501
|
Lorke DE, Wai MSM, Liang Y, Yew DT. TUNEL and growth factor expression in the prefrontal cortex of Alzheimer patients over 80 years old. Int J Immunopathol Pharmacol 2010; 23:13-23. [PMID: 20377991 DOI: 10.1177/039463201002300102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
To elucidate factors underlying the increased risk of developing Alzheimers disease (AD) in older individuals, the prefrontal cortices of younger (58-79 years) and of older (over 80 years) AD patients were examined by silver impregnation, TUNEL assay and immunohistochemistry for hyperphosphorylated tau, LDH and two growth factors (BDNF, NGF). Quantitative data were compared with those of age-matched controls. TUNEL-positive cells were mainly located in superficial cortical layers of younger and in deeper layers of older AD patients. Their density was more than 5 times higher in older AD than in younger AD (p < or = 0.05), but apoptotic cell morphology was rarely seen. Significantly more neuronal somas were contacted by degenerating fibers both in younger and older AD cortices. Density of tau-immunoreactive cells, which were virtually absent in controls, was twice as high in older AD patients as in younger AD individuals (p < or = 0.05). In younger AD, TUNEL positive cells generally lacked tau immunoreaction, whereas in older AD, most cells were double-labeled for hyperphosphorylated tau and TUNEL (p < or = 0.05). Numerical density of BDNF-immunoreactive cells was significantly reduced by 20 percent in older AD patients, compared to both control individuals and younger AD patients, whereas density of NGF-positive cells was the same in all patient groups examined. The distinct differences between younger and older AD patients suggest a faster progression of AD in older patients.
Collapse
|
502
|
Zhang L, Liang Y, Liu Y, Xiong CL. The role of brain-derived neurotrophic factor in mouse oocyte maturation in vitro involves activation of protein kinase B. Theriogenology 2010; 73:1096-103. [DOI: 10.1016/j.theriogenology.2010.01.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2009] [Revised: 12/24/2009] [Accepted: 01/09/2010] [Indexed: 01/16/2023]
|
503
|
Kwok CK, Yang SM, Mak NK, Wong CKC, Liang Y, Leung SY, Young L, Wong MH. Ecotoxicological study on sediments of Mai Po marshes, Hong Kong using organisms and biomarkers. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2010; 73:541-549. [PMID: 20153057 DOI: 10.1016/j.ecoenv.2010.01.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2009] [Revised: 01/14/2010] [Accepted: 01/16/2010] [Indexed: 05/28/2023]
Abstract
Sediments from Mai Po Ramsar site, Hong Kong were in general shown to be highly toxic based on the results of four toxicity tests (Microtox solid-phase test, Daphnia mortality test, algal [Microcystis aeruginosa] growth inhibition test and ryegrass [Lolium perenne] seed germination/root elongation test). Sediment of the mudflat (which is open to Deep Bay, i.e., the pollution source) was the most toxic while sediment of gei wai 24g (an enclosed freshwater pond) was the least toxic. Results of biomarker studies (tilapia hepatic metallothionein; glutathione (GSH) and EROD activity using H4IIE rat hepatoma cell) were also concordant with those in the toxicity tests. Significant liner relationships (p<0.01) were found between GSH contents in the rat hepatoma cells and PAHs, OCPs contents in the sediment extracts. It is recommended that the present suite of bioassays is useful and is biologically relevant for future ecotoxicological studies focusing on similar wetlands.
Collapse
|
504
|
Vogel P, Pletcher JM, Liang Y. Spontaneous acute tumor lysis syndrome as a cause of early deaths in short-term carcinogenicity studies using p53 +/- mice. Vet Pathol 2010; 47:719-24. [PMID: 20435782 DOI: 10.1177/0300985810363484] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Acute tumor lysis syndrome (ATLS) is a potentially lethal condition precipitated by the massive release of intracellular components such as nucleic acids, potassium, and phosphorus, following a rapid and widespread lysis of tumor cells. Herein, the authors describe the high incidence and characteristic histopathologic lesions of acute ATLS in p53-deficient mice used in 2 short-term carcinogenicity studies. ATLS was a frequent cause of early death in p53 (+/-) mice in these studies and was consistently associated with the presence of disseminated lymphoma and leukemia. Although a heavy tumor burden and leukemia were present in all affected mice, the absence of ATLS in other mice with equally severe lymphoma and leukemia indicates that these tumor burdens are necessary but insufficient to cause ATLS in mice. The hallmark histopathologic findings of ATLS in mice are the disseminated microemboli composed of nuclear and cytoplasmic debris derived from lysed tumor cells. The mechanical obstruction of capillary beds by these microemboli appeared to be the proximate cause of the early deaths of mice in these studies. Microemboli may contribute to the pathogenesis of acute renal failure and other clinical signs associated with ATLS in other species. Recognition of ATLS in laboratory animals is critical in studies intended to evaluate the efficacy and/or toxicity of anticancer treatments, where early deaths due to ATLS might otherwise be attributed to test article toxicity. Further studies on the role of microemboli in the pathogenesis of ATLS may elucidate pathogenetic mechanisms and lead to improved approaches to clinical management and treatment of this potentially lethal condition.
Collapse
|
505
|
Zhou M, Du Y, Nie Q, Liang Y, Luo C, Zeng H, Zhang X. Associations between polymorphisms in the chickenVIPgene, egg production and broody traits. Br Poult Sci 2010; 51:195-203. [DOI: 10.1080/00071661003745786] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
506
|
Xu H, Shen X, Zhou M, Luo C, Kang L, Liang Y, Zeng H, Nie Q, Zhang D, Zhang X. The dopamine D2 receptor gene polymorphisms associated with chicken broodiness. Poult Sci 2010; 89:428-38. [DOI: 10.3382/ps.2009-00428] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
507
|
Wu LL, Liu FW, Chu ZQ, Liang Y, Xu HY, Lu HQ, Zhang XT, Li Q, Hark SK. High-yield synthesis of In2−xGaxO3(ZnO)3 nanobelts with a planar superlattice structure. CrystEngComm 2010. [DOI: 10.1039/b927451k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
508
|
Liang Y, Huang L, Yang J. Differential expression of ryanodine receptor in the developing rat cochlea. Eur J Histochem 2009. [DOI: 10.4081/ejh.2009.249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
509
|
Huang X, Yang Y, Zhu J, Gao X, Wang G, Tan H, Liang Y, Li J. Clinical Applications and Acute Hepatotoxicity of Intravenous Amiodarone. J Int Med Res 2009; 37:1928-36. [PMID: 20146893 DOI: 10.1177/147323000903700631] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
This cross-sectional, retrospective study was designed to evaluate the current clinical applications and acute hepatotoxicity of intravenous amiodarone administration at a hospital in China. Clinical data were collected from 1214 patients receiving intravenous amiodarone treatment between October 2003 and September 2005. Baseline patient characteristics, drug indications, administration records and acute hepatotoxicity associated with the drug were examined. Amiodarone was used primarily in arrhythmic patients with obvious cardiac dysfunction. Atrial fibrillation and ventricular arrhythmia were the two most commonly treated dysfunctions. Incorrect indications and administration methods were also noted. Hepatotoxicity occurred in 12.6% of the patients, but was mild in most cases. Males showed a higher incidence of hepatotoxicity than females. The use of amiodarone was considered to be reasonable and standardized, but there was still considerable room for improvement, particularly in the standardization of administration guidelines. Intravenous amiodarone can cause hepatotoxicity and hepatic function tests should be performed soon after giving amiodarone intravenously.
Collapse
|
510
|
Mell L, Liang Y, Bydder M, White G, Lawson J, Yashar C, Mundt A, Bydder G. Functional MRI-guided Bone Marrow-sparing Intensity Modulated Radiotherapy for Pelvic Malignancies. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
511
|
Lei W, Luo Y, Lei W, Luo Y, Yan K, Zhao S, Li Y, Qiu X, Zhou Y, Long H, Zhao M, Liang Y, Su Y, Lu Q. Abnormal DNA methylation in CD4+ T cells from patients with systemic lupus erythematosus, systemic sclerosis, and dermatomyositis. Scand J Rheumatol 2009; 38:369-74. [DOI: 10.1080/03009740902758875] [Citation(s) in RCA: 149] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
512
|
Zhao Y, Liang Y. O1053 Multiplex fluorescent analysis of four short tandem repeats for prenatal diagnosis of haemophilia A in China. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61426-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
513
|
Boules M, Shaw A, Liang Y, Barbut D, Richelson E. NT69L, a novel analgesic, shows synergy with morphine. Brain Res 2009; 1294:22-8. [DOI: 10.1016/j.brainres.2009.07.086] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2009] [Revised: 07/20/2009] [Accepted: 07/25/2009] [Indexed: 10/20/2022]
|
514
|
Hartling L, Shaik MS, Tjosvold L, Leicht R, Liang Y, Kumar M. Music for medical indications in the neonatal period: a systematic review of randomised controlled trials. Arch Dis Child Fetal Neonatal Ed 2009; 94:F349-54. [PMID: 19477913 DOI: 10.1136/adc.2008.148411] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To conduct a systematic review of the efficacy of music for medical indications in term or preterm neonates. METHODS We searched 17 electronic databases, subject bibliographies, reference lists and trials registries. Two reviewers independently screened studies for inclusion, assessed methodological quality, and extracted data. Meta-analysis was not feasible due to heterogeneity in outcomes so a qualitative analysis is presented. RESULTS Nine randomised trials were included. The methodological quality was generally poor (median Jadad score = 1). The outcomes most commonly reported were physiological measures (heart rate (HR), respiratory rate, oxygen saturation (SaO2)), behavioural state and pain. Six studies evaluated music for the painful procedures circumcision (three trials) and heel prick (three trials). For circumcisions, one high quality pilot study (n = 23) showed benefits of music for the outcomes of HR, SaO2 and pain, while two low quality studies showed no difference. For heel prick, three low quality studies provided some evidence that music may be beneficial primarily for measures of behaviour and pain. The remaining studies evaluated the use of music in preterm infants to improve physiological and behavioural parameters (n = 31; benefits observed for behavioural parameters), to reinforce non-nutritive sucking via use of a pacifier activated lullaby (n = 32; significant increase in feeding rates), and to influence physiological stability and behaviours in infants with chronic lung disease (n = 22; no significant differences for outcomes assessed). CONCLUSIONS The heterogeneity in study populations, interventions and outcomes precludes definitive conclusions around efficacy. There is preliminary evidence for some therapeutic benefits of music for specific indications; however, these findings need to be confirmed in methodologically rigorous trials.
Collapse
|
515
|
Zhang C, Wu C, Blanzieri E, Zhou Y, Wang Y, Du W, Liang Y. Methods for labeling error detection in microarrays based on the effect of data perturbation on the regression model. Bioinformatics 2009; 25:2708-14. [DOI: 10.1093/bioinformatics/btp478] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
516
|
Liang Y, Emerson S. SU-FF-I-60: Reduction in Breast Dose in Routine Chest CT Through the Use of Bismuth Breast Shields As Measured by DOT Dosimeters. Med Phys 2009. [DOI: 10.1118/1.3181180] [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
|
517
|
Romanelli F, Paméla J, Kamendje R, Watkins M, Brezinsek S, Liang Y, Litaudon X, Loarer T, Moreau D, Mazon D, Saibene G, Sartori F, de Vries P. Recent contribution of JET to the ITER physics. FUSION ENGINEERING AND DESIGN 2009. [DOI: 10.1016/j.fusengdes.2008.11.088] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
518
|
Liang Y, Rose B, Lewis J, Yashar C, Mundt A, Mell L. WE-E-BRD-01: Investigating Effects of Pelvic Bone Marrow Radiation Dose On Acute Hematologic Toxicity Using High Dimensional Data Analysis. Med Phys 2009. [DOI: 10.1118/1.3182553] [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
|
519
|
Halene TB, Ehrlichman RS, Liang Y, Christian EP, Jonak GJ, Gur TL, Blendy JA, Dow HC, Brodkin ES, Schneider F, Gur RC, Siegel SJ. Assessment of NMDA receptor NR1 subunit hypofunction in mice as a model for schizophrenia. GENES BRAIN AND BEHAVIOR 2009; 8:661-75. [PMID: 19563516 DOI: 10.1111/j.1601-183x.2009.00504.x] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
N-methyl-D-aspartate receptors (NMDARs) play a pivotal role in excitatory neurotransmission, synaptic plasticity and brain development. Clinical and experimental evidence suggests a dysregulation of NMDAR function and glutamatergic pathways in the pathophysiology of schizophrenia. We evaluated electrophysiological and behavioral properties of NMDAR deficiency utilizing mice that express only 5-10% of the normal level of NMDAR NR1 subunit. Auditory and visual event related potentials yielded significantly increased amplitudes for the P20 and N40 components in NMDAR deficient (NR1(neo)-/-) mice suggesting decreased inhibitory tone. Compared to wild types, NR1(neo)-/- mice spent less time in social interactions and showed reduced nest building. NR1(neo)-/- mice displayed a preference for open arms of a zero maze and central zone of an open field, possibly reflecting decreased anxiety-related behavioral inhibition. However, locomotor activity did not differ between groups in either home cage environment or during behavioral testing. NR1(neo)-/- mice displayed hyperactivity only when placed in a large unfamiliar environment, suggesting that neither increased anxiety nor non-specific motor activation accounts for differential behavioral patterns. Data suggest that NMDAR NR1 deficiency causes disinhibition in sensory processing as well as reduced behavioral inhibition and impaired social interactions. The behavioral signature in NR1(neo)-/- mice supports the impact of impaired NMDAR function in a mouse model with possible relevance to negative symptoms in schizophrenia.
Collapse
|
520
|
Hong HC, Wong MH, Liang Y. Amino acids as precursors of trihalomethane and haloacetic acid formation during chlorination. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2009; 56:638-645. [PMID: 18712495 DOI: 10.1007/s00244-008-9216-4] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2008] [Accepted: 07/28/2008] [Indexed: 05/26/2023]
Abstract
Twenty amino acids were chlorinated and examined for the formation of trihalomethane (THM) and haloacetic acid (HAA). The amino acids exhibited a high Cl(2) demand (3.4-10 mg Cl(2) mg(-1) C) but low THM formation (<4.19 microg mg(-1) C) except for tryptophan and tyrosine (45.8 - 147 microg mg(-1) C). Large variation in HAA yield occurred among the amino acids (from not detectable to 106 microg mg(-1) C). One group of amino acids, possessing chain structures, exhibited a slow increase in HAA formation (<6.2 micromol mol(-1) amino acid or <11.3 microg mg(-1) C) as the chlorine demand increased (3.4-8.9 mol Cl(2) mol(-1) amino acids). The other group of amino acids, containing ring structures (including tryptophan, tyrosine, histidine, phenylalanine, and proline) and two amino acids with chain structures (aspartic acid and asparagine), showed a fast increase in HAA formation (16-96 micromol mol(-1) amino acid or 27-106 microg mg(-1) C) with the increase in chlorine demand (5.2-15.9 mol Cl(2) mol(-1) amino acid). The ratios of TCAA to DCAA (mol/mol), derived from the amino acids, ranged between 0.01 and 1.10.
Collapse
|
521
|
Sun X, Zhang S, Wang N, Liang Y, Wang L, Fan S, Sun L. Utility assessment among patients of primary angle closure/glaucoma in China: a preliminary study. Br J Ophthalmol 2009; 93:871-4. [PMID: 19208679 DOI: 10.1136/bjo.2008.139295] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
522
|
Liang Y, Gollany H, Rickman R, Albrecht S, Follett R, Wilhelm W, Novak J, Douglas C. Simulating soil organic matter with CQESTR (v. 2.0): Model description and validation against long-term experiments across North America. Ecol Modell 2009. [DOI: 10.1016/j.ecolmodel.2008.11.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
523
|
Liang Y, Demarest K, Martin T. JNJ-28431754/TA-7284, an inhibitor of sodium glucose cotransporter 2, ameliorates diabetic syndrome in the ZDF rat. Can J Diabetes 2009. [DOI: 10.1016/s1499-2671(09)33132-9] [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: 11/17/2022]
|
524
|
Liu QH, Zhang XL, Ma CY, Liang Y, Huang J. VP37 of white spot syndrome virus interact with shrimp cells. Lett Appl Microbiol 2009; 48:44-50. [DOI: 10.1111/j.1472-765x.2008.02482.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
525
|
Wu X, Yang Y, Han Y, Zhang J, Liang Y, Li H, Li B, Wang L. Effect of recombinant Rv1009 protein on promoting the growth of Mycobacterium tuberculosis. J Appl Microbiol 2008; 105:1121-7. [PMID: 18843791 DOI: 10.1111/j.1365-2672.2008.03850.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
AIMS To determine whether resuscitation-promoting factor (RPF) from Mycobacterium tuberculosis can promote mycobacterial growth and shorten culture time. METHOD AND RESULTS We cloned, expressed and purified an RPF from M. tuberculosis, Rv1009 protein and subsequently studied the biological activity of the recombinant Rv1009 (rRv1009) in liquid and on solid media. Our results indicate that the molecular weight of rRv1009 protein expressed in Escherichia coli BL21 was approximately 39 kDa. At picomolar and micromolar concentrations, rRv1009 protein could increase the optical density of freeze-dried Mycobacterium bovis BCG three to fivefold in Middlebrook 7H9 medium, stimulate the growth of viable mycobacteria on solid medium, and shorten positive growth detection time of a small number of M. tuberculosis in BACTEC 960 medium. CONCLUSIONS The rRv1009 could promote proliferation of mycobacteria. It may be useful for culture of mycobacteria presented in clinical samples. SIGNIFICANCE AND IMPACT OF THE STUDY rRv1009 protein can be used as a growth-promoting reagent of mycobacteria in the medium to shorten the time of culture.
Collapse
|