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Zheng CG, Xu Y, Jiang HQ, Yin YX, Zhang JH, Zhu WJ, Liang XJ, Chen MX, Ye JW, Tan LM, Luo D, Gong ST. [Clinical analysis of two cases of imported children Zika virus infection in China]. ZHONGHUA ER KE ZA ZHI = CHINESE JOURNAL OF PEDIATRICS 2017; 54:375-8. [PMID: 27143081 DOI: 10.3760/cma.j.issn.0578-1310.2016.05.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To analyze the clinical characteristics, outcome and diagnosis of two cases of imported children Zika virus infection in China. METHOD A retrospective analysis was performed on clinical characteristics, treatment and outcome of two cases of imported children with Zika virus infection in February 2016 in Enping People's Hospital of Guangdong. RESULT Two cases of children with imported Zika virus infection resided in an affected area of Venezuela, 8-year-old girl and her 6 year-old brother. The main findings on physical examination included the following manifestations: fever, rash, and conjunctivitis. The rash was first limited to the abdomen, but extended to the torso, neck and face, and faded after 3-4 d. The total number of white blood cells was not high and liver function was normal. The diagnosis of two cases of Zika virus infection was confirmed by the expert group of Guangdong Provincial Center for Disease Control and Prevention, according to the epidemiological history, clinical manifestations and Zika virus nucleic acid detection results.Treatment of Zika virus infection involves supportive care. Two Zika virus infection children had a relatively benign outcome. CONCLUSION At present, Zika virus infection in children is an imported disease in China. No specific therapy is available for this disease. Information on long-term outcomes among infants and children with Zika virus disease is limited, routine pediatric care is advised for these infants and children.
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Della Pia A, Luo D, Blackwell R, Costantini G, Martsinovich N. Molecular self-assembly of substituted terephthalic acids at the liquid/solid interface: investigating the effect of solvent. Faraday Discuss 2017; 204:191-213. [DOI: 10.1039/c7fd00112f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Self-assembly of three related molecules – terephthalic acid and its hydroxylated analogues – at liquid/solid interfaces (graphite/heptanoic acid and graphite/1-phenyloctane) has been studied using a combination of scanning tunnelling microscopy and molecular mechanics and molecular dynamics calculations. Brickwork-like patterns typical for terephthalic acid self-assembly have been observed for all three molecules. However, several differences became apparent: (i) formation or lack of adsorbed monolayers (self-assembled monolayers formed in all systems, with one notable exception of terephthalic acid at the graphite/1-phenyloctane interface where no adsorption was observed), (ii) the size of adsorbate islands (large islands at the interface with heptanoic acid and smaller ones at the interface with 1-phenyloctane), and (iii) polymorphism of the hydroxylated terephthalic acids’ monolayers, dependent on the molecular structure and/or solvent. To rationalise this behaviour, molecular mechanics and molecular dynamics calculations have been performed, to analyse the three key aspects of the energetics of self-assembly: intermolecular, substrate–adsorbate and solvent–solute interactions. These energetic characteristics of self-assembly were brought together in a Born–Haber cycle, to obtain the overall energy effects of formation of self-assembled monolayers at these liquid/solid interfaces.
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Wang S, Guan L, Luo D, Liu J, Lin H, Li X, Liu X. Gene- Gene Interaction between PPARG and APOE Gene on Late-Onset Alzheimer's Disease: A Case- Control Study in Chinese Han Population. J Nutr Health Aging 2017; 21:397-403. [PMID: 28346566 DOI: 10.1007/s12603-016-0794-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS The aim was to investigate the impact of PPARG and APOE gene single nucleotide polymorphisms (SNPs) and additional gene- gene interaction on late-onset Alzheimer's disease (LOAD) risk based on Chinese Han population. METHODS A total of 928 participants (466 males, 462 females), with a mean age of 81.3 ± 16.4 years old, were included in the study, including 460 LOAD patients and 468 normal controls participants. Logistic regression was performed to investigate association between SNP and LOAD risk and generalized multifactor dimensionality reduction (GMDR) was used to analysis the gene-gene interaction. RESULTS Logistic regression analysis showed that LOAD risk was significantly higher in carriers of G allele of the rs405509 polymorphism than those with AA (AG+ GG versus AA, adjusted OR (95%CI) =1.54(1.20-1.89), and higher in carriers of G allele of the rs1805192 polymorphism than those with CC (CG+ GG versus CC, adjusted OR (95%CI) =1.32(1.16-2.43). We also found that there was a potential gene-gene interaction between rs405509 and rs1805192. Participants with AG or GG of rs405509 and CG or GG of rs1805192 genotype have the highest AD risk, compared to participants with AA of rs405509 and CC of rs1805192 genotype, OR (95%CI) was 2.62(1.64 -3.58), after covariates adjustment. CONCLUSIONS G allele of the rs405509 of APOE and G allele of the rs1805192 of PPAR G polymorphism were associated with increased LOAD risk, and participants with AG or GG of rs405509 and CG or GG of rs1805192 genotype have the highest AD risk.
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Christiansen J, Siena S, Valtorta E, Johnson A, Murphy D, Shoemaker R, Lamoureux J, Luo D, Patel R, Hornby Z, Multani P, Maneval EC, Duca M, Debraud F. Improved efficacy response attributed to diagnostic selection – Interim results of the phase 1 experience from ALKA-372-001. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw363.86] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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80
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Luo D, Li Y, Xu XW, Du QG. Lasing from organic quasicrystal fabricated by seven- and nine-beam interference. OPTICS EXPRESS 2016; 24:12330-12335. [PMID: 27410148 DOI: 10.1364/oe.24.012330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We demonstrate mirrorless lasers based on all organic nanostructure fabricated by seven- and nine-beam interference using low contrast material, holographic polymer dispersed liquid crystals (H-PDLC). A finite-difference time-domain (FDTD) simulation is used to study the transmission of quasicrystal. The wavelengths of lasing peak are determined by both of local structure of quasicrystal that the pumping light experienced as well as the photoluminescence of laser dye doped. Features of mirrorless laser from quasicrystal based on H-PDLC include directional light source, low threshold, simple fabrication process, low cost and tunability. These properties make H-PDLC photonic quasicrystal promising for a new type of all organic miniature lasers.
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Xu J, Lu Q, Huang J, Hao F, Sun Q, Fang H, Gu J, Dong X, Zheng J, Luo D, Li F, Wang G, Gu H, Tian H, Yang H, Xi L, Li M, Zheng M, Wu Y, Tu Y, He Y, Zhao G, Sheng W, Li J, Hamedani A. A multicentre, randomized, single‐blind comparison of topical clindamycin 1%/benzoyl peroxide 5% once‐daily gel versus clindamycin 1% twice‐daily gel in the treatment of mild to moderate acne vulgaris in Chinese patients. J Eur Acad Dermatol Venereol 2016; 30:1176-82. [PMID: 27075705 DOI: 10.1111/jdv.13622] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 01/06/2016] [Indexed: 12/01/2022]
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Luo D, Ren H, Li T, Lian K, Lin D. Rapamycin reduces severity of senile osteoporosis by activating osteocyte autophagy. Osteoporos Int 2016; 27:1093-1101. [PMID: 26395886 DOI: 10.1007/s00198-015-3325-5] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Accepted: 09/14/2015] [Indexed: 12/22/2022]
Abstract
SUMMARY Osteocyte is the orchestrator of bone remolding and decline in osteocyte autophagy is involved in senile osteoporosis. Our results suggested that rapamycin, at least in part by activating osteocyte autophagy, reduced the severity of age-related bone changes in trabecular bone of old male rats. INTRODUCTION Previous literatures have showed that osteocyte is the orchestrator of bone remolding and age-related decline in osteocyte number is associated with senile osteoporosis. Autophagy is an important cellular protective mechanism which can preserve osteocyte viability and failure of autophagy in osteocyte with age has been linked to senile osteoporosis. The purpose of this study was to explore whether rapamycin, one activator of autophagy, has protective effects on senile osteoporosis through inducing osteocyte autophagy. METHODS Fifty-two 24-month-old male Sprague-Dawley (SD) rats were randomly divided into two groups. Rapamycin (1 mg/kg weight/day) or DMSO vehicle control was administered intraperitoneally for 12 weeks. BMD and bone microstructure were determined by Micro-CT. Fluorochrome labeling of the bones was performed to measure the mineral apposition rate (MAR). TRAP staining was performed to evaluate osteoclast number. The plasma levels of bone turnover markers were also analyzed. The effects of rapamycin on osteocyte autophagy were determined by immunohistochemistry, Western blot, and q-PCR. TUNEL was used to determine the prevalence of osteocyte apoptosis. RESULTS Micro-CT evaluation demonstrated that rapamycin had a protective effect on age-related bone loss in trabecular bone. Besides, rapamycin resulted in an obvious increase of MAR and a decrease of osteoclast number in contrast to the control group. Furthermore, rapamycin also induced autophagy in osteocyte demonstrated by increased LC3-positive osteocyte and increased LC3 turnover. In addition, rats treated with rapamycin exhibited decreased apoptosis of osteocyte determined by TUNEL. CONCLUSIONS These results suggested that rapamycin, at least in part by activating osteocyte autophagy, reduced the severity of age-related bone changes in trabecular bone of old male rats. Therefore, rapamycin might be a feasible therapeutic approach for senile osteoporosis.
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Drilon A, Li G, Dogan S, Gounder M, Shen R, Arcila M, Wang L, Hyman DM, Hechtman J, Wei G, Cam NR, Christiansen J, Luo D, Maneval EC, Bauer T, Patel M, Liu SV, Ou SHI, Farago A, Shaw A, Shoemaker RF, Lim J, Hornby Z, Multani P, Ladanyi M, Berger M, Katabi N, Ghossein R, Ho AL. What hides behind the MASC: clinical response and acquired resistance to entrectinib after ETV6-NTRK3 identification in a mammary analogue secretory carcinoma (MASC). Ann Oncol 2016; 27:920-6. [PMID: 26884591 PMCID: PMC4843186 DOI: 10.1093/annonc/mdw042] [Citation(s) in RCA: 239] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 01/21/2016] [Indexed: 01/05/2023] Open
Abstract
Here, we describe the dramatic response of a patient with an ETV6-NTRK3-driven mammary analogue secretory carcinoma to treatment with a pan-Trk inhibitor, and the development of acquired resistance linked to a novel NTRK3 mutation that interferes with drug binding. This case emphasizes how molecular profiling can identify therapies for rare diseases and dissect mechanisms of drug resistance. Background Mammary analogue secretory carcinoma (MASC) is a recently described pathologic entity. We report the case of a patient with an initial diagnosis of salivary acinic cell carcinoma later reclassified as MASC after next-generation sequencing revealed an ETV6-NTRK3 fusion. Patients and methods This alteration was targeted with the pan-Trk inhibitor entrectinib (Ignyta), which possesses potent in vitro activity against cell lines containing various NTRK1/2/3 fusions. Results A dramatic and durable response was achieved with entrectinib in this patient, followed by acquired resistance that correlated with the appearance of a novel NTRK3 G623R mutation. Structural modeling predicts that this alteration sterically interferes with drug binding, correlating to decreased sensitivity to drug inhibition observed in cell-based assays. Conclusions This first report of clinical activity with TrkC inhibition and the development of acquired resistance in an NTRK3-rearranged cancer emphasize the utility of comprehensive molecular profiling and targeted therapy for rare malignancies (NCT02097810).
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Xu XW, Zhang XW, Luo D, Dai HT. Low voltage polymer-stabilized blue phase liquid crystal reflective display by doping ferroelectric nanoparticles. OPTICS EXPRESS 2015; 23:32267-32273. [PMID: 26699017 DOI: 10.1364/oe.23.032267] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Low driving voltage is achieved in full color reflective display based on polymer-stabilized blue phase liquid crystal (PS-PBLC), by doping a small amount of ferroelectric nanoparticles. Both reflectance spectra of PS-PBLC with and without BaTiO₃ ferroelectric nanoparticles are studied under different applied external voltages. Superior to PS-PBLC without ferroelectric nanoparticles, the vertical driving electric fields of PS-PBLC with 0.4 wt.% BaTiO₃ ferroelectric nanoparticles are dramatically reduced by more than 70% for red, green and blue cells. The proposed approach would accelerate the practical application of full color PS-BPLC reflective display.
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Luo D. 1108 AKR1B10, a new prognostic indicator in nasopharyngeal carcinoma. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30490-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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86
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Siena S, Drilon A, Sai-Hong Ou I, Farago A, Patel M, Bauer T, Hong D, Liu S, Lee J, Patel R, Schechet L, Luo D, Chow Maneval E, Multani P, De Braud F. 29LBA Entrectinib (RXDX-101), an oral pan-Trk, ROS1, and ALK inhibitor in patients with advanced solid tumors harboring gene rearrangements. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31947-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Wang X, Shen Y, Zhao Y, Li Z, Gou H, Cao D, Yang Y, Qiu M, Li Q, Liu J, Yi C, Liao Z, Luo D, Xu F, Bi F. Adjuvant intensity-modulated radiotherapy (IMRT) with concurrent paclitaxel and cisplatin in cervical cancer patients with high risk factors: A phase II trial. Eur J Surg Oncol 2015; 41:1082-8. [DOI: 10.1016/j.ejso.2015.04.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 04/20/2015] [Accepted: 04/25/2015] [Indexed: 11/26/2022] Open
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Snow WM, Anderson E, Barrón-Palos L, Bass CD, Bass TD, Crawford BE, Crawford C, Dawkins JM, Esposito D, Fry J, Gardiner H, Gan K, Haddock C, Heckel BR, Holley AT, Horton JC, Huffer C, Lieffers J, Luo D, Maldonado-Velázquez M, Markoff DM, Micherdzinska AM, Mumm HP, Nico JS, Sarsour M, Santra S, Sharapov EI, Swanson HE, Walbridge SB, Zhumabekova V. A slow neutron polarimeter for the measurement of parity-odd neutron rotary power. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2015; 86:055101. [PMID: 26026552 DOI: 10.1063/1.4919412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 04/19/2015] [Indexed: 06/04/2023]
Abstract
We present the design, description, calibration procedure, and an analysis of systematic effects for an apparatus designed to measure the rotation of the plane of polarization of a transversely polarized slow neutron beam as it passes through unpolarized matter. This device is the neutron optical equivalent of a crossed polarizer/analyzer pair familiar from light optics. This apparatus has been used to search for parity violation in the interaction of polarized slow neutrons in matter. Given the brightness of existing slow neutron sources, this apparatus is capable of measuring a neutron rotary power of dϕ/dz = 1 × 10(-7) rad/m.
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Kang XJ, Shi XH, Chen WJ, Pu XM, Sun ZZ, Halifu Y, Wu XJ, Yu SR, Liu WX, Liang JQ, Luo D, Ren DY. Analysis ofKITmutations and c-KIT expression in Chinese Uyghur and Han patients with melanoma. Clin Exp Dermatol 2015; 41:81-7. [PMID: 25917463 DOI: 10.1111/ced.12659] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2014] [Indexed: 11/29/2022]
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90
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Zeng B, Huang X, Huang LK, Zhang J, Yan HD, Luo D, Liang H, Yuan Y. Optimization of SCoT-PCR reaction system in Dactylis glomerata by orthogonal design. GENETICS AND MOLECULAR RESEARCH 2015; 14:3052-61. [PMID: 25966069 DOI: 10.4238/2015.april.10.15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The effects of 5 factors (template DNA, Mg(2+), dNTPs, Taq DNA polymerase, and primer) on the polymerase chain reaction (PCR) were investigated to optimize the start codon targeted polymor-phism (SCoT)-PCR system of Dactylis glomerata L., using an orthogo-nal design L16 (4(5)). A suitable SCoT-PCR system for D. glomerata was established; the 20 μL reaction volume contained 3.0 mM Mg(2+), 0.2 mM dNTPs, 1.0 U Taq DNA polymerase, 0.2 μM primer, 20 ng tem-plate DNA, and 2 μL 10X buffer. Each factor had a different effect on the amplification reaction, and the concentration of dNTPs had the larg-est effect on the SCoT-PCR system. We tested 10 orchardgrass samples to determine and verify the stability of the reaction system. The results showed that amplified bands from diverse materials were clear, stable, and rich in polymorphisms, indicating that the optimized system was very stable.
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Pan L, Ren F, Rong M, Dang Y, Luo Y, Luo D, Chen G. Correlation between down-expression of miR-431 and clinicopathological significance in HCC tissues. Clin Transl Oncol 2015; 17:557-63. [PMID: 25775917 DOI: 10.1007/s12094-015-1278-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 01/22/2015] [Indexed: 01/25/2023]
Abstract
BACKGROUND AND AIMS Researches have shown that miRNAs have been proposed as novel diagnostic biomarkers for classification and prognostic stratification of HCC. However, whether or not miR-431 contributes to the progression of HCC remains unknown. Therefore, we aimed to investigate the clinicopathological significance of miR-431 in HCC. METHODS MiR-431 expression in 95 HCC cases and corresponding adjacent non-cancerous tissues was evaluated by quantitative reverse transcription polymerase chain reaction (qRT-PCR). Furthermore, statistical analysis was performed to identify the correlations between expression of miR-431 and a variety of clinicopathological parameters and patient recurrence. The area under the receiver operating characteristic curve (AUC) was used to evaluate the accuracy of miR-431 as a biomarker for HCC diagnosis and prediction of disease deterioration. RESULTS MiR-431 was markedly down-regulated in the HCC samples (1.1885 ± 0.75867) compared with corresponding adjacent tumor tissues (1.7957 ± 0.89333, P < 0.001). The AUC of low miR-431 expression to diagnose HCC was 0.668 (95 % CI 0.592-0.744, P < 0.001). MiR-431 down-expression was correlated with multiple malignant characteristics, including lymph node metastasis (r = -0.455, P < 0.001), clinical TNM stage (r = -0.223, P = 0.030), MTDH (r = -0.292, P = 0.006), vaso-invasion (r = -0.204, P = 0.047), MVD (r = -0.281, P = 0.006) and HCV (r = 0.215, P = 0.037). Additionally, the recurrent time of lower miR-431 expression group was 56.602 ± 3.914 months, much longer than that in the high expression group (50.009 ± 2.731 months), however, no significant difference was noted (χ (2) = 0.005, P = 0.943). CONCLUSIONS The down-expression of miR-431 is partially responsible for a series of clinicopathological features which may be tightly correlated with the progression of HCC. Thus, expression of miR-431 may be proposed as a new factor in association with the progression of HCC.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Carcinoma, Hepatocellular/complications
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/pathology
- Cohort Studies
- Down-Regulation
- Female
- Gene Expression Regulation, Neoplastic
- Hepatitis C, Chronic/complications
- Hepatitis C, Chronic/genetics
- Humans
- Liver Neoplasms/complications
- Liver Neoplasms/genetics
- Liver Neoplasms/pathology
- Lymph Nodes/pathology
- Lymphatic Metastasis
- Male
- MicroRNAs/genetics
- Middle Aged
- Neoplasm Staging
- Neoplasms, Multiple Primary/complications
- Neoplasms, Multiple Primary/genetics
- Neoplasms, Multiple Primary/pathology
- Prospective Studies
- Reverse Transcriptase Polymerase Chain Reaction
- Tumor Burden
- alpha-Fetoproteins/metabolism
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Bi Q, Li JY, Li XQ, Li Q, Luo D, Qiao QB. Impact of Intracranial Artery Disease and Prior Cerebral Infarction on Central Nervous System Complications After Off-Pump Coronary Artery Bypass Grafting. NEUROPHYSIOLOGY+ 2015. [DOI: 10.1007/s11062-015-9480-7] [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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93
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Dierynck I, Ghys A, Witek J, Luo D, Janssen K, Daems B, Picchio G, Buti M, De Meyer S. Incidence of virological failure and emergence of resistance with twice-daily vs every 8-h administration of telaprevir in the OPTIMIZE study. J Viral Hepat 2014; 21:835-42. [PMID: 25402544 DOI: 10.1111/jvh.12347] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 09/23/2014] [Indexed: 12/20/2022]
Abstract
The OPTIMIZE study demonstrated noninferior efficacy between telaprevir (TVR) twice daily (bid) vs every 8-h (q8h) administration. This analysis compared the selective pressure of both dosing regimens by characterisation of the hepatitis C virus (HCV) variants emerging in genotype 1 (G1) HCV-infected patients who did not achieve sustained virological response (SVR). HCV NS3•4A population sequencing was performed at baseline and time of failure (viral breakthrough, stopping rule or relapse). TVR-resistant variants were classified by fold change in inhibitory concentration (IC50 ). Baseline TVR-resistance was low (<5%) and did not preclude achieving SVR in either arm. The proportion of patients with TVR-resistant variants at time of failure was similar in the bid (15%) and q8h (17%) dosing arms. The majority of variants and virological failures occurred in G1a patients, and mutations V36M, R155K and R155T (G1a), and V36A, T54A and A156S (G1b) were significantly enriched in both treatment arms. The number and type of emerging TVR-resistant variants in non-SVR patients were comparable between treatment arms and were consistent with previous observations. No differences in viral resistance profiles were observed between TVR-based treatment arms in non-SVR patients, indicating a similar selective pressure of TVR bid and q8h dosing.
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Pham K, Luo D, Siemann D, Law B, Reynolds B, Hothi P, Foltz G, Harrison J. AI-24 * VEGFR INHIBITORS ENHANCE PROGRESSION OF GLIOBLASTOMA BY UPREGULATING CXCR4 IN A TGF R SIGNALING-DEPENDENT MANNER. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou238.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kong XD, Shi HR, Liu N, Wu QH, Xu XJ, Zhao ZH, Lu N, Li-Ling J, Luo D. Mutation analysis and prenatal diagnosis for three families affected by isolated methylmalonic aciduria. GENETICS AND MOLECULAR RESEARCH 2014; 13:8234-40. [PMID: 25299208 DOI: 10.4238/2014.october.8.5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Isolated methylmalonic acidemia (MMA) is a genetically heterogeneous disorder caused mainly by deficiency of methylmalonyl-CoA mutase. In the present study, we analyzed MUT gene mutations in 3 Chinese couples with a birth history of isolated MMA. We also provided prenatal diagnoses for the detected mutation. Exons and exon-intron boundaries of the MUT gene were analyzed by polymerase chain reaction and direct sequencing. Prenatal genetic diagnoses were performed by chorionic villus sampling after the genotypes of parents were determined. Six heterozygous mutations in the MUT gene were identified in the 3 families, including c.1880A>G (p.H627R) and IVS9-1G>A for family 1, c.1741C>T (p.R581X) and c.729insTT (p.D244fX39) for family 2, and c.616C>T (p.Q206X) and c.1280G>A (p.G427D) for family 3. Among these, c.616C>T (p.Q206X), c.1280G>A (p.G427D), IVS9-1G>A, and c.1741C>T (p.R581X) were novel mutations. These mutations were not detected in 100 normal controls. The fetus in pedigree 3 was free of the mutations carried by the parents, while the fetuses in pedigrees 1 and 2 were heterozygous mutation carriers. All 3 families decided to continue with their pregnancies and the neonates did not show any symptoms of MMA after birth. Our results indicated that mutations in the MUT gene are the primary cause of isolated MMA, and that most mutations were novel. For families with early-onset isolated MMA, direct sequencing of the MUT gene is crucial for genetic counseling, prenatal diagnosis, and identification of carriers.
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De Braud F, Pilla L, Niger M, Damian S, Bardazza B, Martinetti A, Pelosi G, Marrapese G, Palmeri L, Cerea G, Valtorta E, Veronese S, Sartore-Bianchi A, Ardini E, Martignoni M, Isacchi A, Pearson P, Luo D, Freddo J, Siena S. Rxdx-101, an Oral Pan-Trk, Ros1, and Alk Inhibitor, in Patients with Advanced Solid Tumors with Relevant Molecular Alterations. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu331.8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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97
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Liang LG, Xie J, Luo D. Development of a rapid cyprinid herpesvirus 2 detection method by loop-mediated isothermal amplification. Lett Appl Microbiol 2014; 59:432-7. [PMID: 24935791 DOI: 10.1111/lam.12296] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 06/10/2014] [Accepted: 06/11/2014] [Indexed: 11/28/2022]
Abstract
Cyprinid herpesvirus 2 (CyHV2) is a pathogen that causes severe disease and high mortality in goldfish and Prussian carp. We developed a six primer loop-mediated isothermal amplification (LAMP) assay targeting the intercapsomeric triplex protein gene. CyHV-2 DNA was 10-fold serially diluted (10(8)-10(0) copies μl(-1)) and was used as the template to determine primer sensitivity. LAMP assays were performed with DNA templates from other pathogens to determine specificity. The LAMP assay had an unequivocal detection limit of 10 copies μl(-1), which was 100 times lower than that of the polymerase chain reaction. Other pathogen strains were not amplified by the LAMP primers, indicating good specificity. SYBR Green I was added to visually detect the amplification products. Assay applicability was evaluated in 120 samples of Carassius auratus gibelio, and a positive rate of 92·5% was obtained. In conclusion, a conventional LAMP assay has high convenience, rapidity, sensitivity and specificity for detecting CyHV-2 in infected aquatic organisms. Significance and impact of the study: Herpesviral haematopoietic necrosis, caused by cyprinid herpesvirus 2 (CyHV-2), is a severe disease of goldfish and Prussian carp associated with high mortality. We developed a loop-mediated isothermal amplification (LAMP) assay to detect CyHV-2 at relatively low plasmid DNA copy levels. The results show that the LAMP assay has a number of advantages (simple, sensitive, rapid and specific) over the conventional polymerase chain reaction and can be applied in the laboratory and field. Particularly, the method is highly applicable to facilitate surveillance and early diagnosis of CyHV-2.
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Li J, Qin S, Xu J, Xiong J, Wu C, Bai Y, Liu W, Tong J, Liu Y, Xu R, Wang Z, Wang Q, Ouyang X, Yang Y, Ba Y, Liang J, Lin X, Luo D, Zheng R, Wu K, Sun G, Wang L, Zheng L, Guo H, Wu J, Xu N, Yang J, Zhang H, Cheng Y, Wang N, Chen L, Fan Z, Yu H. Phase III Study of Apatinib in Advanced Gastric Cancer: A Randomized, Double-Blind, Placebo-Controlled Trial. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu193.29] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zhong H, Song Z, Chen W, Li H, He L, Gao T, Fang H, Guo Z, Xv J, Yu B, Gao X, Xie H, Gu H, Luo D, Chen X, Lei T, Gu J, Cheng B, Duan Y, Xv A, Zhu X, Hao F. Chronic urticaria in Chinese population: a hospital-based multicenter epidemiological study. Allergy 2014; 69:359-64. [PMID: 24354882 DOI: 10.1111/all.12338] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/28/2013] [Indexed: 02/05/2023]
Abstract
BACKGROUND The epidemiologic profiles of chronic urticaria (CU) vary considerably among regions, and few such data are available from China. METHODS We performed a multicenter open questionnaire investigation about the clinical and laboratory features of CU, defined as recurrent wheals with/without angioedema lasting for ≥6 weeks, among 3027 patients. RESULTS Female preponderance was observed (female/male ratio, 1.46 : 1). The mean age at diagnosis was 34.7 ± 13.8 years, and the mean disease duration was 18.5 ± 46.1 months (range, 1.5-127 months). Patients were classified as having chronic spontaneous urticaria (CSU, 61.0% of patients), physical urticaria (PU, 26.2%), or other urticaria types (OU, 2.3%). Nocturnal attacks were reported by 60% of cases. The Urticaria Activity Score (UAS) in patients with CSU was 3.8 ± 1.4. The mean Dermatology Life Quality Index was 7.3 ± 3.4 (range 0-30). Induction or exacerbation of wheals with alcohol drinking was reported by 55.7% of patients. Chronic hepatitis B was less prevalent in our CU patients compared with the general Chinese population (2.7% vs 7%). Positive autologous serum skin tests (ASSTs) were observed in 66.9% of patients. Patients with positive ASST had higher UAS, greater angioedema frequencies, longer disease durations, and poorer QoL compared with patients with negative ASST (P < 0.05). CONCLUSION In this Chinese population, CU usually affected youth, and CSU was the most common subtype. Autoreactivity and alcohol consumption were the top two triggers for CU, whereas latent infectious and chronic inflammatory diseases were not as common as in previous reports.
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Luo D, Dai HT, Sun XW. Polarization-independent electrically tunable/switchable Airy beam based on polymer-stabilized blue phase liquid crystal. OPTICS EXPRESS 2013; 21:31318-31323. [PMID: 24514706 DOI: 10.1364/oe.21.031318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Because of their non-diffraction and freely acceleration during propagation, finite energy Airy beams are interesting for application such as optical manipulation, plasma channel generation and optical vortex generation. Especially interesting are tunable/switchable Airy beams, in which the Airy beam tuning by electric field, temperature or optical intensity can be realized. Here we experimentally demonstrate polarization-independent, electrically tunable/switchable Airy beam based on polymer-stabilized blue phase liquid crystals with wide working temperature range and fast response time through a structure called vertical field driven mode.
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