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Chen Z, Robin C, Damiano J, Lydall J, Lumb C, Smith K, Blasetti A, Daborn PJ, Heckel D, McKenzie JA, Batterham P. Positional cloning of a cyromazine resistance gene in Drosophila melanogaster. INSECT MOLECULAR BIOLOGY 2006; 15:181-6. [PMID: 16640728 DOI: 10.1111/j.1365-2583.2006.00622.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Cyromazine is an effective insecticide used to control dipteran insects. Its precise mode of action is yet to be determined, although it has been suggested that it interferes with the hormone system, sclerotization of the cuticle, or nucleic acid metabolism. To understand the way in which cyromazine acts, we have positionally cloned a cyromazine resistance gene from Drosophila melanogaster. Six cyromazine resistance alleles had previously been generated by ethyl methanasulphonate treatment. Two of these failed to complement each other and here we identify them as having independent non-sense mutations in CG32743, which is an ortholog of Smg1 of worms and mammals and encodes a phosphatidylinositol kinase-like kinase (PIKK). RNAi experiments confirm that cyromazine resistance can be achieved by knocking down CG32743. These are the first cyromazine resistant mutations identified at the nucleotide level. In mammals Smg1 phosphorylates P53 in response to DNA damage. This finding supports the hypothesis that cyromazine interferes with nucleic acid metabolism.
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1777
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Hall CB, Verghese J, Sliwinski M, Chen Z, Katz M, Derby C, Lipton RB. Dementia incidence may increase more slowly after age 90: results from the Bronx Aging Study. Neurology 2006; 65:882-6. [PMID: 16186528 DOI: 10.1212/01.wnl.0000176053.98907.3f] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Dementia incidence increases dramatically from age 65 to age 85, with many studies reporting a doubling every 5 years. The incidence beyond age 85 is not established. OBJECTIVE To estimate the incidence of dementia as a function of age, with a particular focus on persons aged 85 and over. METHODS The Bronx Aging Study began in 1980 with 488 healthy, nondemented community-dwelling individuals, age 75 to 85. Persons in the study received clinical examinations and cognitive testing approximately every 12 months until death or loss to follow-up. The diagnosis of dementia was made using Diagnostic and Statistical Manual of Mental Disorders-III-R at diagnostic case conferences. Dementia incidence rates were calculated for 5-year age bands using person-time of follow-up as the denominator. RESULTS The relative incidence rate ratios of dementia for age 80 to 84 vs 75 to 79 was 2.32 (95% CI 1.23 to 4.37), the relative rate for age 85 to 89 vs 80 to 84 was 1.89 (95% CI 1.26 to 2.83), the relative rate for age 90 to 94 vs 85 to 89 was 1.49 (95% CI 0.86 to 2.58), while the relative rate for age 95 to 99 vs 90 to 94 was 1.31 (95% CI 0.38 to 4.46). Similar results were seen for men and women considered separately. Had the rate of increase from age 75 to 89 continued into the 90s, the study would have had 73% power to detect a significant difference between the rates for age 90 to 94 and 85 to 89 given the amount of observed follow-up time. CONCLUSIONS Whereas dementia incidence continues to increase beyond age 85, the rate of increase appears to slow relative to that of 65- to 85-year-olds. These results suggest that dementia in the oldest old might be related not to the aging process itself but with age-associated risk factors.
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1778
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Honeycutt KA, Chen Z, Koster MI, Miers M, Nuchtern J, Hicks J, Roop DR, Shohet JM. Deregulated minichromosomal maintenance protein MCM7 contributes to oncogene driven tumorigenesis. Oncogene 2006; 25:4027-32. [PMID: 16518415 DOI: 10.1038/sj.onc.1209435] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Minichromosomal maintenance protein 7 (MCM7) is an essential component of the replication helicase complex (MCM2-7) required for DNA replication. Although this function is highly conserved among eukaryotes, additional functions for the MCM molecules continue to be described. Minichromosomal maintenance protein 7 is a marker for proliferation and is upregulated in a variety of tumors including neuroblastoma, prostate, cervical and hypopharyngeal carcinomas. To further investigate the general role of MCM7 in tumorigenesis, we generated a mouse model with deregulated MCM7 expression targeted to the basal layer of the epidermis using the keratin 14 (K14) promoter (K14.MCM7). When subjected to a two-stage chemical carcinogenesis protocol (dimethylbenz[alpha]anthracene (DMBA) initiation with 12-ortho-tetradecanoylphorbol-13-acetate promotion), K14.MCM7 mice showed significantly increased incidence and prevalence of tumor development relative to controls. Furthermore, within 40 weeks of treatment over 45% K14.MCM7 mice exhibited tumors that had converted to squamous cell carcinomas versus none in the control group. As predicted from previous skin carcinogenesis studies using DMBA as the initiating agent, Ras mutations where found in more than 90% of tumors isolated from K14.MCM7 mice. Whereas previous studies have shown that MCM7 is useful as a proliferation marker, our data suggest that deregulated MCM7 expression actively contributes to tumor formation, progression and malignant conversion.
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MESH Headings
- 9,10-Dimethyl-1,2-benzanthracene/pharmacology
- 9,10-Dimethyl-1,2-benzanthracene/toxicity
- Animals
- Biomarkers, Tumor/biosynthesis
- Biomarkers, Tumor/genetics
- Carcinogens/pharmacology
- Carcinogens/toxicity
- Carcinoma, Squamous Cell/chemically induced
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/metabolism
- Carcinoma, Squamous Cell/pathology
- Cell Cycle Proteins/biosynthesis
- Cell Cycle Proteins/genetics
- Cell Proliferation
- Cell Transformation, Neoplastic/chemically induced
- Cell Transformation, Neoplastic/genetics
- Cell Transformation, Neoplastic/metabolism
- DNA-Binding Proteins/biosynthesis
- DNA-Binding Proteins/genetics
- Gene Expression Regulation, Neoplastic/genetics
- Genes, ras/genetics
- Humans
- Mice
- Mice, Transgenic
- Minichromosome Maintenance Complex Component 7
- Mutation
- Neoplasm Proteins/genetics
- Neoplasm Proteins/metabolism
- Neoplasms, Experimental/chemically induced
- Neoplasms, Experimental/genetics
- Neoplasms, Experimental/metabolism
- Neoplasms, Experimental/pathology
- Nuclear Proteins/biosynthesis
- Nuclear Proteins/genetics
- Skin Neoplasms/chemically induced
- Skin Neoplasms/genetics
- Skin Neoplasms/metabolism
- Skin Neoplasms/pathology
- Tetradecanoylphorbol Acetate/analogs & derivatives
- Tetradecanoylphorbol Acetate/pharmacology
- Tetradecanoylphorbol Acetate/toxicity
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1779
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Brown RL, Chen Z, Menkir A, Cleveland TE. Proteomics to identify resistance factors in corn-a review. Mycotoxin Res 2006; 22:22-6. [DOI: 10.1007/bf02954553] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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1780
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Bell R, Sambrook, Chen Z, Lewis J. Relative risk for fractures in postmenopausal women, postmenopausal breast cancer survivors and postmenopausal women managed with adjuvant hormonal therapy. EJC Suppl 2006. [DOI: 10.1016/s1359-6349(06)80197-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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1781
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Trojanowicz B, Chen Z, Bialek J, Radestock Y, Hombach-Klonisch S, Klonisch T, Finke R, Dralle H, Hoang-Vu C. Influence of AUF1 targeting siRNA on cell cycle-related proteins in thyroid cancer cell lines. Exp Clin Endocrinol Diabetes 2006. [DOI: 10.1055/s-2006-932951] [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: 10/19/2022]
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1782
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Trojanowicz B, Winkler A, Hammje K, Chen Z, Sekulla C, Glanz D, Schmutzler C, Mentrup B, Hombach-Klonisch S, Klonisch T, Finke R, Köhrle J, Dralle H, Hoang-Vu C. Retinoic acid actions are connected with downregulation of ENO1 gene products in the follicular thyroid carcinoma cell line FTC-133. Exp Clin Endocrinol Diabetes 2006. [DOI: 10.1055/s-2006-932950] [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: 10/19/2022]
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1783
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Chen Z, Ma CM, Paskalev K, Li J, Yang J, Richardson T, Palacio L, Xu X, Chen L. Investigation of MR image distortion for radiotherapy treatment planning of prostate cancer. Phys Med Biol 2006; 51:1393-403. [PMID: 16510951 DOI: 10.1088/0031-9155/51/6/002] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
MR imaging based treatment planning for radiotherapy of prostate cancer is limited due to MR imaging system related geometrical distortions, especially for patients with large body sizes. On our 0.23 T open scanner equipped with the gradient distortion correction (GDC) software, the residual image distortions after the GDC were <5 mm within the central 36 cm x 36 cm area for a standard 48 cm field of view (FOV). In order to use MR imaging alone for treatment planning the effect of residual MR distortions on external patient contour determination, especially for the peripheral regions outside the 36 cm x 36 cm area, must be investigated and corrected. In this work, we performed phantom measurements to quantify MR system related residual geometric distortions after the GDC and the effective FOV. Our results show that for patients with larger lateral dimensions (>36 cm), the differences in patient external contours between distortion-free CT images and GDC-corrected MR images were 1-2 cm because of the combination of greater gradient distortion and loss of field homogeneity away from the isocentre and the uncertainties in patient setup during CT and MRI scans. The measured distortion maps were used to perform point-by-point corrections for patients with large dimensions inside the effective FOV. Using the point-by-point method, the geometrical distortion after the GDC were reduced to <3 mm for external contour determination and the effective FOV was expanded from 36 cm to 42 cm.
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1784
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Angiolillo AL, Whitlock J, Chen Z, Krailo M, Reaman G. Phase II study of gemcitabine in children with relapsed acute lymphoblastic leukemia or acute myelogenous leukemia (ADVL0022): a Children's Oncology Group Report. Pediatr Blood Cancer 2006; 46:193-7. [PMID: 15929131 DOI: 10.1002/pbc.20419] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND To determine the response rate and toxicity to gemcitabine administered as 10 mg/m2/min x 360 min weekly for 3 weeks in children with relapsed acute lymphoblastic leukemia (ALL) or acute myelogenous leukemia (AML). Gemcitabine is a deoxycytidine analog that inhibits DNA synthesis and repair and has a broad spectrum of antitumor activity. PROCEDURE From April 2001 to April 2003, 23 male and 9 female eligible patients were recruited for the Children's Oncology Group (COG) phase II study of Gemcitabine (ADVL0022). RESULTS One of 20 evaluable patients with ALL and none of 10 evaluable patients with AML had complete responses to gemcitabine; there were no partial responses. Grade 3 or 4 hematologic toxicity and liver toxicity were common during therapy. Only one patient was alive 1 year after entry. The estimated 1-year overall survival probability for the 32 patients was 4% (SE = 3%). CONCLUSIONS Gemcitabine at the dose and schedule in this trial was not effective for children with relapsed AML or ALL.
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1785
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Alam H, Rhee P, Lin T, Ahuja N, Ayuste E, Honma K, Chen Z. Profound hypothermia is superior to ultra-profound hypothermia in improving survival in a swine model of lethal hemorrhage. J Surg Res 2006. [DOI: 10.1016/j.jss.2005.11.178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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1786
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Song Y, Yan B, Chen Z. Synthesis and crystal structure of a novel luminescent cadmium complex. J COORD CHEM 2006. [DOI: 10.1080/00958970500270760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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1787
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Yang LX, Jin CL, Zhu-Ge ZB, Wang S, Wei EQ, Bruce IC, Chen Z. Unilateral low-frequency stimulation of central piriform cortex delays seizure development induced by amygdaloid kindling in rats. Neuroscience 2006; 138:1089-96. [PMID: 16427743 DOI: 10.1016/j.neuroscience.2005.12.006] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2005] [Revised: 11/27/2005] [Accepted: 12/01/2005] [Indexed: 11/20/2022]
Abstract
Low-frequency stimulation of the kindling site interferes with the course of kindling epileptogenesis. The present study examined the effect of unilateral low-frequency stimulation of the central piriform cortex on seizure development induced by amygdaloid kindling in rats. The ipsilateral or contralateral central piriform cortex received low-frequency stimulation (15 min train of 0.1 ms pulses at 1 Hz and 50-150 muA) immediately after termination of once daily kindling stimulation (2 s train of 1 ms pulses at 60 Hz and 150-300 microA) in the right amygdala for 30 days. Low-frequency stimulation of either the ipsilateral or contralateral central piriform cortex significantly suppressed the progression of seizure stages and reduced afterdischarge duration throughout the course of amygdaloid kindling. The marked suppression induced by low-frequency stimulation of the central piriform cortex on either side was predominantly due to the significant retardation of progression from stage 0 to stage 1 and stage 3 to stage 4 seizures. In addition, the suppressive effect of low-frequency stimulation did not disappear when the stimulation was stopped; it could persist for at least 10 days. These findings indicate that brain areas other than the kindling focus, such as the central piriform cortex on both sides, can also be used as reasonable targets for low-frequency stimulation to retard seizure development induced by amygdaloid kindling. Secondly, like the ipsilateral central piriform cortex, the contralateral central piriform cortex may also participate in the progression and secondary generalization of focal seizures. The study suggests that unilateral low-frequency stimulation of the central piriform cortex may have a significant antiepileptogenic effect, and may be helpful for exploring effective and long-lasting therapies for human temporal lobe epilepsy.
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1788
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Hao C, Chen Z, Bao H. ABR-021 The relationship research between the polycystic ovarian syndrome and the pentanucleotide (TTTTA)n microsatellite polymorphism in the CYP19 gene. Reprod Biomed Online 2006. [DOI: 10.1016/s1472-6483(11)60444-6] [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]
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1789
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Baicu S, Taylor MJ, Chen Z, Rabin Y. Vitrification of Carotid Artery Segments: An Integrated Study of Thermophysical Events and Functional Recovery Toward Scale-Up for Clinical Applications. CELL PRESERVATION TECHNOLOGY 2006; 4:236-244. [PMID: 18185850 PMCID: PMC2180387 DOI: 10.1089/cpt.2006.9994] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In recent years, ice-free cryopreservation by vitrification has been demonstrated to provide superior preservation of tissues compared with conventional freezing methods. To date, this has been accomplished almost exclusively for small model systems, whereas cryopreservation of large tissue samples-of a clinically useful size-continues to be hampered by thermomechanical effects that compromise the structure and function of the tissue. Reduction of mechanical stress is an integral condition of successful cryopreservation of large specimens. The current study focuses on the impact of sample size on both the physical events, observed by cryomacroscopy, and on the outcome on tissue function. To this end, the current study sought to address the question of functional recovery of vitrified carotid artery segments, processed as either artery rings (3-4 mm long) or segments (25 mm long) as selected models; the latter model represents a significant increase in sample size for evaluating the effects of vitrification. Tissue vitrification using an 8.4 M cryoprotectant cocktail solution (VS55) was achieved in 1-ml samples by imposing either a high (50-70 °C/min) or a low (2-3 °C/min) cooling rate, between -40°C and -100°C, and a high rewarming rate between -100°C and -40°C. Following cryoprotectant removal, the artery segments were cut into 3 to 4-mm rings for function testing on a contractility apparatus by measuring isometric responses to four agonist and antagonists (norepinephrine, phenylepinephrine, calcium ionophore, and sodium nitroprusside). In addition, nonspecific metabolic function of the vessel rings was determined using the REDOX indicator alamarBlue. Contractile function in response to the agonists norepinephrine and phenylepinephrine was maintained at the same level (350%) for the segments as for the rings, when compared with noncryopreserved control samples. Relaxation in response to the antagonists calcium ionophore and sodium nitroprusside was maintained at between 75% and 100% of control levels, irrespective of cooling rate or sample size. No evidence of macroscopic crystallization or fractures was observed by cryomacroscopy at the above rates in any of the samples. In conclusion, this study verifies that the rate of cooling and warming can be reduced from our baseline vitrification technique such that the function of larger tissue samples is not significantly different from that of smaller blood vessel rings. This represents a step toward the goal of achieving vitreous cryopreservation of large tissue samples without the destructive effect of thermal stresses.
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1790
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Ridgway JM, Guo S, Vokes D, Perez J, Su J, Armstrong WB, Shibuya T, Crumley RL, Chen Z, Wong BJ. 554 IN VIVO OPTICAL COHERENCE TOMOGRAPHY OF THE PEDIATRIC AERODIGESTIVE TRACT. J Investig Med 2006. [DOI: 10.2310/6650.2005.x0004.553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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1791
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Li L, Pan X, Du W, Li M, Cao H, Chen Z. P.038 Differences of ymdd mutational patterns, pre-core/core promoter mutations, serum viral loads in lamivudine-resistant hepatitis B genotypes B and C. J Clin Virol 2006. [DOI: 10.1016/s1386-6532(06)80221-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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1792
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Ren J, Wang L, Chen Z, Ma ZM, Zhu HG, Yang DL, Li XY, Wang BI, Fei J, Wang ZG, Wen YM. Gene expression profile of transgenic mouse kidney reveals pathogenesis of hepatitis B virus associated nephropathy. J Med Virol 2006; 78:551-60. [PMID: 16555286 DOI: 10.1002/jmv.20575] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Hepatitis B virus (HBV)-associated nephritis has been reported worldwide. Immune complex deposition has been accepted as its pathogenesis, although the association between the presence of local HBV DNA and viral antigen and the development of nephritis remains controversial. To understand better the roles played by HBV protein expression in the kidney, the global gene expression profile was studied in the kidney tissue of a lineage of HBV transgenic mouse (#59). The mice expressed HBsAg in serum, and HBsAg and HBcAg in liver and kidney, but without virus replication. Full-length HBV genome (adr subtype, C genotype) isolated from a chronic HBV carrier was used to establish the transgenic mice #59. Similarly manipulated mice that did not express HBV viral antigens served as controls. Southern blotting, hybridization with HBV probe, and immuno-histochemical staining were used to study HBV gene expression. mRNA extracted from the kidney tissue was analyzed using Affymetrix microarrays. HBsAg and HBcAg were located mainly in the cytoplasm of tubular epithelium. Altogether 520 genes were "up-regulated" more than twofold and 76 genes "down-regulated" more than twofold in the kidney. The complement activation, blood coagulation, and acute-phase response genes were markedly "up-regulated". Compared to the controls, the level of serum C3 protein was decreased in #59 mice, while the level of C3 protein from kidney extract was increased. Results indicate that expression of HBsAg and HBcAg in tubular epithelial cells of the kidney per se can up-regulate complement-mediated inflammatory gene pathways, in addition to immune complex formation.
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1793
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Li M, Li Y, Chen Z. ABR-003 Delivery of twin babies from cryopreserved human oocytes by vitrification. Reprod Biomed Online 2006. [DOI: 10.1016/s1472-6483(11)60426-4] [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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1794
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Hsieh A, Ryan D, Chen Z, Liu Y, Nesson S, Yu M. Intradiscal pressures in rat tail discs measured using a miniaturized fiber-optic sensor. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)82982-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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1795
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Chen Z, Fadiel A, Xia Y. Functional duality of merlin: A conundrum of proteome complexity. Med Hypotheses 2006; 67:1095-8. [PMID: 16824698 DOI: 10.1016/j.mehy.2006.04.063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2006] [Accepted: 04/26/2006] [Indexed: 10/24/2022]
Abstract
Merlin and ezrin proteins belong to the same gene family, i.e., MERM containing merlin, ezrin radixin and moesin. Members of this family possess an extensive homology in their amino acid sequences. It has been shown that merlin is a tumor suppressor, while ezrin is a promoter in tumor progression. The expression of these two proteins is commonly found inversely proportional to each other in cancer cells, i.e. down-regulation of merlin concomitant with over-expression of ezrin and vice versa. However, when determining merlin and ezrin in ovarian carcinoma cells, we have observed that both merlin and ezrin could be over-expressed simultaneously in some ovarian cancer (OVCA) cell lines and OVCA ascites cells, suggesting that merlin could be an oncoprotein rather than a tumor suppressor protein in certain OVCA cells. The functional duality of merlin might represent a paradigm in proteome complexity and is especially important in investigating multifactorial diseases such as cancer.
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1796
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Bondy S, Elit L, Chen Z, Law C, Paszat L. Prognostic factors for women with Stage 1 ovarian cancer with or without adhesions. EUR J GYNAECOL ONCOL 2006; 27:585-8. [PMID: 17290587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
OBJECTIVE To identify those prognostic factors in women with Stage 1 epithelial ovarian cancer that predict survival. METHODS A population-based cohort study was conducted which included all newly diagnosed ovarian cancer patients treated initially with surgery from 1996-1998 in Ontario, Canada (N = 1,341). We abstracted charts from hospitals and cancer centres and used hospital and billing claims databases. Cox survival analysis was used to model the association between prognostic factors (including patient characteristics, surgical findings, pathologic findings and subsequent treatment) and survival for those with Stage 1 ovarian cancer. RESULTS 327 women had Stage 1 or 2 ovarian cancer (where Stage 2 was based on adhesions alone). Prognostic factors that had significant, unadjusted, association with survival were patient age, presence or absence of adhesions, grade, and surface involvement. The multivariable model that best described survival included premenopausal age group (HR 0.32, 95% CI, 0.18-0.55), poor differentiation (HR 2.17, 95% CI, 1.33-3.51), and surface capsule involvement (HR 2.97, 95% CI, 1.59-5.55). A lack of influence of treatment modality stands in contrast to the literature. CONCLUSIONS Our dataset confirmed that poor grade and surface capsule involvement are poor prognostic factors. Adjuvant therapy did not confer an improved outcome; however, it was likely used in only those patients with poor prognostic indicators and so improved their survival to that of women with good prognostic factors who received surgery alone.
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1797
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Matsuoka N, Uji M, Hiramura H, Chen Z, Shikai N, Kishida Y, Kitamura T. Adolescents' attachment style and early experiences: a gender difference. Arch Womens Ment Health 2006; 9:23-9. [PMID: 16222424 DOI: 10.1007/s00737-005-0105-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2004] [Accepted: 08/22/2005] [Indexed: 10/25/2022]
Abstract
We examined gender differences in perceived rearing and adult attachment style in adolescents. A total of 3,912 senior college students (1,149 men and 2,763 women) ages 18-23 (men's M = 20.1 years, women's M = 20.0 years) were administered a set of questionnaires including Relationship Questionnaire (to measure adult attachment), the Parental Bonding Instrument (perceived rearing), and a list of early life events. In the men, positive adult total attachment style was predicted by the scores of paternal care and low scores on maternal overprotection in a hierarchical regression analysis. On the other hand, in the women, positive adult total attachment style was predicted by the scores of paternal and maternal care, and low score on maternal overprotection. Adult attachment was also predicted by fewer Peer Victimization experience as a child in both men and women. However, while men's adult attachment was predicted by Self Disease experiences, women's adult attachment was predicted by Top Star experiences and fewer Relocation experiences. The adult attachment style was predictable from early experiences but there existed some gender differences.
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1798
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Tseng L, Mukai D, Guo S, Kreuter K, Brenner E, Chen Z, Brenner M. 491 EVALUATION OF AIRWAY EDEMA FROM SMOKE INHALATION USING OPTICAL COHERENCE TOMOGRAPHY. J Investig Med 2006. [DOI: 10.2310/6650.2005.x0004.490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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1799
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Hao C, Chen Z, Qu Q. ABR-018 Associated research between polycystic ovarian syndrome and the pentanucleotide (TTTTA)n microsatellite polymorphism in the CYP11a gene promoter. Reprod Biomed Online 2006. [DOI: 10.1016/s1472-6483(11)60441-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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1800
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Rompato G, Ling E, Chen Z, Van Kruiningen H, Garmendia AE. Positive inductive effect of IL-2 on virus-specific cellular responses elicited by a PRRSV-ORF7 DNA vaccine in swine. Vet Immunol Immunopathol 2006; 109:151-60. [PMID: 16162362 DOI: 10.1016/j.vetimm.2005.08.015] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2005] [Revised: 08/03/2005] [Accepted: 08/08/2005] [Indexed: 12/24/2022]
Abstract
This study investigated the effect of swine interleukin 2 (IL-2) and swine interleukin 4 (IL-4) on the development of immune responses induced by a PRRSV-ORF7 DNA vaccine (phCMV-ORF7). The two cytokines were cloned separately in the eukaryotic expression vector phCMV, and delivered via gene gun as adjuvants for the DNA vaccine. Groups of 3-week-old certified PRRSV-free, castrated male, Yorkshire crossbred pigs, were vaccinated with or without the IL-2 or IL-4. The ensuing humoral and cellular immune responses were analyzed by a PRRSV-specific ELISA, and by an in vitro blastogenic response of peripheral blood mononuclear cells (PBMC) stimulated by viral antigen, respectively. The animals were boosted 21 days post-vaccination and challenged 28 days afterward. The virus loads post-challenge were measured by real time PCR. The group of swine receiving the vaccine plus IL-2 had significant virus-specific blastogenic responses 3 weeks after the vaccine-cytokine boost, when compared to those of the experimental pigs that received the vaccine plus IL-4, vaccine alone, unvaccinated controls or the pigs vaccinated with the DNA vaccine cloned in the reverse orientation (phCMV-ORF7(Rev)). None of the experimental swine had detectable specific antibodies against the virus during the vaccination phase. The virus load peak in vaccinated animals was delayed by about 72h as compared to that of the control pigs (unvaccinated and vaccinated with the phCMV-ORF7(Rev) construct). Interestingly, animals that received the phCMV-ORF7 vaccine alone consistently had low virus loads throughout the study. These results demonstrate that IL-2 has a positive inductive effect on the activation of vaccine-induced virus-specific cellular immunity, while IL-4 appeared to have a suppressive effect. Our data also suggest that ORF7 may play a role in reducing the virus load in PRRSV infected animals.
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