151
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Wang T, Wei Z, Dou Y, Yang Y, Leng D, Kong L, Dai Y, Xia Y. Intestinal interleukin-10 mobilization as a contributor to the anti-arthritis effect of orally administered madecassoside: A unique action mode of saponin compounds with poor bioavailability. Biochem Pharmacol 2015; 94:30-8. [DOI: 10.1016/j.bcp.2015.01.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Revised: 12/29/2014] [Accepted: 01/06/2015] [Indexed: 02/07/2023]
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152
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Tian T, Zhao G, Han D, Zhu K, Chen D, Zhang Z, Wei Z, Cao Y, Zhou P. Effects of vitrification cryopreservation on follicular morphology and stress relaxation behaviors of human ovarian tissues: sucrose versus trehalose as the non-permeable protective agent. Hum Reprod 2015; 30:877-83. [DOI: 10.1093/humrep/dev012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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153
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Xu S, Yan Z, Jang KI, Huang W, Fu H, Kim J, Wei Z, Flavin M, McCracken J, Wang R, Badea A, Liu Y, Xiao D, Zhou G, Lee J, Chung HU, Cheng H, Ren W, Banks A, Li X, Paik U, Nuzzo RG, Huang Y, Zhang Y, Rogers JA. Assembly of micro/nanomaterials into complex, three-dimensional architectures by compressive buckling. Science 2015; 347:154-9. [DOI: 10.1126/science.1260960] [Citation(s) in RCA: 615] [Impact Index Per Article: 68.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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154
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Wei Z, Sandron S, Townsend AT, Nesterenko PN, Paull B. Determination of trace labile copper in environmental waters by magnetic nanoparticle solid phase extraction and high-performance chelation ion chromatography. Talanta 2015; 135:155-62. [PMID: 25640140 DOI: 10.1016/j.talanta.2014.12.048] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 12/23/2014] [Accepted: 12/29/2014] [Indexed: 10/24/2022]
Abstract
Cobalt magnetic nanoparticles surface functionalised with iminodiacetic acid were evaluated as a nano-particulate solid phase extraction absorbent for copper ions (Cu(2+)) from environmental water samples. Using an external magnetic field, the collector nanoparticles could be separated from the aqueous phase, and adsorbed ions simply decomplexed using dilute HNO3. Effects of pH, buffer concentration, sample and sorbent volume, extraction equilibrium time, and interfering ion concentration on extraction efficiency were investigated. Optimal conditions were then applied to the extraction of Cu(2+) ions from natural water samples, prior to their quantitation using high-performance chelation ion chromatography. The limits of detection (LOD) of the combined extraction and chromatographic method were ~0.1 ng ml(-1), based upon a 100-fold preconcentration factor (chromatographic performance; LOD=9.2 ng ml(-1) Cu(2+)), analytical linear range from 20 to 5000 ng mL(-1), and relative standard deviations=4.9% (c=1000 ng ml(-1), n=7). Accuracy and precision of the combined approach was verified using a certified reference standard estuarine water sample (SLEW-2) and comparison of sample determinations with sector field inductively coupled plasma mass spectrometry. Recoveries from the addition of Cu(2+) to impacted estuarine and rain water samples were 103.5% and 108.5%, respectively. Coastal seawater samples, both with and without prior UV irradiation and dissolved organic matter removal were also investigated using the new methodology. The effect of DOM concentration on copper availability was demonstrated.
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Ye X, Li W, Yang X, Li Y, Huang G, Wang J, Han X, Ni X, Wei Z, Zheng A, Meng M. Microwave ablation as palliative treatment of locally recurrent colorectal cancer. Indian J Cancer 2015; 52 Suppl 2:e61-3. [PMID: 26728676 DOI: 10.4103/0019-509x.172515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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156
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Wei Z, Schumann FO, Li CH, Behnke L, Di Filippo G, Stefani G, Kirschner J. Dynamic screening probed by core-resonant double photoemission from surfaces. PHYSICAL REVIEW LETTERS 2014; 113:267603. [PMID: 25615385 DOI: 10.1103/physrevlett.113.267603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Indexed: 06/04/2023]
Abstract
The universal response of a sudden created core hole, predicted to occur on an attosecond (10(-18) s) time scale, lacks an experimental demonstration. With a two-dimensional coincidence spectrometer, we demonstrate an extensive energy sharing between the Ag 4p photoelectron and the N2,3VV Auger electron exceeding 10 eV. This energy width provides access to the time scale of the emission process. This is the fingerprint of the dynamic fluctuation process 4p(-1)⇌4d(-2)4f. The shakeup induced interband transitions from the Ag(100) surface are also identified by comparing the coincidence spectrum with the M4,5VV Auger transitions.
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157
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Chen W, Wei Z, Ong SH, Machnicki G, Kristijan K. Health Care Utilization and Cost Comparison Between Adherent Hypertension Patients Treated by Single Exforge HCT and Amlodipine/Valsartan/Hydrochlorothiazide Free Combination. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A723. [PMID: 27202570 DOI: 10.1016/j.jval.2014.08.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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158
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Tao L, Chandran A, Hirsch LJ, Wei Z, Wang D, Ji L, Sun Z, Qin G, Li Q. Design & Methods For Study Of Prevalence, Risk Factors And Economic Burden Of Insulin Injection-Related Lipohypertrophy In China. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A741-A742. [PMID: 27202672 DOI: 10.1016/j.jval.2014.08.145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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159
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Wu X, Yang Y, Dou Y, Ye J, Bian D, Wei Z, Tong B, Kong L, Xia Y, Dai Y. Arctigenin but not arctiin acts as the major effective constituent of Arctium lappa L. fruit for attenuating colonic inflammatory response induced by dextran sulfate sodium in mice. Int Immunopharmacol 2014; 23:505-15. [PMID: 25284342 DOI: 10.1016/j.intimp.2014.09.026] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 09/13/2014] [Accepted: 09/24/2014] [Indexed: 01/17/2023]
Abstract
The crude powder of the fruit of Arctium lappa L. (ALF) has previously been reported to attenuate experimental colitis in mice. But, its main effective ingredient and underlying mechanisms remain to be identified. In this study, ALF was extracted with ethanol, and then successively fractionated into petroleum ether, ethyl acetate, n-butanol and water fraction. Experimental colitis was induced by dextran sulfate sodium (DSS) in mice. Among the four fractions of ALF, the ethyl acetate fraction showed the most significant inhibition of DSS-induced colitis in mice. The comparative studies of arctigenin and arctiin (the two main ingredients of ethyl acetate fraction) indicated that arctigenin rather than arctiin could reduce the loss of body weight, disease activity index and histological damage in the colon. Arctigenin markedly recovered the loss of intestinal epithelial cells (E-cadherin-positive cells) and decreased the infiltration of neutrophils (MPO-positive cells) and macrophages (CD68-positive cells). Arctigenin could down-regulate the expressions of TNF-α, IL-6, MIP-2, MCP-1, MAdCAM-1, ICAM-1 and VCAM-1 at both protein and mRNA levels in colonic tissues. Also, it markedly decreased the MDA level, but increased SOD activity and the GSH level. Of note, the efficacy of arctigenin was comparable or even superior to that of the positive control mesalazine. Moreover, it significantly suppressed the phosphorylation of MAPKs and the activation of NF-κB, including phosphorylation of IκBα and p65, p65 translocation and DNA binding activity. In conclusion, arctigenin but not arctiin is the main active ingredient of ALF for attenuating colitis via down-regulating the activation of MAPK and NF-κB pathways.
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160
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Brandt IS, Wei Z, Schumann FO, Kirschner J. Energy relations of positron-electron pairs emitted from surfaces. PHYSICAL REVIEW LETTERS 2014; 113:107601. [PMID: 25238385 DOI: 10.1103/physrevlett.113.107601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Indexed: 06/03/2023]
Abstract
The impact of a primary positron onto a surface may lead to the emission of a correlated positron-electron pair. By means of a lab-based positron beam we studied this pair emission from various surfaces. We analyzed the energy spectra in a symmetric emission geometry. We found that the available energy is shared in an unequal manner among the partners. On average the positron carries a larger fraction of the available energy. The unequal energy sharing is a consequence of positron and electron being distinguishable particles. We provide a model which explains the experimental findings.
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161
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Wu D, Shi W, Chen J, Wei Z, Chen Z, Zhao D, Lan S, Zhong B, Yu H. Zbh-1205: a Novel Camptothecin Derivate Revealed Potent Antitumor Activities Mainly Through Cell Apoptosis Pathway. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu358.36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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162
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Tong B, Wan B, Wei Z, Wang T, Zhao P, Dou Y, Lv Z, Xia Y, Dai Y. Role of cathepsin B in regulating migration and invasion of fibroblast-like synoviocytes into inflamed tissue from patients with rheumatoid arthritis. Clin Exp Immunol 2014; 177:586-97. [PMID: 24749816 PMCID: PMC4137842 DOI: 10.1111/cei.12357] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2014] [Indexed: 12/27/2022] Open
Abstract
Cathepsin B (CB), an important proteinase that participates in joint destruction in rheumatoid arthritis (RA), exhibits higher expression in fibroblast-like synoviocyte (FLS) of abnormal proliferative synovial tissues. Whether and how it affects the biological behaviours of RA-FLS, such as migration and invasion, are poorly understood. In the present study, CB expression in synovial tissues of patients with RA and ostearthritis (OA) were measured by quantitative polymerase chain reaction (qPCR) and immunohistochemistry (IHC), respectively. Stable depletion of endogenous CB was achieved by small interfering RNA (siRNA) transfection, and decrease of CB activity was acquired by using its specific inhibitor (CA074Me). The effects of CA074Me and RNA interference (RNAi) treatments on proliferation, migration, invasion, matrix metalloproteinase (MMP)-2/-9 expression, focal adhesion kinase (FAK) activation, and mitogen-activated protein kinases (MAPKs) phosphorylation of FLS were analysed. In RA synovial tissues, CB was expressed at elevated levels compared with OA synovial tissues. CA074Me could inhibit invasion of FLS obtained from RA patients in an ex-vivo invasion model. CA074Me and siRNA treatments suppressed the migration and invasion of FLS, reduced the activity, expression and mRNA level of MMP-2, restrained the activation of FAK and reduced the expression of F-actin. Moreover, CA074Me decreased the phosphorylation of P38 MAPK and c-Jun N-terminal kinase (JNK) in FLS, while siCB treatment reduced the phosphorylation of P38 but not JNK. CB substantially contributes to the invasive phenotype of FLS that leads to joint destruction in RA. This proteinase may show promise as a therapeutic target in inflammatory arthritis.
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163
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Shen B, Wang W, Ding L, Sao Y, Huang Y, Shen Z, Zhuo Y, Wei Z, Zhang W. Nuclear factor erythroid 2-related factor 2 rescues the oxidative stress induced by di-N-butylphthalate in testicular Leydig cells. Hum Exp Toxicol 2014; 34:145-52. [PMID: 24917652 DOI: 10.1177/0960327114530744] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Aim: This study aimed to determine whether nuclear factor erythroid 2-related factor 2 antagonized the oxidative stress induced by di- N-butylphthalate (DBP) in testicular Leydig cells. Methods: Mouse TM3 testicular Leydig cells were treated with Nrf2 knockdown (KD) or overexpression in the presence and absence of DBP. Oxidative profiles were examined. Nrf2 target antioxidant genes were studied, and the effects of Nrf2 inducer sulphoraphane (SFN) were tested. Results: DBP induced intracellular oxidative stress to a similar extent with Nrf2 KD. Expression and protein levels of Nrf2 were increased together with its target genes, namely heme oxygenase 1, nicotinamide adenine dinucleotide phosphate quinone oxidoreductase 1 and peroxiredoxin 6, following DBP stimulation. Use of SFN not only restored the intracellular oxidative toxicity but also cell proliferation and testosterone secretion in response to DBP. Conclusion: Increased Nrf2 activity, for example, by SFN can effectively antagonize the oxidative stress in testicular Leydig cells caused by DBP.
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164
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Xu Z, Zhang Z, Gao J, Wei Z, Xu X, Dong J, Tang H, Yi X, Tang C, Zhou W. A modified adrenal gland-sparing surgery based on retroperitoneal laparoscopic radical nephrectomy. World J Surg Oncol 2014; 12:179. [PMID: 24902995 PMCID: PMC4062894 DOI: 10.1186/1477-7819-12-179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 04/29/2014] [Indexed: 11/15/2022] Open
Abstract
Background The objective of this study was to modify the adrenal gland-sparing strategy based on retroperitoneal laparoscopic radical nephrectomy by reviewing the anatomic relationship between the kidney and the adrenal gland. Methods From June 2010 to October 2012, a total of 68 patients (45 males and 23 females) with localized renal cell carcinoma were treated at our hospital. The study included 35 cases that were right side and 33 cases that were left, and average patient age was 54.06 years. The average tumor size was 4.7 cm. Tumors were classified via the TNM staging system. All patients underwent adrenal gland-sparing surgery based on retroperitoneal laparoscopic radical nephrectomy. Results For each patient, surgery was successful without conversion to open surgery. The average operative time was 56.65 ± 26.60 min, and the mean blood loss was 70.61 ± 60.96 ml. All patients were discharged from the hospital 3 to 8 days after surgery. During surgery, the adrenal gland was slightly lacerated in three cases and the peritoneum showed perforation in six cases. Only one case recurred during the study follow-up. Conclusions Based on retroperitoneal laparoscopy radical nephrectomy, this effective adrenal gland-sparing surgery showed direct exposure of tissue and little interference of the upper pole of the kidney. Elevation of the adrenal gland could help with the complete dissection of the adrenal gland from the kidney. The separation of the kidney was rapid, simple and accurate. The probability of adrenal gland damage was reduced. This strategy is recommended for widespread use in T1-2 renal neoplasms.
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165
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Peng ZW, Xu T, He QH, Shi CZ, Wei Z, Miao GD, Jing J, Lim KO, Zuo XN, Chan RCK. Default network connectivity as a vulnerability marker for obsessive compulsive disorder. Psychol Med 2014; 44:1475-1484. [PMID: 24001350 DOI: 10.1017/s0033291713002250] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Aberrant functional connectivity within the default network is generally assumed to be involved in the pathophysiology of obsessive compulsive disorder (OCD); however, the genetic risk of default network connectivity in OCD remains largely unknown. METHOD Here, we systematically investigated default network connectivity in 15 OCD patients, 15 paired unaffected siblings and 28 healthy controls. We sought to examine the profiles of default network connectivity in OCD patients and their siblings, exploring the correlation between abnormal default network connectivity and genetic risk for this population. RESULTS Compared with healthy controls, OCD patients exhibited reduced strength of default network functional connectivity with the posterior cingulate cortex (PCC), and increased functional connectivity in the right inferior frontal lobe, insula, superior parietal cortex and superior temporal cortex, while their unaffected first-degree siblings only showed reduced local connectivity in the PCC. CONCLUSIONS These findings suggest that the disruptions of default network functional connectivity might be associated with family history of OCD. The decreased default network connectivity in both OCD patients and their unaffected siblings may serve as a potential marker of OCD.
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166
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Zhu Y, Samadi N, Martinson M, Bassey B, Wei Z, Belev G, Chapman D. SpectralK-edge subtraction imaging. Phys Med Biol 2014; 59:2485-503. [DOI: 10.1088/0031-9155/59/10/2485] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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167
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You XL, Xing X, Wei Z, Wang MH, Qu GZ. Analysis of the Expression of a CycB Gene Isolated fromNicotiana Tabacum. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2009.10817637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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168
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Wang L, Fu D, Qiu Y, Xing X, Xu F, Han C, Xu X, Wei Z, Zhang Z, Ge J, Cheng W, Xie HL. Genome-wide screening and identification of long noncoding RNAs and their interaction with protein coding RNAs in bladder urothelial cell carcinoma. Cancer Lett 2014; 349:77-86. [PMID: 24705305 DOI: 10.1016/j.canlet.2014.03.033] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 03/19/2014] [Accepted: 03/28/2014] [Indexed: 01/22/2023]
Abstract
To understand lncRNAs expression profiling and their potential functions in bladder cancer, we investigated the lncRNA and coding RNA expression on human bladder cancer and normal bladder tissues. Bioinformatic analysis revealed thousands of significantly differentially expressed lncRNAs and coding mRNA in bladder cancer relative to normal bladder tissue. Co-expression analysis revealed that 50% of lncRNAs and coding RNAs expressed in the same direction. A subset of lncRNAs might be involved in mTOR signaling, p53 signaling, cancer pathways. Our study provides a large scale of co-expression between lncRNA and coding RNAs in bladder cancer cells and lays biological basis for further investigation.
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169
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Zhu PP, Zhu ZZ, Hong YL, Zhang K, Huang WX, Yuan QX, Zhao XJ, Ju ZQ, Wu ZY, Wei Z, Wiebe S, Chapman LD. Common characteristics shared by different differential phase contrast imaging methods. APPLIED OPTICS 2014; 53:861-867. [PMID: 24663264 DOI: 10.1364/ao.53.000861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 12/30/2013] [Indexed: 06/03/2023]
Abstract
There are many variations of differential phase contrast imaging methods. Although these imaging methods are different in configuration, they are alike in imaging by extracting differential phase information through the evaluation of the refraction angles. In this paper, we investigate common characteristics shared by various different differential phase contrast imaging methods.
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170
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Ma Y, Liu X, Wei Z, Wang X, Wang Z, Zhong W, Li Y, Zhu F, Guo C, Zhang L, Wang X. The expression and significance of TIPE2 in peripheral blood mononuclear cells from asthmatic children. Scand J Immunol 2014; 78:523-8. [PMID: 24107080 DOI: 10.1111/sji.12110] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Accepted: 09/05/2013] [Indexed: 10/26/2022]
Abstract
Tumour necrosis factor-α-induced protein-8 like-2 (TIPE2) is a newly identified immune negative regulator. The abnormal expression of TIPE2 has been found in several human inflammatory diseases. However, the expression level and clinical significance of TIPE2 in childhood asthma remain unclear. In this study, we detected TIPE2 expression in peripheral blood mononuclear cells (PBMC) from 42 children with asthma and 39 healthy controls by RT-PCR, qRT-PCR and Western blot. We also detected the levels of serum total immunoglobulin E (IgE), eosinophil (EO), interleukin-4 (IL-4) and interferon-γ (IFN-γ) and analysed the correlations of TIPE2 expression with IgE, EO, IL-4 and IFN-γ. The results showed that TIPE2 mRNA and protein expression were decreased in children with asthma compared with healthy controls. The levels of IgE, EO and IL-4 in the children with asthma were obviously higher than those in normal controls, while the level of IFN-γ in patients with asthma was significantly lower than that in healthy subjects. Furthermore, the expression level of TIPE2 mRNA was negatively correlated with IgE, EO and IL-4. However, no statistically significant correlation was found between TIPE2 mRNA expression and serum IFN-γ level. In conclusion, our data suggest that reduced TIPE2 expression may contribute to the pathogenesis of childhood asthma.
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171
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Liu W, Tkachov R, Komber H, Senkovskyy V, Schubert M, Wei Z, Facchetti A, Neher D, Kiriy A. Chain-growth polycondensation of perylene diimide-based copolymers: a new route to regio-regular perylene diimide-based acceptors for all-polymer solar cells and n-type transistors. Polym Chem 2014. [DOI: 10.1039/c3py01707a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Chain-growth tin-free room temperature polymerization is reported which leads to perylene diimide-based n-type polymers suitable for solar cell and transistor applications.
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172
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Wang J, Wang M, Wei Z, Li M, Huang M, Wang S. The lateral habenular nucleus mediates signal transduction from the insular cortex in OSA rats. Sleep Breath 2013; 18:491-7. [PMID: 24254575 DOI: 10.1007/s11325-013-0910-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 10/08/2013] [Accepted: 11/04/2013] [Indexed: 12/19/2022]
Abstract
PURPOSE The insular cortex (Ic) and habenular nuclei (Hb) of the limbic system are associated with human and animal dyspnea by regulating 5-hydroxytryptamine (5-HT) release in the raphe nuclei (RN). However, the Hb are composed of the medial habenular nucleus (MHb) and the lateral habenular nucleus (LHb). Therefore, it is still unclear whether the Ic signal is conducted through the MHb or LHb. This study aimed to investigate the role of the Hb and Ic in obstructive sleep apnea syndrome (OSA) and the functional relationship between these two structures. METHODS We monitored multiple indicators, including the respiration movement curve, neuronal activity in the MHb and LHb, and arterial blood gas, when stimulating the anterior Ic of Wistar rats. We compared the results with the control group (stimulating the surrounding cortex). RESULTS Electrical stimulation of the Ic in the rat brain caused respiratory disturbances, apnea, reduced blood pH, and aggravated base deficit (more negative base excess value) compared to control animals (p < 0.05). It also reduced the spontaneous firing of the MHb neurons but increased that of the LHb neurons. Electrical stimulation of the Ic induces apnea in rats in a similar manner to human OSA. The Ic and the Hb are functionally linked. Stimulation of the Ic inhibits the MHb, but activates the LHb. It induces OSA-like symptoms by enhancing LHb-mediated inhibition of the RN. CONCLUSIONS This study illustrates the mechanism by which an animal model of OSA is created by stimulating the Ic and promotes understanding of OSA pathogenesis.
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Ghanimati S, Spragg S, Campeau J, Brueggmann D, Jaque J, Chen J, Wei Z, Templeman C. Use of Complementary and Alternative Medicine (CAM) Practices among Patients with Pelvic Pain at an Academic Medical Center. J Minim Invasive Gynecol 2013. [DOI: 10.1016/j.jmig.2013.08.548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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174
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Wei Z, Jun S, Hui Z, Quan X, Liu B. NMR metabonomics analysis of helicopter aviators in maritime. ARCH MAL PROF ENVIRO 2013. [DOI: 10.1016/j.admp.2013.07.077] [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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175
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Lu Q, Wang C, Pan R, Gao X, Wei Z, Xia Y, Dai Y. Histamine synergistically promotes bFGF-induced angiogenesis by enhancing VEGF production via H1 receptor. J Cell Biochem 2013; 114:1009-19. [PMID: 23225320 DOI: 10.1002/jcb.24440] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2012] [Accepted: 10/24/2012] [Indexed: 11/06/2022]
Abstract
Histamine, a major mediator present in mast cells that is released into the extracellular milieu upon degranulation, is well known to possess a wide range of biological activities in several classic physiological and pathological processes. However, whether and how it participates in angiogenesis remains obscure. In the present study, we observed its direct and synergistic action with basic fibroblast growth factor (bFGF), an important inducer of angiogenesis, on in vitro angiogenesis models of endothelial cells. Data showed that histamine (0.1, 1, 10 µM) itself was absent of direct effects on the processes of angiogenesis, including the proliferation, migration, and tube formation of endothelial cells. Nevertheless, it could concentration-dependently enhance bFGF-induced angiogenesis as well as production of vascular endothelial growth factor (VEGF) from endothelial cells. The synergistic effect of histamine on VEGF production could be reversed by pretreatments with diphenhydramine (H1-receptor antagonist), SB203580 (selective p38 mitogen-activated protein kinase (MAPK) inhibitor) and L-NAME (nitric oxide synthase (NOS) inhibitor), but not with cimetidine (H2-receptor antagonist) and indomethacin (cyclooxygenase (COX) inhibitor). Moreover, histamine could augment bFGF-incuced phosphorylation and degradation of IκBα, a key factor accounting for the activation and translocation of nuclear factor κB (NF-κB) in endothelial cells. These findings indicated that histamine was able to synergistically augment bFGF-induced angiogenesis, and this action was linked to VEGF production through H1-receptor and the activation of endothelial nitric oxide synthase (eNOS), p38 MAPK, and IκBα in endothelial cells.
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