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Feng D, Wang Y, Liu Y, Wu L, Li X, Chen Y, Chen Y, Chen Y, Xu C, Yang K, Zhou T. DC-SIGN reacts with TLR-4 and regulates inflammatory cytokine expression via NF-κB activation in renal tubular epithelial cells during acute renal injury. Clin Exp Immunol 2017; 191:107-115. [PMID: 28898406 DOI: 10.1111/cei.13048] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2017] [Indexed: 12/23/2022] Open
Abstract
In the pathological process of acute kidney injury (AKI), innate immune receptors are essential in inflammatory response modulation; however, the precise molecular mechanisms are still unclear. Our study sought to demonstrate the inflammatory response mechanisms in renal tubular epithelial cells via Toll-like receptor-4 (TLR-4) and dendritic cell-specific intercellular adhesion molecule 3-grabbing non-integrin 1 (DC-SIGN) signalling. We found that DC-SIGN exhibited strong expression in renal tubular epithelial cells of human acute renal injury tissues. DC-SIGN protein expression was increased significantly when renal tubular epithelial cells were exposed to lipopolysaccharide (LPS) for a short period. Furthermore, DC-SIGN was involved in the activation of p65 by TLR-4, which excluded p38 and c-Jun N-terminal kinases (JNK). Interleukin (IL)-6 and tumour necrosis factor (TNF)-α expression was decreased after DC-SIGN knock-down, and LPS induced endogenous interactions and plasma membrane co-expression between TLR-4 and DC-SIGN. These results show that DC-SIGN and TLR-4 interactions regulate inflammatory responses in renal tubular epithelial cells and participate in AKI pathogenesis.
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Powles T, Gschwend J, Loriot Y, Bellmunt J, Geczi L, Vulsteke C, Abdelsalam M, Gafanov R, Bae W, Revesz J, Yamamoto Y, Anido U, Su WP, Fleming M, Markus M, Feng D, Poehlein C, Alva A. Pembrolizumab ± chemotherapy versus chemotherapy in advanced urothelial cancer: Phase 3 KEYNOTE-361 trial. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx371.073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Stujanna E, Murakoshi N, Tajiri K, Qin R, Feng D, Yonebayashi S, Ogura Y, Kimura T, Xu D, Aonuma K. P5381Rev-erb receptor agonist improves cardiac function through modulating inflammatory processes in myocardial infarction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tao T, Yang X, Zheng J, Feng D, Qin Q, Shi X, Wang Q, Zhao C, Peng Z, Liu H, Jiang WG, He J. PDZK1 inhibits the development and progression of renal cell carcinoma by suppression of SHP-1 phosphorylation. Oncogene 2017; 36:6119-6131. [PMID: 28692056 DOI: 10.1038/onc.2017.199] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 04/09/2017] [Accepted: 05/20/2017] [Indexed: 12/14/2022]
Abstract
Renal cell carcinoma (RCC) is one of the most aggressive urologic cancers, however, the mechanism on supporting RCC carcinogenesis is still not clear. By using gene expression profile analysis and functional clustering, PDZ domain-containing 1 (PDZK1) was revealed to be downregulated in human clear cell renal cell carcinoma (ccRCC) samples, which was also verified in several independent public ccRCC data sets. Using PDZK1 overexpression and knockdown models in ccRCC cell lines, we demonstrated that PDZK1 inhibited cell proliferation, cell cycle G1/S phase transition, cell migration and invasion, indicating a tumor-suppressor role in the development and progression of ccRCC. Our study further demonstrated that PDZK1 inhibited cell proliferation and migration of ccRCC via targeting SHP-1. PDZK1 was further identified to suppress cell proliferation by blocking SHP-1 phosphorylation at Tyr536 via inhibition of the association between SHP-1 and PLCβ3, and then retarding Akt phosphorylation and promoting STAT5 phosphorylation in ccRCC cells. Moreover, the inhibitive effects of PDZK1 on SHP-1 phosphorylation and the tumor growth were verified in vivo by xenograft tumor studies. Accordingly, PDZK1 expression was negatively correlated with SHP-1 activation and phosphorylation, advanced pathologic stage, tumor weight and size, and prognosis of ccRCC patients. These findings have provided first lines of evidences that PDZK1 expression is negatively correlated with SHP-1 activation and poor clinical outcomes in ccRCC. PDZK1 was identified as a novel tumor suppressor in ccRCC by negating SHP-1 activity.
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Xie J, Jones T, Feng D, Cook T, Jester A, Yi R. Human Adipose-Derived Stem Cells Suppress Elastase-Induced Murine Abdominal Aortic Inflammation and Aneurysm Expansion Through Paracrine Factors. J Vasc Surg 2017. [DOI: 10.1016/j.jvs.2017.03.408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Feng S, Yang J, Wang W, Hu X, Liu H, Qian X, Feng D, Zhang X. Incidence and Risk Factors for Cytomegalovirus Infection in Patients With Kidney Transplantation: A Single-Center Experience. Transplant Proc 2017; 48:2695-2699. [PMID: 27788803 DOI: 10.1016/j.transproceed.2016.08.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 08/03/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND Cytomegalovirus (CMV) infection is deemed to be a major cause of morbidity and mortality in patients after kidney transplantation. The purpose of this study was to analyze the incidence of CMV infection and risk factors for CMV infection in our center, to help in determination of its impact on the kidney function in this patient population, and to provide new ideas for the prevention and treatment of CMV infection. METHODS A total of 319 kidney transplant recipients from our center were studied between January 2000 and December 2015. The CMV viral load in each kidney transplant patients was monitored with the use of CMV quantitative nucleic acid testing (CMV-QNAT). Laboratory data and other medical records were also collected. RESULTS The incidence of CMV infection was 8.8% in our studied patients. The patients within 3 to 6 months and 5 to 10 years after transplantation had a higher risk of CMV infection. CMV infection was probably correlated with lower white blood cell counts but elevated hemoglobin, serum creatinine, blood urea nitrogen, potassium, and estimated glomerular filtration rate (eGFR). Anti-CMV immunoglobulin (Ig)G and history of allograft rejection were also associated with CMV infection. In multivariate regression analysis, white blood cells, eGFR, anti-CMV IgG, and history of allograft rejection were the independent risk factors associated with CMV infection in kidney transplantation patients. CONCLUSIONS CMV infection was an important complication after kidney transplantation, particularly in these patients with allograft impairment.
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Chalmers S, Doerner J, Bosanac T, Khalil S, Smith D, Harcken C, Dimock J, Der E, Herlitz L, Webb D, Seccareccia E, Feng D, Fine J, Ramanujam M, Klein E, Putterman C. OP0164 Blockade of Immune Complex-Mediated Glomerulonephritis by Highly Selective Inhibition of Bruton's Tyrosine Kinase. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Feng D, Zhong C, Zuo Z, Ji Q. P120ctn may participate in epithelial-mesenchymal transition in OSCC. Indian J Cancer 2016; 53:20-4. [DOI: 10.4103/0019-509x.180821] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ren L, Zuo J, Li G, Zheng L, Zhang Z, Ye H, Xia W I, Feng D. EFFECTS OF THE COMBINATION OF NON-PHYTATE PHOSPHORUS, PHYTASE AND 25-HYDROXYCHOLECALCIFEROL ON THE PERFORMANCE AND MEAT QUALITY OF BROILER CHICKENS. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2015. [DOI: 10.1590/1516-635x1703371-380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Qiu M, Xu Y, Wang J, Zhang E, Sun M, Zheng Y, Li M, Xia W, Feng D, Yin R, Xu L. A novel lncRNA, LUADT1, promotes lung adenocarcinoma proliferation via the epigenetic suppression of p27. Cell Death Dis 2015; 6:e1858. [PMID: 26291312 PMCID: PMC4558496 DOI: 10.1038/cddis.2015.203] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 06/17/2015] [Accepted: 06/24/2015] [Indexed: 12/15/2022]
Abstract
Long noncoding RNAs (lncRNAs) are known to regulate the development and progression of various cancers. However, few lncRNAs have been well characterized in lung adenocarcinoma (LUAD). Here, we identified the expression profile of lncRNAs and protein-coding genes via microarrays analysis of paired LUAD tissues and adjacent non-tumor tissues from five female non-smokes with LUAD. A total of 498 lncRNAs and 1691 protein-coding genes were differentially expressed between LUAD tissues and paired adjacent normal tissues. A novel lncRNA, LUAD transcript 1 (LUADT1), which is highly expressed in LUAD and correlates with T stage, was characterized. Both in vitro and in vivo data showed that LUADT1 knockdown significantly inhibited proliferation of LUAD cells and induced cell cycle arrest at the G0–G1 phase. Further analysis indicated that LUADT1 may regulate cell cycle progression by epigenetically inhibiting the expression of p27. RNA immunoprecipitation and chromatin immunoprecipitation assays confirmed that LUADT1 binds to SUZ12, a core component of polycomb repressive complex 2, and mediates the trimethylation of H3K27 at the promoter region of p27. The negative correlation between LUADT1 and p27 expression was confirmed in LUAD tissue samples. These data suggested that a set of lncRNAs and protein-coding genes were differentially expressed in LUAD. LUADT1 is an oncogenic lncRNA that regulates LUAD progression, suggesting that dysregulated lncRNAs may serve as key regulatory factors in LUAD progression.
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Xuan WY, Zhang Y, Liu ZQ, Feng D, Luo MY. Molecular cloning and expression analysis of a novel BCCP subunit gene from Aleurites moluccana. GENETICS AND MOLECULAR RESEARCH 2015; 14:9922-31. [PMID: 26345927 DOI: 10.4238/2015.august.19.27] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Aleurites moluccana L. is grown as a roadside tree in southern China and the oil content of its seed is higher than other oil plants, such as Jatropha curcas and Camellia oleifera. A. moluccana is considered a promising energy plant because its seed oil could be used to produce biodiesel and bio-jet fuel. In addition, the bark, leaves, and kernels of A. moluccana have various medical and commercial uses. Here, a novel gene coding the biotin carboxyl carrier protein subunit (BCCP) was cloned from A. moluccana L. using the homology cloning method combined with rapid amplification of cDNA end (RACE) technology. The isolated full-length cDNA sequence (designated AM-accB) was 1188 bp, containing a 795-bp open reading frame coding for 265 amino acids. The deduced amino acid sequence of AM-accB contained a biotinylated domain located between amino acids 190 and 263. A. moluccana BCCP shows high identity at the amino acid level to its homologues in other higher plants, such as Vernicia fordii, J. curcas, and Ricinus communis (86, 77, and 70%, respectively), which all contain conserved domains for ACCase activity. The expression of the AM-accB gene during the middle stage of development and maturation in A. moluccana seeds was higher than that in early and later stages. The expression pattern of the AM-accB gene is very similar to that of the oil accumulation rate.
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Feng D, Wang N, Hu J, Li W. Surface markers of hepatocellular cancer stem cells and their clinical potential. Neoplasma 2015; 61:505-13. [PMID: 24712843 DOI: 10.4149/neo_2014_061] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cancer stem cells (CSCs) are a small subpopulation of cells within tumors with capabilities of self-renewal, differentiation, and tumorigenicity when transplanted into immune-comprised mice. Accumulating evidences have shown that CSCs or tumor-initiating cells are key drivers of tumor formation and progression in both solid tumors and haematological malignancies. Identification of the CSCs or tumor-initiating cells is a fundamental and important problem in cancer research. There is still a lack of consensus regarding the existence of a "global" marker for CSCs in different human cancers, but isolated CSCs have shown both the tumor-propagating ability in immune-compromised mice and the capacity to fully recapitulate the original heterogeneity of cell types. Several cell surface markers, including CD133, CD44 and CD90, were often used to identify and enrich CSCs. Although not all types of cancer follow the CSC theory, it provides an attractive cellular mechanism to account for the therapeutic resistance and recurrence of the disease. Here we provide a brief review regarding the markers for identification of CSCs in hepatocellular cancer, allowing us to deep understand of the cellular organization of HCC and to develop therapies that target specific CSCs.
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Feng D, Kim J, Khadra M, Hudson DL, Roux C. Guest-editorial: Telehealth systems and applications. IEEE J Biomed Health Inform 2015; 19:81. [PMID: 25561443 DOI: 10.1109/jbhi.2014.2380132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Gao M, Feng D, Yao G, Zhang Y, Chen CL, Lin Y. Chemical and mechanical strains tuned dielectric properties in Zr-doped CaCu3Ti4O12 highly epitaxial thin films. RSC Adv 2015. [DOI: 10.1039/c5ra18149f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The dielectric properties of CaCu3Ti4O12 highly epitaxial thin films were successfully tuned by the in-plane strain.
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Zhang Y, Wang H, Xu S, Mao N, Zhu Z, Shi J, Huang G, Liu C, Bo F, Feng D, Lu P, Liu Y, Wang Y, Lei Y, Chen M, Chen H, Wang C, Fu H, Li C, He J, Gao H, Gu S, Wang S, Ling H, Liu Y, Ding Z, Ba Z, Feng Y, Zheng H, Tang X, Lei Y, Xiong Y, Bellini W, Rota P, Jee Y, Xu W. Monitoring progress toward measles elimination by genetic diversity analysis of measles viruses in China 2009–2010. Clin Microbiol Infect 2014; 20:O566-77. [DOI: 10.1111/1469-0691.12530] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 12/28/2013] [Accepted: 12/30/2013] [Indexed: 02/06/2023]
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Feng D, Huang QY, Liu K, Zhang SC, Liu ZH. Comparative studies of zebrafish Danio rerio lipoprotein lipase (lpl) and hepatic lipase (lipc) genes belonging to the lipase gene family: evolution and expression pattern. JOURNAL OF FISH BIOLOGY 2014; 85:329-342. [PMID: 24905963 DOI: 10.1111/jfb.12423] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 04/11/2014] [Indexed: 06/03/2023]
Abstract
In this study, bioinformatics analysis, tissue distribution and developmental expression pattern of lipoprotein lipase (lpl) and hepatic lipase (lipc) in zebrafish Danio rerio are reported. In adult D. rerio, lpl was highly expressed in liver. This is remarkably different from the tissue expression pattern of LPL in mammals, which is not detected in the adult liver. The expression of lipc was liver specific, which is consistent with that in mammals. During embryogenesis, lpl mRNA was increased gradually in concentration from 0.5 hpf (hour post fertilization) to 6 dpf (days post fertilization), but lipc was not expressed at the early stage of the embryo until 3 dpf. In situ hybridization further displayed the expression pattern of lpl mainly restricted to the head region including cells surrounding the mouth opening, branchial arches, pectoral fin and lateral line neuromast, whereas lipc was mainly restricted to the liver and part of head regions including lens. This lays a foundation for further investigation of lpl or lipc function and evolution in fishes.
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Krishnamoorthy AV, Zheng X, Feng D, Lexau J, Buckwalter JF, Thacker HD, Liu F, Luo Y, Chang E, Amberg P, Shubin I, Djordjevic SS, Lee JH, Lin S, Liang H, Abed A, Shafiiha R, Raj K, Ho R, Asghari M, Cunningham JE. A low-power, high-speed, 9-channel germanium-silicon electro-absorption modulator array integrated with digital CMOS driver and wavelength multiplexer. OPTICS EXPRESS 2014; 22:12289-12295. [PMID: 24921347 DOI: 10.1364/oe.22.012289] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We demonstrate the first germanium-silicon C-band electro-absorption based waveguide modulator array and echelle-grating-based silicon wavelength multiplexer integrated with a digital CMOS driver circuit. A 9-channel, 10Gbps SiGe electro-absorption wavelength-multiplexed modulator array consumed a power of 5.8mW per channel while being modulated at 10.25Gbps by 40nm CMOS drivers delivering peak-to-peak voltage swings of 2V, achieving a modulation energy-efficiency of ~570fJ/bit including drivers. Performance up to 25Gbps on a single-channel SiGe modulator and CMOS driver is also reported.
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Feng D, Wang W, Dong Y, Wu L, Huang J, Ma Y, Zhang Z, Wu S, Gao G, Qin H. Ceftriaxone alleviates early brain injury after subarachnoid hemorrhage by increasing excitatory amino acid transporter 2 expression via the PI3K/Akt/NF-κB signaling pathway. Neuroscience 2014; 268:21-32. [DOI: 10.1016/j.neuroscience.2014.02.053] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 02/25/2014] [Accepted: 02/26/2014] [Indexed: 12/13/2022]
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Feng D, Yang XJ. A clinical dilemma: Pregnancy with asymptomatic elevated total serum bile acid levels. J OBSTET GYNAECOL 2014; 34:444-5. [DOI: 10.3109/01443615.2014.912619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Beals C, Baumgartner R, Peterfy C, Balanescu A, Mirea G, Harabagiu A, Popa S, Cheng A, Feng D, Fox R, Vallee MH, Ashton E, DiCarlo J, Dardzinski B. SAT0492 Treatment Effects Measured by Dynamic Contrast Enhanced MRI and Ramris for Rheumatoid Arthritis. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2013-eular.2216] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Feng D, Stafford KA, Broze GJ, Stafford DW. Evidence of clinically significant extravascular stores of factor IX. J Thromb Haemost 2013; 11:2176-8. [PMID: 24112220 PMCID: PMC3947454 DOI: 10.1111/jth.12421] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Indexed: 11/26/2022]
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Mathews S, Feng D, Gao B. Natural killer T cells play an important role in chronic plus binge ethanol-induced liver injury. Alcohol 2013. [DOI: 10.1016/j.alcohol.2013.09.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Du W, Feng D, Xu J, Wei W. Computational Fluid Dynamics Modeling of Gas-Liquid Two-Phase Flow around a Spherical Particle. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201200486] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Chen G, Li Q, Feng D, Hu T, Fang Q, Wang Z. Expression of NR2B in different brain regions and effect of NR2B antagonism on learning deficits after experimental subarachnoid hemorrhage. Neuroscience 2012; 231:136-44. [PMID: 23219940 DOI: 10.1016/j.neuroscience.2012.11.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 11/04/2012] [Accepted: 11/06/2012] [Indexed: 01/02/2023]
Abstract
Approximately 50% of patients who survived after aneurysmal subarachnoid hemorrhage (SAH) have cognitive or neurobehavioral dysfunction. The mechanisms are not known. NR2B, one of the subunits of N-methyl-d-aspartate (NMDA) receptors, has been proved to be an important factor for synapse function and behavior cognition. Experiment 1 aimed to investigate the timecourse of the NR2B expression in the cortex, hippocampus, and cerebellum after SAH in rats. In experiment 2, we assessed the effect of Ro 25-6981 (a specific NR2B antagonist) on regulation of learning deficits and behavioral activity following SAH. All SAH animals were subjected to injection of autologous blood into the prechiasmatic cistern once on day 0. NR2B was assessed by Western blot analysis and immunohistochemistry. Cognitive and memory changes were investigated in the Morris water maze. As a result, the expression of NR2B was decreased remarkably in SAH groups compared with the control group and the low ebb was on days 1-3. The immunohistochemical staining demonstrated expression of NR2B was present mainly in the neurons in all of the three different regions, such as the cortex, hippocampus, and cerebellum. After Ro 25-6981 intraperitoneal administration, learning deficits induced by SAH was markedly aggravated and clinical behavior scale was also significantly decreased. Our results suggest that NR2B expression is down-regulated in the brain after experimental SAH and NR2B antagonism resulted in augmentation of the development of cognitive dysfunction after SAH.
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Zilkie AJ, Seddighian P, Bijlani BJ, Qian W, Lee DC, Fathololoumi S, Fong J, Shafiiha R, Feng D, Luff BJ, Zheng X, Cunningham JE, Krishnamoorthy AV, Asghari M. Power-efficient III-V/silicon external cavity DBR lasers. OPTICS EXPRESS 2012; 20:23456-23462. [PMID: 23188309 DOI: 10.1364/oe.20.023456] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We report the design and characterization of external-cavity DBR lasers built with a III-V-semiconductor reflective-SOA with spot-size converter edge-coupled to SOI waveguides containing Bragg grating mirrors. The un-cooled lasers have wall-plug-efficiencies of up to 9.5% at powers of 6 mW. The lasers are suitable for making power efficient, hybrid WDM transmitters in a CMOS-compatible SOI optical platform.
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