRs) by nicotine results in short- and long-term consequences on learning and behavior. In this study, the aim was to determine how prenatal nicotine exposure affects components of glutamatergic signaling in the hippocampus during postnatal development. We investigated regulation of both nAChRs and glutamate receptors for AMPA and N-methyl-D-aspartate (NMDA), from postnatal day 1 (P1) to P63 after a temporally restricted exposure to saline or nicotine for 14 days in utero. We analyzed postsynaptic density components associated with AMPA receptor (AMPAR) and NMDA receptor (NMDAR) signaling: calmodulin (CaM), CaM Kinase II alpha (CaMKIIα), and postsynaptic density-95 (PSD95), as well as presynaptically localized synaptosomal-associated protein 25 (SNAP25). At P1, there was significantly heightened expression of AMPAR subunit GluR1 but not GluR2, and of NMDAR subunits NR1, NR2a, and NR2d but not NR2b. NR2c was not detectable. CaM, CaMKIIα, and PSD95 were also significantly upregulated at P1, together with presynaptic SNAP25. This enhanced expression of glutamate receptors and signaling proteins was concomitant with elevated levels of [³H]epibatidine (³H]EB) binding in prenatal nicotine-exposed hippocampus, indicating that α4β2 nAChR may influence glutamatergic function in the hippocampus at P1. By P14, neither [³H]EB binding nor the expression levels of subunits GluR1, GluR2, NR1, NR2a, NR2b, NR2c, or NR2d seemed changed with prenatal nicotine. However, CaMKIIα was significantly upregulated with nicotine treatment while CaM showed downregulation at P14. The effects of nicotine persisted in P63 young adult brains which exhibited significantly downregulated GluR2, NR1, and NR2c expression levels in hippocampal homogenates and a considerably muted overall distribution of [³H]AMPA binding in areas CA1, CA2 and CA3, and the dentate gyrus. Our results suggest that prenatal nicotine exposure can regulate the glutamatergic signaling system throughout postnatal development by enhancing or inhibiting availability of AMPAR and NMDAR or their signaling components. The persistent depression, in adults, of the requisite NR1 subunit for NMDAR assembly, and of GluR2, important for assembly, trafficking, and biophysical properties of AMPAR, indicates that nicotine may alter ionotropic glutamate receptor stoichiometry and functional properties in adults after prenatally restricted nicotine exposure.
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3324
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Imamura Y, Wang H, Matsumoto N, Muroya T, Shimazaki J, Ogura H, Shimazu T. Interleukin-1β causes long-term potentiation deficiency in a mouse model of septic encephalopathy. Neuroscience 2011; 187:63-9. [PMID: 21571042 DOI: 10.1016/j.neuroscience.2011.04.063] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Revised: 04/27/2011] [Accepted: 04/28/2011] [Indexed: 01/18/2023]
Abstract
Sepsis induces multiple organ dysfunction syndrome including septic encephalopathy (SE), which results in cognitive impairment. However, an effective treatment for SE remains unknown. We determined the role of interleukin-1β (IL-1β) in long-term potentiation (LTP) deficiency after SE. At first, endotoxin level in the blood was increased at 24 h after cecum ligation and puncture (CLP) (i.e. SE model). Second, the expression of IL-1β and its receptor in the hippocampus was determined by immunohistochemistry and immunoblotting. The number of Iba1-positive cells and their expression of IL-1β were enhanced by CLP with disruption of the blood brain barrier. Also, Iba1, IL-1β, and occludin protein expressions were consistent with immunohistochemical results. Third, we used an electrophysiological technique and observed the LTP deficiency, a hallmark of learning and memory, in the slices of hippocampus after CLP. Since type 1 interleukin-1 receptors (IL-1R1s) on neuronal cells were increased in the hippocampus, we utilized IL-1R1 antagonist. Pre-incubation with IL-1R1 antagonist for 30 min before recording of field excitatory post-synaptic potentials (fEPSPs) in the hippocampus canceled LTP deficiency after CLP. These results suggest the novel importance of IL-1β in synaptic plasticity deficiency associated with sepsis-induced brain inflammation. In a mouse model of SE, IL-1R1 inhibition is important in protecting synaptic function of the hippocampus after induction of SE.
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3325
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Wang X, Wang H, He B, Hui Y, Lv G, Li L, Wen H. Virological and molecular characterization of Kaposi’s sarcoma-associated herpesvirus strains from Xinjiang, China. Eur J Clin Microbiol Infect Dis 2011; 31:53-9. [DOI: 10.1007/s10096-011-1274-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2011] [Accepted: 04/12/2011] [Indexed: 10/18/2022]
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