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Xiang F, Yan M, Song G, Zheng F. Gene mapping and mutation screening in candidate genes in a Chinese family of autosomal dominant retinitis pigmentosa. GENETIKA 2012; 48:125-129. [PMID: 22567862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We wanted to find the gene defect in a Chinese pedigree with autosomal dominant form of retinitis pigmentosa (ADRP). A small Chinese family with retinitis pigmentosa was collected. The genetic analysis of the family suggested an autosomal dominant pattern. Microsatellite (STR) markers tightly linked to candidate genes for ADRP were selected for linkage analysis. We got a maximum LOD score of 0.87 between markers D19S210 and D19S418. Precursor mRNA-processing factor (PRPF) 31, 3, 8, rhodopsin (RHO), peripherin 2 (PRPH2 or RDS), rod outer segment protein 1 (ROM1), neural retina leucine zipper (NRL), cone-rod homeobox-containing (CRX), inosine-5-prime-monophosphate dehydrogenase, type I (IMPDH1) and retinitis pigmentosa 1 (RPI) were amplified by polymerase chain reaction (PCR) and screened by direct sequencing. One new sequence variation was found. It was the missence mutation c.148G > C (D50H) occurred in exon 1 of RDS gene which existed in all the effected individuals and one unaffected family member. The DNA sequence variation didn't cosegregate with the RP disease. We considered this transition was one new polymorphism which we speculate involved in the pathogenesis of ADRP and increased the risk of ADRP. Further study should be conducted to confirm the causative gene of this family.
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Xiang F, Yah M, Song G, Zheng F. Gene mapping and mutation screeneng in candidate genes in a Chinese family of autosomal dominant retinitis pigmentosa. RUSS J GENET+ 2012. [DOI: 10.1134/s1022795412010188] [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]
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Tao X, Song G, Wen H. Laparoscopic Retrieval of Migrated IUD for a Patient with Stage Ib2 Cervical Cancer: Case Report. J Minim Invasive Gynecol 2011. [DOI: 10.1016/j.jmig.2011.08.556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pham HT, Yao M, Song G, Badiozamani KR, Salcedo - Wasicek C, Wechter D. Preliminary results of a prospective trial of image-guided 3D conformal accelerated partial breast irradiation (APBI). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.27_suppl.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
125 Background: External beam APBI is noninvasive and may offer better coverage of tumor sites in proximity to skin or chest wall than brachytherapy. To improve conformality and accuracy of treatment, we conducted a prospective IRB-approved clinical trial of APBI with implanted gold markers for image guidance. Cosmetic assessments through patient and physician questionnaires were collected. Adverse events were graded according to Common Terminology Criteria for Adverse Events v3.0. This is our preliminary report on toxicity and cosmetic outcomes. Methods: Thirty-four pts were enrolled from 12/06 to 4/10. Eligibility criteria included age > 40, unifocal disease, ductal histology, tumor ≤ 3 cm, surgical margin ≥ 2 mm, and planning target volume: breast volume ratio < 0.2. Vascular invasion, positive axillary nodes, high-grade ductal carcinoma in situ, and extensive intraductal component were excluded. Three gold fiducials were sutured into the operative site at the time of partial mastectomy. The clinical target volume comprised the surgical cavity including all surgical clips and gold fiducials + 10-15 mm. Prescribed dose was 3.85 Gy b.i.d. to 38.5 Gy, using 4–5 non-coplanar beams. Special breathing technique and image guidance with electronic portal imaging were used. Results: Median follow-up is 18 months (range 7-47 months). Most pts had mild acute reactions with only 6% grade 2 erythema. Late toxicities include hyperpigmentation (71% grade 1), fibrosis (26% grade 1, 32% grade 2), skin dimpling or indentation (38% grade 1, 3% grade 2), telangiectasias (12% grade 1), rib fractures in the treatment area (3% grade 2). The only grade 3 toxicity was a seroma requiring surgical excision in one pt. Cosmesis was rated by the pt versus (v.) physician as excellent/good in 85% v. 94%, 80% v. 90%, and 84% v. 85% of the pts at prior to treatment, 6 months, and one year respectively. Ninety-one percent of patients were “totally satisfied with the treatment and results.” No breast recurrences have been observed. Conclusions: Image-guided APBI is well-tolerated, with high patient satisfaction. Early cosmesis results, as assessed by both pts and physicians, are comparable to whole-breast radiotherapy.
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Zhang J, Yang Y, Zhou H, Yang C, Li Q, Song G, Xie Y, Blanchard J, Yu N, Ma X. P1-S4.13 Mapping high risk activities of HIV/AIDS in Gaoxin and Yantan District of Zigong City. Br J Vener Dis 2011. [DOI: 10.1136/sextrans-2011-050108.157] [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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Wen J, Liu L, Song G, Tang B, Li Z. Biallele expression of PEG10 gene in primordial germ cells derived from day 27 porcine fetuses. Reprod Domest Anim 2011; 45:e375-81. [PMID: 20345586 DOI: 10.1111/j.1439-0531.2010.01581.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Primordial germ cells (PGCs) from day 27 porcine fetuses have often been isolated to establish pluripotent embryonic germ (EG) cell lines, but little is known regarding their imprinted gene status. In our study, we attempted to detect the imprinted gene expression of cloned embryos and EG cells derived from individual PGC of day 27 and day 35, using single nucleotide polymorphism (SNP) analysis of the paternally expression gene 10 (PEG10) as a sign of parental-origin-specific expression. The results showed biallelic gene expression of the SNP that occurred in EG cell colonies and almost all of the cloned blastocysts, demonstrating that aberrant imprinted gene expression of PEG10 occurs in the day 27 porcine PGCs, whereas monoallelic expression of the PEG10 gene occurs in all the PGC clones derived from day 35 PGCs. In addition, the same imprinted gene status was observed for blastocysts derived from both male and female PGCs, indicating that the parental genomic imprinting is erased in male and female germlines.
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Picozzi VJ, Boone-Hill NK, Song G. Interferon (IFN)-based chemoradiation (CRT) as initial therapy (RX) for locally advanced pancreatic cancer (LAPC): A single-center experience. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Dolan M, Song G, Liang D, Kellam M, Chandra D, Lamb J. Hydrogen transport through V85Ni10M5 alloy membranes. J Memb Sci 2011. [DOI: 10.1016/j.memsci.2011.02.028] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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109
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Song G, Chen GG, Hu T, Lai PBS. Bid stands at the crossroad of stress-response pathways. Curr Cancer Drug Targets 2011; 10:584-92. [PMID: 20482490 DOI: 10.2174/156800910791859515] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2009] [Accepted: 08/09/2010] [Indexed: 11/22/2022]
Abstract
Bid, a BH3-only Bcl-2 family member, is proven to be a pivotal molecule for the regulation of tumorigenesis by its multiple functions in promoting apoptosis, survival and proliferation. Growing evidence supports that Bid has double roles with respect to stress-response. In most cases it functions in a truncated form, but the cleavage of Bid may not be an absolute requirement for Bid to be pro-apoptotic. Full-length Bid can also translocate to and activate the mitochondria without cleavage. Bid has emerged as a central player linking death signals through surface death receptors to the core apoptotic mitochondrial pathway. Bid is also involved in DNA damage response, and the phosphorylated Bid may negatively regulate its pro-apoptotic function independent of the BH3 domain. This review surveys recent developments in understanding the molecular mechanisms of Bid activation and its roles in regulating the cross-talk of cell cycle arrest and apoptosis.
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Song G, Xu H, Wang H, Macdonald SM, Poon CS. Hypoxia-excited neurons in NTS send axonal projections to Kölliker-Fuse/parabrachial complex in dorsolateral pons. Neuroscience 2011; 175:145-53. [PMID: 21130843 PMCID: PMC3035171 DOI: 10.1016/j.neuroscience.2010.11.065] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Revised: 11/25/2010] [Accepted: 11/30/2010] [Indexed: 11/23/2022]
Abstract
Hypoxic respiratory and cardiovascular responses in mammals are mediated by peripheral chemoreceptor afferents which are relayed centrally via the solitary tract nucleus (NTS) in dorsomedial medulla to other cardiorespiratory-related brainstem regions such as ventrolateral medulla (VLM). Here, we test the hypothesis that peripheral chemoafferents could also be relayed directly to the Kölliker-Fuse/parabrachial complex in dorsolateral pons, an area traditionally thought to subserve pneumotaxic and cardiovascular regulation. Experiments were performed on adult Sprague-Dawley rats. Brainstem neurons with axons projecting to the dorsolateral pons were retrogradely labeled by microinjection with choleras toxin subunit B (CTB). Neurons involved in peripheral chemoreflex were identified by hypoxia-induced c-Fos expression. We found that double-labeled neurons (i.e. immunopositive to both CTB and c-Fos) were localized mostly in the commissural and medial subnuclei of NTS and to a lesser extent in the ventrolateral NTS subnucleus, VLM and ventrolateral pontine A5 region. Extracellular recordings from the commissural and medial NTS subnuclei revealed that some hypoxia-excited NTS neurons could be antidromically activated by electrical stimulations at the dorsolateral pons. These findings demonstrate that hypoxia-activated afferent inputs are relayed to the Kölliker-Fuse/parabrachial complex directly via the commissural and medial NTS and indirectly via the ventrolateral NTS subnucleus, VLM and A5 region. These pontine-projecting peripheral chemoafferent inputs may play an important role in the modulation of cardiorespiratory regulation by dorsolateral pons.
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Song G, Fleming JAGW, Kim J, Spencer TE, Bazer FW. Pregnancy and interferon tau regulate N-myc interactor in the ovine uterus. Domest Anim Endocrinol 2011; 40:87-97. [PMID: 21067885 DOI: 10.1016/j.domaniend.2010.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 09/09/2010] [Accepted: 09/09/2010] [Indexed: 01/24/2023]
Abstract
In ruminants, interferon tau (IFNT) is synthesized and secreted by the mononuclear trophectoderm cells of the conceptus and maintains the corpus luteum and its secretion of progesterone for successful implantation and maintenance of pregnancy. In this study, we examined regulation of the expression of N-myc interactor (NMI) gene by IFNT in the ovine uterus based on results of microarray data from a study that compared gene expression by human 2fTGH and U3A (STAT1-null 2fTGH) cell lines in response to treatment with IFNT or vehicle. In the present study, semiquantitative reverse transcription-polymerase chain reaction analyses verified that IFNT stimulated expression of NMI mRNA in 2fTGH (ie, in a STAT1-dependent manner), but not in U3A (STAT1-null) cells. Furthermore, results of western blot analyses indicated that immunoreactive NMI proteins in 2fTGH and U3A cell lines increased in a time-dependent manner only in response to IFNT. In ovine endometria, steady-state levels of NMI mRNA increased between days 14 and 16 of pregnancy and then decreased slightly by day 20, but there was no effect of day of the estrous cycle. Expression of NMI mRNA was most abundant in endometrial stromal cells, glandular epithelium, and conceptus trophectoderm. Intrauterine infusion of IFNT in cyclic ewes increased expression of NMI in the endometrium. Expression of NMI in ovine and bovine uterine cell lines increased in response to IFNT. Collectively, the results of the present study indicate that IFNT regulates expression of NMI mRNA and protein in ovine endometria during pregnancy via a STAT1-dependent cell signaling pathway.
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Ishizaki H, Chijiiwa K, Manuel E, Srivastava T, Song G, Diamond DJ, Ellenhorn JD. Effect of gemcitabine on specific antitumor responses of modified vaccinia Ankara (MVA) expressing survivin in a murine pancreatic carcinoma model. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
256 Background: Survivin is overexpressed by 70% to 80% of pancreatic cancers, and is associated with resistance to chemotherapy and a poor prognosis. Gemcitabine has been a standard treatment for patients with advanced pancreatic cancer for a decade. Recent reports have demonstrated that gemcitabine treatment attenuates the tumor-suppressive environment by eliminating CD11b+/Gr- 1+ myeloid derived suppressor cells (MDSCs). We hypothesize that a cancer vaccine targeting survivin can achieve enhanced efficacy when combined with gemcitabine. Methods: In this study, we tested this hypothesis using modified vaccinia Ankara (MVA) expressing full-length murine survivin. The poorly immunogenic mouse pancreas adenocarcinoma cell line, Pan02, which expresses murine survivin and is syngeneic to C57BL/6, was used for this study. Results: Immunization with MVA-survivin resulted in a modest therapeutic antitumor effect on established Pan02 tumors. When administered with gemcitabine, MVA-survivin immunization resulted in significant tumor regression and prolonged survival. The enhanced vaccine efficacy was associated with decreased CD11b+/Gr-1+ MDSCs. To analyze thesurvivin specific immune response to MVA-survivin immunization, we utilizeda peptide library of 15mers with 11 residues overlapping fromfull-length murine survivin. Splencytes from miceimmunized with MVA-survivin produced intracellular γ-interferon inresponse to in vitro stimulation with the overlapping peptidelibrary. Increased survivin-specific CD8+ T cells that specifically recognized the Pan02 tumor line were seen in mice treated with MVA-survivin and gemcitabine. Conclusions: Thesedata suggestthat vaccination with MVA-survivin in combination with gemcitabine represents an attractive strategy to overcometumor-induced peripheral immune tolerance, and this effect has potential for clinical benefit in pancreatic cancer. No significant financial relationships to disclose.
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Zhao J, Wang Y, Wang H, Jiang C, Liu Z, Meng X, Song G, Cheng N, Graviss EA, Ma X. Low agreement between the T-SPOT®.TB assay and the tuberculin skin test among college students in China. Int J Tuberc Lung Dis 2011; 15:134-136. [PMID: 21276310 PMCID: PMC3118013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
T-SPOT®.TB and the tuberculin skin test (TST) were used to screen for latent tuberculosis infection among 899 Chinese college students. The positivity rates for T-SPOT®.TB and TST were respectively 13.0% (95% confidence interval [CI] 10.4-15.9) and 24.9% (95%CI 21.5-28.6) among students with a bacille Calmette-Guérin (BCG) scar (agreement of both tests 72.3%; 95%CI 68.6-75.8; κ = 0.118), and respectively 17.3% (95%CI 11.7-24.2) and 23.7% (95%CI 17.3-31.2) among those without a BCG scar (agreement 73.1%; 95%CI 65.4-79.9; κ = 0.179). These results demonstrate low agreement between the TST and T-SPOT.TB in the Chinese population studied.
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Sun Y, Song G, Yin J, Chen J, Chen JH, Song J, Chen JDZ. Effects and mechanisms of electroacupuncture on glucagon-induced small intestinal hypomotility in dogs. Neurogastroenterol Motil 2010; 22:1217-23, e318. [PMID: 20723072 DOI: 10.1111/j.1365-2982.2010.01565.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Little is known on the effect of electroacupuncture (EA) (Br Med J, 2, 1976, 1225) on intestinal motility. The aim of this study was to investigate effects and mechanisms of EA on small intestinal contractions, transit, and slow waves in dogs. METHODS Six dogs were equipped with two intestinal cannulas for the measurement of small intestinal contractions and transit. Glucagon was used to induce postprandial intestinal hypomotility. Each dog was studied in five randomized sessions: Control, glucagon, glucagon + EA, glucagon + EA + naloxone, and glucagon + EA + atropine. KEY RESULTS 1 In the fasting state, EA induced intestinal contractions during motor quiescence (contractile index or CI: 4.4 ± 0.8 VS 8.3 ± 0.7, P < 0.05). 2 In the fed state, EA improved glucagon-induced intestinal hypomotility (CI: 3.8 ± 0.4 VS 6.1 ± 0.6, P < 0.05). 3 Electroacupuncture accelerated intestinal transit delayed by glucagon (67.9 ± 4.3 VS 40.2 ± 5.0 min, P < 0.05). 4 There was a negative correlation between the CI and the total transit time (R(2) = 0.59, P < 0.05). 5 The excitatory effect of EA was blocked by naloxone and partially blocked by atropine. 6 The percentage of normal slow waves was reduced with glucagon (70 ± 2%VS 98 ± 1% at baseline, P = 0.0015). Electroacupuncture normalized impaired slow waves and the effect was blocked by naloxone. CONCLUSIONS & INFERENCES Electroacupuncture enhances intestinal contractions during Phase I of the migrating motor complex and glucagon-induced hypomotility in the fed state, and accelerates intestinal transit via the opioid and cholinergic pathways in dogs. Electroacupuncture may have a therapeutic potential for intestinal hypomotility.
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Yao M, Song G, Badiozamani K, Wechter D, Salcedo-Wasicek C, Seddon E, Thompson D, Pham H. Image-guided Partial Breast Irradiation: Initial Feasibility Report of a Prospective Clinical Trial. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Pham H, Song G, Badiozamani K, Yao M, Corman J, Hsi R, Madsen B. Five-year Outcome of Stereotactic Hypofractionated Accurate Radiotherapy of the Prostate (SHARP) for Patients with Low-risk Prostate Cancer. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.168] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Song G, Kellam M, Liang D, Dolan M. Influence of processing conditions on the microstructure and permeability of BCC V–Ni membranes. J Memb Sci 2010. [DOI: 10.1016/j.memsci.2010.07.051] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Zamboni W, Wu H, La-Beck N, Gehrig P, Song G, Walsh M, Gabizon A, Ramanathan R, Caron W. 24 Factors affecting the pharmacokinetics (PK) and pharmacodynamics (PD) of nanoparticle and nanosomal anticancer agents. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71727-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Wong CM, Vichit-Vadakan N, Vajanapoom N, Ostro B, Thach TQ, Chau PYK, Chan EKP, Chung RYN, Ou CQ, Yang L, Peiris JSM, Thomas GN, Lam TH, Wong TW, Hedley AJ, Kan H, Chen B, Zhao N, London SJ, Song G, Chen G, Zhang Y, Jiang L, Qian Z, He Q, Lin HM, Kong L, Zhou D, Liang S, Zhu Z, Liao D, Liu W, Bentley CM, Dan J, Wang B, Yang N, Xu S, Gong J, Wei H, Sun H, Qin Z. Part 5. Public health and air pollution in Asia (PAPA): a combined analysis of four studies of air pollution and mortality. Res Rep Health Eff Inst 2010:377-418. [PMID: 21446215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
BACKGROUND In recent years, Asia has experienced rapid economic growth and a deteriorating environment caused by the increasing use of fossil fuels. Although the deleterious effects of air pollution from fossil-fuel combustion have been demonstrated in many Western nations, few comparable studies have been conducted in Asia. Time-series studies of daily mortality in Asian cities can contribute important new information to the existing body of knowledge about air pollution and health. Not only can these studies verify important health effects of air pollution in local regions in Asia, they can also help determine the relevance of existing air pollution studies to mortality and morbidity for policymaking and environmental controls. In addition, the studies can help identify factors that might modify associations between air pollution and health effects in various populations and environmental conditions. Collaborative multicity studies in Asia-especially when designed, conducted, and analyzed using a common protocol-will provide more robust air pollution effect estimates for the region as well as relevant, supportable estimates of local adverse health effects needed by environmental and public-health policymakers. SPECIFIC OBJECTIVES The Public Health and Air Pollution in Asia (PAPA*) project, sponsored by the Health Effects Institute, consisted of four studies designed to assess the effects of air pollution on mortality in four large Asian cities, namely Bangkok, in Thailand, and Hong Kong, Shanghai, and Wuhan, in China. In the PAPA project, a Common Protocol was developed based on methods developed and tested in NMMAPS, APHEA, and time-series studies in the literature to help ensure that the four studies could be compared with each other and with previous studies by following an established protocol. The Common Protocol (found at the end of this volume) is a set of prescriptive instructions developed for the studies and used by the investigators in each city. It is flexible enough to allow for adjustments in methods to optimize the fit of health-effects models to each city's data set. It provides the basis for generating reproducible results in each city and for meta-estimates from combined data. By establishing a common methodology, factors that might influence the differences in results from previous studies can more easily be explored. Administrative support was provided to ensure that the highest quality data were used in the analysis. It is anticipated that the PAPA results will contribute to the international scientific discussion of how to conduct and interpret time-series studies of air pollution and will stimulate the development of high-quality routine systems for recording daily deaths and hospital admissions for time-series analysis. METHODS Mortality data were retrieved from routine databases with underlying causes of death coded using the World Health Organization (WHO) International Classification of Diseases, 9th revision or 10th revision (ICD-9, ICD-10). Air quality measurements included nitrogen dioxide (NO2), sulfur dioxide (SO2), particulate matter with aerodynamic diameter < or = 10 microm (PM10), and ozone (O3) and were obtained from several fixed-site air monitoring stations that were located throughout the metropolitan areas of the four cities and that met the standards of procedures for quality assurance and quality control carried out by local government units in each city. Using the Common Protocol, an optimized core model was established for each city to assess the effects of each of the four air pollutants on daily mortality using generalized linear modeling with adjustments for time trend, seasonality, and other time-varying covariates by means of a natural-spline smoothing function. The models were adjusted to suit local situations by correcting for influenza activity, autocorrelation, and special weather conditions. Researchers in Hong Kong, for example, used influenza activity based on frequency of respiratory mortality; researchers in Hong Kong and Shanghai used autoregressive terms for daily outcomes at lag days; and researchers in Wuhan used additional smoothing for periods with extreme weather conditions. RESULTS AND DISCUSSION For mortality due to all natural (nonaccidental) causes at all ages, the effects of air pollutants per 10-microg/m3 increase in concentration was found to be higher in Bangkok than in the three Chinese cities, with the exception of the effect of NO2 in Wuhan. The magnitude of the effects for cardiovascular and respiratory mortality were generally higher than for all natural mortality at all ages. In addition, the effects associated with PM10 and O3 in all natural, cardiovascular; and respiratory mortality were found to be higher in Bangkok than in the three Chinese cities. The explanation for these three findings might be related to consistently higher daily mean temperatures in Bangkok, variations in average time spent outdoors by the susceptible populations, and the fact that less air conditioning is available and used in Bangkok than in the other cities. However, when pollutant concentrations were incorporated into the excess risk estimates through the use of interquartile range (IQR), the excess risk was more comparable across the four cities. We found that the increases in effects among older age groups were greater in Bangkok than in the other three cities. After excluding data on extremely high concentrations of PM10 in Bangkok, the effect estimate associated with PM10 concentrations decreased in Bangkok (suggesting a convex relationship between risk and PM10, where risk levels off at high concentrations) instead of increasing, as it did in the other cities. This leveling off of effect estimates at high concentrations might be related to differences in vulnerability and exposure of the population to air pollution as well as to the sources of the air pollutant. IMPLICATIONS OF THE STUDY: The PAPA project is the first coordinated Asian multicity air pollution study ever published; this signifies the beginning of an era of cooperation and collaboration in Asia, with the development of a common protocol for coordination, data management, and analysis. The results of the study demonstrated that air pollution in Asia is a significant public health burden, especially given the high concentrations of pollutants and high-density populations in major cities. When compared with the effect estimates reported in the research literature of North America and Western Europe, the study's effect estimates for PM10 were generally similar and the effect estimates for gaseous pollutants were relatively higher. In Bangkok, however, a tropical city where total exposures to outdoor pollution might be higher than in most other cities, the observed effects were greater than those reported in the previous (i.e., Western) studies. In general, the results suggested that, even though social and environmental conditions across Asia might vary, it is still generally appropriate to apply to Asia the effect estimates for other health outcomes from previous studies in the West. The results also strongly support the adoption of the global air quality guidelines recently announced by WHO.
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Picozzi VJ, Song G. Interferon (IFN)-based chemoradiation (CRT) in localized biliary cancer (LBC): A 10-year (yr) experience. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Chen T, Zou Y, Han M, Wang H, Yan W, Song G, Wu Z, Wang X, Zhu C, Luo X, Ning Q. Increased killing of liver NK cells by Fas/FasL and NKG2D/NKG2DL contributes to hepatocyte necrosis in virus-induced liver failure. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.375] [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] Open
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Forde N, Spencer TE, Bazer FW, Song G, Roche JF, Lonergan P. Effect of pregnancy and progesterone concentration on expression of genes encoding for transporters or secreted proteins in the bovine endometrium. Physiol Genomics 2010; 41:53-62. [DOI: 10.1152/physiolgenomics.00162.2009] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The objective of this study was to determine the temporal and spatial expression patterns of genes encoding transporters, as well as selected secreted proteins that may be regulated by progesterone (P4) and/or the presence of the conceptus in the bovine endometrium. Estrus-synchronized beef heifers were randomly assigned to either: 1) pregnant, high P4; 2) pregnant, normal P4; 3) cyclic, high P4; or 4) cyclic, normal P4. Uteri were collected on days 5, 7, 13, and 16 of the estrous cycle or pregnancy. Localization of mRNAs for ANPEP, CTGF, LPL, LTF, and SLC5A1 in the uteri was determined by radioactive in situ hybridization, and expression quantified in the endometria by quantitative real-time PCR. ANPEP localized to luminal (LE) and superficial glandular (sGE) epithelia of all heifers on days 5 and 7 only. SLC5A1 mRNA was detected in the LE and sGE on days 13 and 16 in all heifers, and expression increased on day 16 in pregnant groups. CTGF localized weakly to the LE and GE on days 5 and 7 but increased on days 13 and 16 with an increase ( P < 0.05) in CTGF expression in high P4 ( day 7) and pregnant heifers ( day 16). Both LPL and LTF localized to the GE only on days 5 and 7. In conclusion we have characterized the temporal expression pattern of these genes and modulation of their transcript abundance by P4 ( CTGF, LPL) and/or the conceptus ( CTGF, SLC5A1) likely modifies the uterine microenvironment, enhancing histotroph composition and contributing to advanced conceptus elongation.
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Song G, Chen GG, Yun JP, Lai PBS. Association of p53 with Bid induces cell death in response to etoposide treatment in hepatocellular carcinoma. Curr Cancer Drug Targets 2010; 9:871-80. [PMID: 20025574 DOI: 10.2174/156800909789760302] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Appropriate subcellular localization of proteins is crucial for regulating their functions. Both p53 and the BH3-only Bid play roles in the development and the treatment of hepatocellular carcinoma (HCC). They both participate in the cross talk of cell cycle arrest and apoptosis in response to DNA damage. However, some important issues related to their pathways are not yet resolved. Bid genomic loci contain p53-binding DNA response elements and Bid can mediate p53-dependent transactivation. Here, we showed that etoposide-induced DNA damage could significantly induce p53 and Bid nuclear export. When cells were stimulated by etoposide, p53 could, through the association with Bid, cause translocation of Bid from the nucleus to the cytoplasm and on to its ultimate location in the mitochondria. p53 was physically associated with Bid, and both p53 and Bid cooperatively promoted cell death induced by etoposide. Knockdown of Bid expression notably attenuated cell death induced by etoposide and also released p53 from the mitochondria. These findings reveal a novel mechanism by which p53 is associated with Bid in the nucleus to facilitate exportation of Bid to the mitochondria and induce apoptosis in response to etoposide-induced DNA damage in HCC.
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Yoon WJ, Moon JY, Song G, Lee YK, Han MS, Lee JS, Ihm BS, Lee WJ, Lee NH, Hyun CG. Artemisia fukudo essential oil attenuates LPS-induced inflammation by suppressing NF-kappaB and MAPK activation in RAW 264.7 macrophages. Food Chem Toxicol 2010; 48:1222-9. [PMID: 20156520 DOI: 10.1016/j.fct.2010.02.014] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Revised: 02/06/2010] [Accepted: 02/08/2010] [Indexed: 01/21/2023]
Abstract
In the present study, the chemical constituents of Artemisia fukudo essential oil (AFE) were investigated using GC-MS. The major constituents were alpha-thujone (48.28%), beta-thujone (12.69%), camphor (6.95%) and caryophyllene (6.01%). We also examined the effects of AFE on the production of nitric oxide (NO), prostaglandin E(2) (PGE(2)), tumour necrosis factor (TNF)-alpha, interleukin (IL)-1beta, and IL-6, in lipopolysaccharide (LPS)-activated RAW 264.7 macrophages. Western blotting and RT-PCR tests indicated that AFE has potent dose-dependent inhibitory effects on pro-inflammatory cytokines and mediators. We investigated the mechanism by which AFE inhibits NO and PGE(2) by examining the level of nuclear factor-kappaB (NF-kappaB) activation within the mitogen-activated protein kinase (MAPK) pathway, which is an inflammation-induced signal pathway in RAW 264.7 cells. AFE inhibited LPS-induced ERK, JNK, and p38 phosphorylation. Furthermore, AFE inhibited the LPS-induced phosphorylation and degradation of Ikappa-B-alpha, which is required for the nuclear translocations of the p50 and p65 NF-kappaB subunits in RAW 264.7 cells. Our results suggest that AFE might exert an anti-inflammatory effect by inhibiting the expression of pro-inflammatory cytokines. Such an effect is mediated by a blocking of NF-kappaB activation which consequently inhibits the generation of inflammatory mediators in RAW264.7 cells. AFE may be useful for treating inflammatory diseases.
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Song G, Zhou L. UP-2.164: Prognosis Is Poor for Young Chinese (50 Years or Younger) with Prostatic Adenocarcinoma. Urology 2009. [DOI: 10.1016/j.urology.2009.07.383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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