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Qiu Y, Tang Y, Zhang J, Yi X, Zhong X, Liu G, Xu H, Lei Y. A retrospective analysis of seven patients with acquired immunodeficiency syndrome and pharyngeal and/or laryngeal Talaromyces marneffei infection. Clin Otolaryngol 2017; 42:1061-1066. [PMID: 28130931 DOI: 10.1111/coa.12838] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/23/2017] [Indexed: 11/29/2022]
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Giugliani R, Harmatz P, Jones S, Mendelsohn N, Vellodi A, Qiu Y, Hendriksz C, Vijayaraghavan S, Whiteman D, Pano A. Evaluation of impact of anti-idursulfase antibodies during long-term idursulfase enzyme replacement therapy in mucopolysaccharidosis II patients. Mol Genet Metab Rep 2017; 12:2-7. [PMID: 28243577 PMCID: PMC5320046 DOI: 10.1016/j.ymgmr.2017.01.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 01/31/2017] [Accepted: 01/31/2017] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES This 109-week, nonrandomized, observational study of mucopolysaccharidosis II (MPS II) patients already enrolled in the Hunter Outcome Survey (HOS) (NCT00882921), assessed the long-term immunogenicity of idursulfase, and examined the effect of idursulfase-specific antibody generation on treatment safety (via infusion-related adverse events [IRAEs]) and pharmacodynamics (via urinary glycosaminoglycans [uGAGs]). METHODS Male patients ≥ 5 years, enrolled in HOS regardless of idursulfase treatment status were eligible. Blood/urine samples for anti-idursulfase antibody testing and uGAG measurement were collected every 12 weeks. RESULTS Due to difficulties in enrolling treatment-naïve patients, data collection was limited to 26 enrolled patients of 100 planned patients (aged 5.1-35.5 years) all of whom were non-naïve to treatment. Fifteen (58%) patients completed the study. There were 11/26 (42%) seropositive patients at baseline (Ab +), and 2/26 (8%) others developed intermittent seropositivity by Week 13. A total of 9/26 patients (35%) had ≥ 1 sample positive for neutralizing antibodies. Baseline uGAG levels were low due to prior idursulfase treatment and did not change appreciably thereafter. Ab + patients had persistently higher uGAG levels at entry and throughout the study than Ab - patients. Nine of 26 (34%) patients reported IRAEs. Ab + patients appeared to have a higher risk of developing IRAEs than Ab - patients. However, the relative risk was not statistically significant and decreased after adjustment for age. CONCLUSIONS 50% of study patients developed idursulfase antibodies. Notably Ab + patients had persistently higher average uGAG levels. A clear association between IRAEs and antibodies was not established.
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Bao H, Yan P, Qiu Y, Liu Z, Zhu F. Coronal imbalance in degenerative lumbar scoliosis: Prevalence and influence on surgical decision-making for spinal osteotomy. Bone Joint J 2017; 98-B:1227-33. [PMID: 27587525 DOI: 10.1302/0301-620x.98b9.37273] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 05/06/2016] [Indexed: 11/05/2022]
Abstract
AIMS There is a paucity of information on the pre-operative coronal imbalance in patients with degenerative lumbar scoliosis (DLS) and its influence on surgical outcomes. PATIENTS AND METHODS A total of 284 DLS patients were recruited into this study, among whom 69 patients were treated surgically and the remaining 215 patients conservatively Patients were classified based on the coronal balance distance (CBD): Type A, CBD < 3 cm; Type B, CBD > 3 cm and C7 Plumb Line (C7PL) shifted to the concave side of the curve; Type C, CBD > 3 cm and C7PL shifted to the convex side. RESULTS A total of 99 of the 284 (34.8%) patient presented with a pre-operative coronal imbalance (mean CBD: 48.5, standard deviation 18.7 mm). More patients with a Type B malalignment were observed than with a Type C malalignment (62 versus 37). A total of 21 pf the 69 (30.4%) surgically treated patients had a post-operative coronal imbalance, which was found to be more prevalent in Type C patients (p < 0.001). At follow-up, less improvement was observed in terms of Short Form-36 Physical Component Score and visual analogue score for back pain (p = 0.034 and 0.025, respectively) in Type C patients. CONCLUSION This study shows that patients with Type C coronal malalignment may be at greater risk of post-operative coronal imbalance following posterior osteotomy. Cite this article: Bone Joint J 2016;98-B:1227-33.
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Wang Y, Hollis-Hansen K, Ren X, Qiu Y, Qu W. Do environmental pollutants increase obesity risk in humans? Obes Rev 2016; 17:1179-1197. [PMID: 27706898 DOI: 10.1111/obr.12463] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 07/01/2016] [Accepted: 07/31/2016] [Indexed: 02/01/2023]
Abstract
OBJECTIVES Obesity has become a global epidemic and threat to public health. A good understanding of the causes can help attenuate the risk and spread. Environmental pollutants may have contributed to the rising global obesity rates. Some research reported associations between chemical pollutants and obesity, but findings are mixed. This study systematically examined associations between chemical pollutants and obesity in human subjects. METHODS Systematic review of relevant studies published between 1 January 1995 and 1 June 2016 by searching PubMed and MEDLINE®. RESULTS Thirty-five cross-sectional (n = 17) and cohort studies (n = 18) were identified that reported on associations between pollutants and obesity measures. Of them, 16 studies (45.71%) reported a positive association; none reported a sole inverse association; three (8.57%) reported a null association only; six (17.14%) reported both a positive and null association; seven (20.00%) reported a positive and inverse association; and three studies (8.57%) reported all associations (positive, inverse and null). Most studies examined the association between multiple different pollutants, different levels of concentration and in subsamples, which results in mixed results. Thirty-three studies reported at least one positive association between obesity and chemicals, such as polychlorinated biphenyls, biphenyl A, dichlorodiphenyltrichloroethane, dichlorodiphenyldichloroethylene and more. Certain chemicals, such as biphenyl A, were more likely to have high ORs ranging from 1.0 to 3.0, whereas highly chlorinated polychlorinated biphenyls were more likely to have negative ORs. Effects of chemicals on the endocrine system and obesity might vary by substance, exposure level, measure of adiposity and subject characteristics (e.g. sex and age). CONCLUSIONS Accumulated evidences show positive associations between pollutants and obesity in humans. Future large, long-term, follow-up studies are needed to assess impact of chemical pollutants on obesity risk and related mechanisms.
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Chen F, He BC, Yan LJ, Qiu Y, Lin LS, Cai L. Influence of oral hygiene and its interaction with standard of education on the risk of oral cancer in women who neither smoked nor drank alcohol: a hospital-based, case-control study. Br J Oral Maxillofac Surg 2016; 55:260-265. [PMID: 27908460 DOI: 10.1016/j.bjoms.2016.11.316] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 11/15/2016] [Indexed: 01/07/2023]
Abstract
We know of only limited data about the role of oral hygiene and the risk of oral cancer with different standards of education. The aim of this study was to assess the association between oral hygiene and risk of oral cancer, with stratification by standard of education, in Chinese women. We organised a case-control study with 250 women with oral cancer and 996 age-matched controls in Fujian, China. Data were collected by personal interview using a structured questionnaire. We used unconditional logistic regression with stratification by educational standard to estimate the odds ratios (OR) and 95% CI. Tooth-brushing twice a day or more was inversely related to the risk of oral cancer in women with high school education or above (OR 0.50; 95% CI 0.25 to 0.98), but not in those who were illiterate or had primary-middle school education. Wearing dentures showed an increased risk only in less well-educated women: the OR were 2.23 (95% CI 1.14 to 4.34) for the illiterate and 1.68 (95% CI 1.08 to 2.62) for the primary-middle school group. The loss of more than five teeth and oral ulceration were associated with increased risks of oral cancer in all three groups. There was also a multiplicative interaction between oral hygiene and standard of education for risk of oral cancer (p=0.001). Our results suggest that oral hygiene seems to have a critical role in the risk of oral cancer in Chinese women, but this effect may be modified by their educational standard.
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Qiu Y, Hu HD, Hu BQ, Chen XY, Xu PY, Cui L, Li P, Liu C, Li L. [Dihydrotestosterone inhibits foam cell formation via a lectin-like ox-low-density lipoprotein receptor mediated mechanism in J774.1 cell line]. ZHONGHUA YI XUE ZA ZHI 2016; 96:3403-3407. [PMID: 27866534 DOI: 10.3760/cma.j.issn.0376-2491.2016.42.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of dihydrotestosterone (DHT) on lectin-like ox- low-density lipoprotein (LDL) receptor(LOX-1)expression and foam cell formation in the female macrophage cell line J774.1. Methods: In cultured J774.1 cells, after pretreated with DHT at concentrations of 1×10-9 mol/L and 1×10-8 mol/L, ox-LDL-induced LOX-1 expression and foam cell formation were investigated by quantitative real-time PCR, Western blotting, and oil-red O staining. Results: DHT at concentrations of 1×10-9 mol/L and 1×10-8 mol/L inhibited ox-LDL-induced LOX-1 mRNA (2.81±0.46 and 2.29±0.21 vs 4.71±0.31, both P<0.01) and protein expression (1.35±0.06 and 1.09±0.04 vs 1.75±0.11, both P<0.05). The effect was partly reversed by the androgen receptor (AR) blocker flutamide (87.6%, P=0.004). Oil-red O staining also revealed that DHT at concentrations of 1×10-9 mol/L and 1×10-8 mol/L suppressed ox-LDL-induced foam cell formation as quantified by the number of foam cells per high-power field (HPF) (36.0±3.0 and 29.1±1.3 vs 45.9±3.7, both P<0.05) and by the area of oil-red O stained particles per HPF (7 983±1 035 and 4 060±390 vs 14 750±2 489, both P<0.05). Conclusion: DHT at concentrations of 1×10-9 mol/L and 1×10-8 mol/L decreases LOX-1 expression and foam cell formation via AR.
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Zheng Y, Qiu Y, Gunderson JEC, Schulman BA. Production of Human ATG Proteins for Lipidation Assays. Methods Enzymol 2016; 587:97-113. [PMID: 28253979 DOI: 10.1016/bs.mie.2016.09.055] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Humans express several orthologs of yeast Atg8, in the LC3 and GABARAP families, which play crucial roles in autophagy through their covalent ligation to lipids, typically phosphatidylethanolamine (PE), in a process known as lipidation. Lipidation of LC3 and GABARAP regulates numerous facets of the autophagy process, including regulating expansion of the phagophore membrane, recruiting selected cargoes for degradation, and providing an autophagosome membrane-bound platform mediating dynamic interactions with other regulatory proteins. LC3 and GABARAP are families of related ubiquitin-like proteins (UBLs) (referred to here collectively as LC3/GABARAP), and their lipidation involves a divergent UBL conjugation cascade including ATG7, ATG3, and ATG12~ATG5-ATG16L1 acting as E1, E2, and E3 enzymes, respectively. ATG7 initiates LC3/GABARAP conjugation by catalyzing their C-terminal adenylation and conjugation to the catalytic cysteine of ATG3. Ultimately, the ATG12~ATG5-ATG16L1 complex catalyzes LC3/GABARAP ligation to a primary amino group on PE or other acceptor lipids. This chapter describes methods for expressing and purifying human LC3 or GABARAP, ATG7, ATG3, and the ATG12~ATG5-ATG16L1 complex for in vitro studies of LC3/GABARAP lipidation.
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Qiu Y, Zheng Y, Taherbhoy AM, Kaiser SE, Schulman BA. Crystallographic Characterization of ATG Proteins and Their Interacting Partners. Methods Enzymol 2016; 587:227-246. [PMID: 28253958 DOI: 10.1016/bs.mie.2016.09.058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Autophagosome formation and specific substrate recruitment during autophagy require ligation of the ubiquitin-like protein (UBL) Atg8 to the head group of the lipid phosphatidylethanolamine. Atg8 lipidation is mediated by distinctive UBL cascades involving autophagy-specific E1, E2, and E3 enzymes that differ substantially in sequence from components of other UBL conjugation cascades. Structural studies are important for elucidating the roles of Atg proteins that regulate multiple steps involved in autophagy. This chapter describes methods to prepare and crystallize selected proteins and complexes involved in autophagy UBL conjugation pathways, as a guide for strategies for structural and biochemical characterization of Atg proteins.
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Chen W, Gentile T, Ye Q, Kirchhoff A, Watson S, Rodriguez-Rivera J, Qiu Y, Broholm C. Recent advancements of wide-angle polarization analysis with3He neutron spin filters. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1742-6596/746/1/012016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Zhang L, Qiu Y, Yi B, Ni L, Zhang L, Taxi P, Li H, Zhang Q, Wang W, Liu Z, Li L, Zhao L, Wang H, Sun B. Mortality of neonatal respiratory failure from Chinese northwest NICU network. J Matern Fetal Neonatal Med 2016; 30:2105-2111. [PMID: 27651118 DOI: 10.1080/14767058.2016.1238894] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Lv XS, Qiu Y, Wang ZY, Jiang GM, Chen YT, Xu XH, Hurt RH. Aerosol synthesis of phase-controlled iron-graphene nanohybrids through FeOOH nanorod intermediates. ENVIRONMENTAL SCIENCE. NANO 2016; 3:1215-1221. [PMID: 28133538 PMCID: PMC5260819 DOI: 10.1039/c6en00178e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Iron-based nanoparticles form the basis for a host of sustainable alternative technologies based on this earth-abundant, low-toxicity element that can adopt a variety of oxidation states, crystal phases, and functions. Control of size, shape, and phase stability is a challenge for many nano-iron-based technologies, especially those involving Fe0 that is susceptible to oxidation under ambient conditions. This article presents a continuous method for hybridizing Fe-based nanoparticles with carbon in the form of graphene-encapsulated Fe-based particles with core-shell symmetry that allows flexible control of iron particle size, shape, and phase stability. The method uses FeOOH nanorods and graphene oxide as precursors, and subjects them to an aerosol-phase microdroplet drying and annealing process to yield a range of Fe/C nanohybrids whose structure can be controlled through adjustment of aerosol process temperature and post-synthesis thermal treatment conditions. We demonstrate that FeOOH nanorods can be successfully encapsulated in graphene, and transform during annealing into encapsulated Fe3O4 or Fe0 nanoparticles by reductive fragmentation, where the graphene nanosack acts as a carbothermic reductant. The hybrids are characterized by vibrating sample magnetometry and Cr(VI) reduction rates in aqueous media. The Fe0-graphene hybrids show high activity, good stability, and good recyclability in aqueous Cr(VI) removal due to the effect of graphene encapsulation. The present work suggests this rapid and continuous synthesis method can produce stable Fe-based materials, and can be extended to other metal systems, where graphene encapsulation can induce in situ reduction of metal oxide precursors into zero-valent metal-graphene hybrids.
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Wang J, Qiu Y, Shi NW, Zhao JN, Wang YC, Jiang H, Qian HB. microRNA-21 mediates the TGF-β1-induced migration of keratinocytes via targeting PTEN. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2016; 20:3748-3759. [PMID: 27735045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE The aim of this study was to investigate the molecular mechanism into the keratinocyte migration, which is promoted by Transforming growth factor-β1 (TGF-β1) during wound healing. MATERIALS AND METHODS In the present study, we investigated the regulation by TGF-β1 on phosphatase and tensin homolog (PTEN) expression, and microRNA-21 (miR-21) level with real-time quantitative PCR or/and Western blotting, and then examined the regulatory role of miR-21 on the PTEN expression and the mesenchymal transition, with real-time quantitative PCR, western blotting and luciferase reporter assay, and the migration of keratinocytic HaCaT cells with scratch assay. RESULTS It was demonstrated that miR-21 was upregulated by TGF-β1 treatment in HaCaT cells; and the upregulated miR-21 targeted the 3' UTR of PTEN gene and downregulated the PTEN expression, along with the Smad3/4 upregulation. Moreover, the miR-21 manipulation with miR-21 mimics or miR-21 inhibitor not only upregulated or downregulated the miR-21 level, but also associated with the mesenchymal transition and the migration of HaCaT cells via promoting or downregulating the FSP1 and Collagen I and the E-cadherin, and via upregulating or downregulating the migration of HaCaT cells. CONCLUSIONS Our results demonstrate that miR-21 mediates the TGF-β1-promoted mesenchymal transition and migration of keratinocytes during skin wound healing via targeting PTEN. This study implies that miR-21 might be an important target to promote the skin wound healing.
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Qiu Y, Chen WY, Wang ZY, Liu F, Wei M, Ma C, Huang YG. Simvastatin Attenuates Neuropathic Pain by Inhibiting the RhoA/LIMK/Cofilin Pathway. Neurochem Res 2016; 41:2457-2469. [DOI: https:/doi.org/10.1007/s11064-016-1958-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2024]
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Qiu Y, Wang X, Fan J, Rao Z, Lu Y, Lin T. Conversion From Calcineurin Inhibitors to Mammalian Target-of-Rapamycin Inhibitors in Heart Transplant Recipients: A Meta-Analysis of Randomized Controlled Trials. Transplant Proc 2016; 47:2952-6. [PMID: 26707320 DOI: 10.1016/j.transproceed.2015.09.059] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 09/17/2015] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Conversion from calcineurin inhibitors (CNIs) to mammalian target-of-rapamycin inhibitors (mTORi) was systematically evaluated in heart transplant recipients (HTRs) for the first time. METHODS MEDLINE (PUBMED), EMBASE, Cochrane Library, and clinical trial registries were searched comprehensively. After screening for eligibility, the randomized controlled trials (RCTs) comparing continuation of CNI with conversion to mTORi therapy underwent review, quality assessment, and data extraction. Outcomes analyzed including creatinine clearance, serum creatinine level, rejection, adverse effects, and triglyceride levels were expressed as mean differences (MDs) or as risk ratios (RRs) with 95% confidence intervals (CIs). RESULTS This is the first systematic review evaluating converting from CNI to mTORi therapy in HTRs. A total of 4 RCTs (231 HTRs, 117 vs 114) were included in our analysis. Patients converted to mTORi had a higher creatinine clearance (MD, 19.31; 95% CI [11.16, 27.46]; P < .00001) and lower serum creatinine levels (MD, -0.15; 95% CI [-0.25, -0.05]; P = .002). Patients converted to mTORi had a significantly higher occurrence of adverse effects, which included skin diseases, gastrointestinal side effects, bone marrow suppression, and infections. There was no significant difference between the 2 groups regarding graft rejection and triglyceride levels (RR, 2.61; 95% CI [0.08, 81.25]; P = .58; MD, 22.89; 95% CI [-21.86, 67.63]; P = .32). CONCLUSIONS Conversion from CNI to mTORi therapy may improve the renal function in HTRs, but the patients may suffer from a high incidence of mTORi-associated adverse events. Therefore, conversion to mTORi must be carefully assessed for the benefits and risks.
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Cai D, Wei X, Qiu Y, Chen Y, Chen J, Wen Z, Chen S. High-level expression of nattokinase in Bacillus licheniformis
by manipulating signal peptide and signal peptidase. J Appl Microbiol 2016; 121:704-12. [DOI: 10.1111/jam.13175] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 04/23/2016] [Accepted: 05/05/2016] [Indexed: 12/20/2022]
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Qiu Y, Song X, Xu X, Chen P, Zheng D. Real-Time Monitoring for the Physical Developing Rate with a Linear CCD. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/00223638.1995.11737050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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167
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Hao H, Chen L, Huang D, Ge J, Qiu Y, Hao L. Meta-analysis of alkaline phosphatase and prognosis for osteosarcoma. Eur J Cancer Care (Engl) 2016; 26. [PMID: 27349943 DOI: 10.1111/ecc.12536] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/23/2016] [Indexed: 01/11/2023]
Abstract
Many studies have evaluated the relationships between alkaline phosphatase (ALP) levels and the prognosis for osteosarcoma. However, a consensus has yet to be reached. We completed a meta-analysis to assess the significance of ALP and prognosis for osteosarcoma. We retrieved eligible documents from the PubMed and Embase databases and extracted related data from those documents. The overall survival (OS), hazard ratio (HR) and event-free survival (EFS) HR were obtained after combination to evaluate the impacts of ALP levels on prognosis for osteosarcoma. After screening, a total of 12 documents published between 1999 and 2013 were included. The ALP levels on OS were evaluated in nine documents. The pooled HRs was 1.78 (95% CI: 1.52-2.07, p < .05). The ALP levels on EFS were determined in eight documents. The pooled HRs was 1.58 (95% CI: 1.37-1.82, p < .05). Begg's test (OS, p > .754; EFS, p > .386) and Egger's test (OS, p > .649; EFS, p > .274) showed that there was no significant publication bias during analytic process. In summary, our meta-analysis shows that a higher level of ALP can decrease the OS and EFS in patients with osteosarcoma and ALP is an important biological indicator for patients with osteosarcoma.
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Zheng X, Qiu Y, Sun X, Qian BP, Wang B, Yu Y, Zhu ZZ. [A novel self-growing rod technique for early onset scoliosis: an experimental study based on a porcine scoliosis model]. ZHONGHUA YI XUE ZA ZHI 2016; 96:1821-5. [PMID: 27356790 DOI: 10.3760/cma.j.issn.0376-2491.2016.23.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To evaluate the efficacy of a growth-guidance growing rod in an established porcine scoliosis model via the Cobb angle correction and the continued spinal growth. METHODS Immature pigs (age: 6 weeks old, weight: 6-8 kg) were instrumented and tethered using a three separate incisions fashion.After considerable scoliosis was induced, the pigs were randomly assigned to an experiment group (EG) and a sham group (SG). In EG, the growing rod was implanted and the pigs were euthanized 8 weeks postoperatively; while in SG, the whole instrumentations were only removed and the pigs were followed up over a 8-week period.Dorsoventral (DV) X-ray radiographs were taken prior to and immediately after the growing rod implanting surgery, and at 4-week intervals to assess the Cobb angle orrection and instrumentation positioning.The continued spinal growth and the rod sliding were also assessed from the radiographs. RESULTS Of the 16 pigs, one pig encountered infection during the inducement of the experimental scoliosis and thus was excluded from analysis.Of the remaining 15 pigs, all animals developed progressive, structural scoliosis.The 15 pigs were randomized into EG(n=10) and SG(n=5). Two pigs in EG encountered infection and were also excluded from analysis.Of the remaining 8 pigs in EG, no neurologic complications, implant failure or infection were observed.In EG, the Cobb angle of the scoliosis before the growing rod implanted was (52.1 ±14.1)° and it decreased to (25.4±15.2)° postoperatively.After 8 weeks, the Cobb angle was (20.2±11.4)°.In SG, the Cobb angle of the scoliosis after 8-week tethering period was (55.2±15.7)° and it decreased to (53.6±15.8)° after removal of the tethering.The curvature remained stable (51.2°) during the subsequent 8 weeks.During the 8-16th week, the spinal height increased 14.2 cm and radiographic analysis of the growing rod sliding revealed an average distraction of 39.8 mm in EG; while in SG, the increased spinal height was 14.9 cm.The difference of the increased spinal height between EG and SG was not significant (P=0.821). CONCLUSION The novel growing rod system can provide substantial correction of deformity, and additionally, allow for continually spinal growth without significant growing disturbance.
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Wu LS, Gannon WJ, Zaliznyak IA, Tsvelik AM, Brockmann M, Caux JS, Kim MS, Qiu Y, Copley JRD, Ehlers G, Podlesnyak A, Aronson MC. Orbital-exchange and fractional quantum number excitations in an f-electron metal, Yb2Pt2Pb. Science 2016; 352:1206-10. [DOI: 10.1126/science.aaf0981] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 04/29/2016] [Indexed: 11/02/2022]
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Qiu Y, Wang Y, Belfield KD, Liu X. Ultrathin lensed fiber-optic probe for optical coherence tomography. BIOMEDICAL OPTICS EXPRESS 2016; 7:2154-2162. [PMID: 27375934 PMCID: PMC4918572 DOI: 10.1364/boe.7.002154] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 05/05/2016] [Accepted: 05/05/2016] [Indexed: 05/30/2023]
Abstract
We investigated and validated a novel method to develop ultrathin lensed fiber-optic (LFO) probes for optical coherence tomography (OCT) imaging. We made the LFO probe by attaching a segment of no core fiber (NCF) to the distal end of a single mode fiber (SMF) and generating a curved surface at the tip of the NCF using the electric arc of a fusion splicer. The novel fabrication approach enabled us to control the length of the NCF and the radius of the fiber lens independently. By strategically choosing these two parameters, the LFO probe could achieve a broad range of working distance and depth of focus for different OCT applications. A probe with 125μm diameter and lateral resolution up to 10μm was demonstrated. The low-cost, disposable and robust LFO probe is expected to have great potential for interstitial OCT imaging.
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Wang WJ, Liu F, Zhu YW, Sun MH, Qiu Y, Weng WJ. Sagittal alignment of the spine-pelvis-lower extremity axis in patients with severe knee osteoarthritis: A radiographic study. Bone Joint Res 2016; 5:198-205. [PMID: 27231331 PMCID: PMC4921054 DOI: 10.1302/2046-3758.55.2000538] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Accepted: 04/05/2016] [Indexed: 11/16/2022] Open
Abstract
Objectives Normal sagittal spine-pelvis-lower extremity alignment is crucial in humans for maintaining an ergonomic upright standing posture, and pathogenesis in any segment leads to poor balance. The present study aimed to investigate how this sagittal alignment can be affected by severe knee osteoarthritis (KOA), and whether associated changes corresponded with symptoms of lower back pain (LBP) in this patient population. Methods Lateral radiograph films in an upright standing position were obtained from 59 patients with severe KOA and 58 asymptomatic controls free from KOA. Sagittal alignment of the spine, pelvis, hip and proximal femur was quantified by measuring several radiographic parameters. Global balance was accessed according to the relative position of the C7 plumb line to the sacrum and femoral heads. The presence of chronic LBP was documented. Comparisons between the two groups were carried by independent samples t-tests or chi-squared test. Results Patients with severe KOA showed significant backward femoral inclination (FI), hip flexion, forward spinal inclination, and higher prevalence of global imbalance (27.1% versus 3.4%, p < 0.001) compared with controls. In addition, patients with FI of 10° (n = 23) showed reduced lumbar lordosis and significant forward spinal inclination compared with controls, whereas those with FI > 10° (n = 36) presented with significant pelvic anteversion and hip flexion. A total of 39 patients with KOA (66.1%) suffered from LBP. There was no significant difference in sagittal alignment between KOA patients with and without LBP. Conclusions The sagittal alignment of spine-pelvis-lower extremity axis was significantly influenced by severe KOA. The lumbar spine served as the primary source of compensation, while hip flexion and pelvic anteversion increased for further compensation. Changes in sagittal alignment may not be involved in the pathogenesis of LBP in this patient population. Cite this article: W. J. Wang, F. Liu, Y.W. Zhu, M.H. Sun, Y. Qiu, W. J. Weng. Sagittal alignment of the spine-pelvis-lower extremity axis in patients with severe knee osteoarthritis: A radiographic study. Bone Joint Res 2016;5:198–205. DOI:10.1302/2046-3758.55.2000538.
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Parri MC, Qiu Y, Walther T. New pathways for improved quantification of energy-dispersive X-ray spectra of semiconductors with multiple X-ray lines from thin foils investigated in transmission electron microscopy. J Microsc 2016; 260:427-41. [PMID: 26769195 DOI: 10.1111/jmi.12345] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 09/28/2015] [Indexed: 11/29/2022]
Abstract
Theoretical approaches to quantify the chemical composition of bulk and thin-layer specimens using energy-dispersive X-ray spectroscopy in a transmission electron microscope are compared to experiments investigating (In)GaAs and Si(Ge) semiconductors. Absorption correctors can be improved by varying the take-off angle to determine the depth of features within the foil or the samples thickness, or by definition of effective k-factors that can be obtained from plots of k-factors versus foil thickness or, preferably, versus the K/L intensity ratio for a suitable element. The latter procedure yields plots of self-consistent absorption corrections that can be used to determine the chemical composition, iteratively for SiGe using a set of calibration curves or directly from a single calibration curve for InGaAs, for single X-ray spectra without knowledge of sample thickness, density or mass absorption coefficients.
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Chowdhury P, Hota SS, Qiu Y, Ahmad I, Carpenter MP, Greene JP, Janssens RVF, Khoo TL, Kondev FG, Lauritsen T, Lister CJ, Seweryniak D, Zhu S. Towards Superheavies: Spectroscopy of 94 < Z < 98, 150 < N < 154 Nuclei. EPJ WEB OF CONFERENCES 2016. [DOI: 10.1051/epjconf/201612302003] [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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Huang L, Luo X, Shao J, Yan H, Qiu Y, Ke P, Zheng W, Xu B, Li W, Sun D, Cao D, Chen C, Zhuo F, Lin X, Tang F, Bao B, Zhou Y, Zhang X, Li H, Li J, Wan D, Yang L, Chen Y, Zhong Q, Gu X, Liu J, Huang L, Xie R, Li X, Xu Y, Luo Z, Liao M, Wang H, Sun L, Li H, Lau GW, Duan C. Epidemiology and characteristics of the dengue outbreak in Guangdong, Southern China, in 2014. Eur J Clin Microbiol Infect Dis 2015; 35:269-77. [DOI: 10.1007/s10096-015-2540-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Accepted: 11/29/2015] [Indexed: 01/27/2023]
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Disseler SM, Chen Y, Yeo S, Gasparovic G, Piccoli PMB, Schultz AJ, Qiu Y, Huang Q, Cheong SW, Ratcliff W. One Dimensional(1D)-to-2D Crossover of Spin Correlations in the 3D Magnet ZnMn2O4. Sci Rep 2015; 5:17771. [PMID: 26644220 PMCID: PMC4672353 DOI: 10.1038/srep17771] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 11/04/2015] [Indexed: 11/22/2022] Open
Abstract
We report on the intriguing evolution of the dynamical spin correlations of the frustrated spinel ZnMn2O4. Inelastic neutron scattering and magnetization studies reveal that the dynamical correlations at high temperatures are 1D. At lower temperature, these dynamical correlations become 2D. Surprisingly, the dynamical correlations condense into a quasi 2D Ising-like ordered state, making this a rare observation of two dimensional order on the spinel lattice. Remarkably, 3D ordering is not observed down to temperatures as low as 300 mK. This unprecedented dimensional crossover stems from frustrated exchange couplings due to the huge Jahn-Teller distortions around Mn3+ ions on the spinel lattice.
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Bao H, Liu Z, Yan P, Qiu Y, Zhu F. Disproportionate growth between the spine and pelvis in patients with thoracic adolescent scoliosis. Bone Joint J 2015; 97-B:1668-74. [PMID: 26637683 DOI: 10.1302/0301-620x.97b12.35874] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A self-control ratio, the spine-pelvis index (SPI), was proposed for the assessment of patients with adolescent idiopathic scoliosis (AIS) in this study. The aim was to evaluate the disproportionate growth between the spine and pelvis in these patients using SPI. A total of 64 female patients with thoracic AIS were randomly enrolled between December 2010 and October 2012 (mean age 13 years, standard deviation (sd) 2.17; 9 to 18) and a further 73 healthy female patients with a mean age of 12.4 years (mean age 12.4 years, sd 2.24; 9 to 18), were randomly selected from a normal control database at our centre. The radiographic parameters measured included length of spine (LOS), height of spine (HOS), length of thoracic vertebrae (LOT), height of thoracic vertebrae (HOT), width of pelvis (WOP), height of pelvis (HOP) and width of thorax (WOT). SPI was defined as the ratio LOS/HOP. The SPI and LOT/HOP in patients with AIS showed a significant increase when compared with normal girls (p < 0.001 and p < 0.001 respectively), implying an abnormal pattern of growth of the spine relative to the pelvis in patients with AIS. No significant difference in SPI was found in different age groups in the control group, making the SPI an age-independent parameter with a mean value of 2.219 (2.164 to 2.239). We also found that the SPI was not related to maturity in the control group. This study, for the first time, used a self-control ratio to confirm the disproportionate patterns of growth of the spine and pelvis in patients with thoracic AIS, highlighting that the SPI is not affected by age or maturity. Cite this article: Bone Joint J 2015;97-B:1668–74.
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Qiu Y, Lee B, Neumann N, Ashbolt N, Craik S, Maal-Bared R, Pang X. Assessment of human virus removal during municipal wastewater treatment in Edmonton, Canada. J Appl Microbiol 2015; 119:1729-39. [DOI: 10.1111/jam.12971] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 09/11/2015] [Accepted: 09/23/2015] [Indexed: 12/25/2022]
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Huang DJ, Xie LZ, Qiu Y. Analysis of Factors Affecting the Length of Hospital Stay for Patients with Diabetes. Exp Clin Endocrinol Diabetes 2015; 124:5-10. [PMID: 26588492 DOI: 10.1055/s-0035-1565059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE The sharp rise in health expenditure of diabetes has become a huge financial and medical burden. A retrospective study was conducted to investigate the length of hospitalization for patients with diabetes and the control methods of the length of hospitalization, so as to improve the social and economic benefits of the hospital. METHODS Data of patients with diabetes who were admitted in the Guangdong Shantou Central Hospital from 2011 to 2013 were collected. Descriptive statistics and logistic regression analysis were used to explore the factors influencing the length of hospitalization for patients with diabetes such as sociological factors, disease factors, and clinical factors. RESULTS Univariate analysis results indicated that there were factors influencing the length of hospitalization for patients with diabetes, which were as follows: sociological factors including age (P<0.001), occupation (P=0.001), payment method (P<0.001), and the number of hospitalizations (P<0.001); disease factors including comorbidity (P<0.001) and initial glycated hemoglobin levels (P<0.001); and clinical factors including hospital-acquired infection (P<0.001), surgery (P<0.001), diagnoses within 3 days (P<0.001), department transfers (P=0.007), and treatment efficacy (P=0.003). In logistic regression analysis, 7 factors including surgery, hospital-acquired infections, comorbidities, age, payment methods, number of hospitalizations, and treatment efficacy had significant impacts on the length hospitalization for patients with diabetes. CONCLUSION The results of this study will be provided as a reference for a reasonable length of hospitalization of patients with diabetes.
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David HM, Chen J, Seweryniak D, Kondev FG, Gates JM, Gregorich KE, Ahmad I, Albers M, Alcorta M, Back BB, Baartman B, Bertone PF, Bernstein LA, Campbell CM, Carpenter MP, Chiara CJ, Clark RM, Cromaz M, Doherty DT, Dracoulis GD, Esker NE, Fallon P, Gothe OR, Greene JP, Greenlees PT, Hartley DJ, Hauschild K, Hoffman CR, Hota SS, Janssens RVF, Khoo TL, Konki J, Kwarsick JT, Lauritsen T, Macchiavelli AO, Mudder PR, Nair C, Qiu Y, Rissanen J, Rogers AM, Ruotsalainen P, Savard G, Stolze S, Wiens A, Zhu S. Publisher's Note: Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in (254)Rf [Phys. Rev. Lett. 115, 132502 (2015)]. PHYSICAL REVIEW LETTERS 2015; 115:169902. [PMID: 26550909 DOI: 10.1103/physrevlett.115.169902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Indexed: 06/05/2023]
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Inzucchi SE, Tunceli K, Qiu Y, Rajpathak S, Brodovicz KG, Engel SS, Mavros P, Radican L, Brudi P, Li Z, Fan CPS, Hanna B, Tang J, Blonde L. Progression to insulin therapy among patients with type 2 diabetes treated with sitagliptin or sulphonylurea plus metformin dual therapy. Diabetes Obes Metab 2015; 17:956-64. [PMID: 25962401 PMCID: PMC5033027 DOI: 10.1111/dom.12489] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 05/04/2015] [Accepted: 05/07/2015] [Indexed: 01/29/2023]
Abstract
AIM To assess time to insulin initiation among patients with type 2 diabetes mellitus (T2DM) treated with sitagliptin versus sulphonylurea as add-on to metformin. METHODS This retrospective cohort study used GE Centricity electronic medical records and included patients aged ≥18 years with continuous medical records and an initial prescription of sitagliptin or sulphonylurea (index date) with metformin for ≥90 days during 2006-2013. Sitagliptin and sulphonylurea users were matched 1 : 1 using propensity score matching, and differences in insulin initiation were assessed using Kaplan-Meier curves and Cox regression. We used conditional logistic regression to examine the likelihood of insulin use 1-6 years after the index date for each year. RESULTS Propensity score matching produced 3864 matched pairs. Kaplan-Meier analysis showed that sitagliptin users had a lower risk of insulin initiation compared with sulphonylurea users (p = 0.003), with 26.6% of sitagliptin users initiating insulin versus 34.1% of sulphonylurea users over 6 years. This finding remained significant after adjusting for baseline characteristics (hazard ratio 0.76, 95% confidence interval 0.65-0.90). Conditional logistic regression analyses confirmed that sitagliptin users were less likely to initiate insulin compared with sulphonylurea users [odds ratios for years 1-6: 0.77, 0.79, 0.81, 0.57, 0.29 and 0.75, respectively (p < 0.05 for years 4 and 5)]. CONCLUSIONS In this real-world matched cohort study, patients with T2DM treated with sitagliptin had a significantly lower risk of insulin initiation compared with patients treated with sulphonylurea, both as add-on to metformin.
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David HM, Chen J, Seweryniak D, Kondev FG, Gates JM, Gregorich KE, Ahmad I, Albers M, Alcorta M, Back BB, Baartman B, Bertone PF, Bernstein LA, Campbell CM, Carpenter MP, Chiara CJ, Clark RM, Cromaz M, Doherty DT, Dracoulis GD, Esker NE, Fallon P, Gothe OR, Greene JP, Greenlees PT, Hartley DJ, Hauschild K, Hoffman CR, Hota SS, Janssens RVF, Khoo TL, Konki J, Kwarsick JT, Lauritsen T, Macchiavelli AO, Mudder PR, Nair C, Qiu Y, Rissanen J, Rogers AM, Ruotsalainen P, Savard G, Stolze S, Wiens A, Zhu S. Decay and Fission Hindrance of Two- and Four-Quasiparticle K Isomers in ^{254}Rf. PHYSICAL REVIEW LETTERS 2015; 115:132502. [PMID: 26451549 DOI: 10.1103/physrevlett.115.132502] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Indexed: 06/05/2023]
Abstract
Two isomers decaying by electromagnetic transitions with half-lives of 4.7(1.1) and 247(73) μs have been discovered in the heavy ^{254}Rf nucleus. The observation of the shorter-lived isomer was made possible by a novel application of a digital data acquisition system. The isomers were interpreted as the K^{π}=8^{-}, ν^{2}(7/2^{+}[624],9/2^{-}[734]) two-quasineutron and the K^{π}=16^{+}, 8^{-}ν^{2}(7/2^{+}[624],9/2^{-}[734])⊗8^{-}π^{2}(7/2^{-}[514],9/2^{+}[624]) four-quasiparticle configurations, respectively. Surprisingly, the lifetime of the two-quasiparticle isomer is more than 4 orders of magnitude shorter than what has been observed for analogous isomers in the lighter N=150 isotones. The four-quasiparticle isomer is longer lived than the ^{254}Rf ground state that decays exclusively by spontaneous fission with a half-life of 23.2(1.1) μs. The absence of sizable fission branches from either of the isomers implies unprecedented fission hindrance relative to the ground state.
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Qiu Y, Smith T, Foegeding E, Drake M. The effect of microfiltration on color, flavor, and functionality of 80% whey protein concentrate. J Dairy Sci 2015; 98:5862-73. [DOI: 10.3168/jds.2014-9174] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 06/03/2015] [Indexed: 11/19/2022]
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Qiu Y, Bender H, Richard O, Kim MS, Van Besien E, Vos I, de Potter de ten Broeck M, Mocuta D, Vandervorst W. Epitaxial diamond-hexagonal silicon nano-ribbon growth on (001) silicon. Sci Rep 2015; 5:12692. [PMID: 26239286 PMCID: PMC4523848 DOI: 10.1038/srep12692] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 07/07/2015] [Indexed: 11/09/2022] Open
Abstract
Silicon crystallizes in the diamond-cubic phase and shows only a weak emission at 1.1 eV. Diamond-hexagonal silicon however has an indirect bandgap at 1.5 eV and has therefore potential for application in opto-electronic devices. Here we discuss a method based on advanced silicon device processing to form diamond-hexagonal silicon nano-ribbons. With an appropriate temperature anneal applied to densify the oxide fillings between silicon fins, the lateral outward stress exerted on fins sandwiched between wide and narrow oxide windows can result in a phase transition from diamond-cubic to diamond-hexagonal Si at the base of these fins. The diamond-hexagonal slabs are generally 5-8 nm thick and can extend over the full width and length of the fins, i.e. have a nano-ribbon shape along the fins. Although hexagonal silicon is a metastable phase, once formed it is found being stable during subsequent high temperature treatments even during process steps up to 1050 ºC.
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Huang S, Shi L, Tian Z, Yuan S, Zhu C, Gong G, Qiu Y. Effect of Al3+ substitution on the structural, magnetic, and electric properties in multiferroic Bi2Fe4O9 ceramics. J SOLID STATE CHEM 2015. [DOI: 10.1016/j.jssc.2015.03.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Zhao YK, Jia CM, Yuan GJ, Liu W, Qiu Y, Zhu QG. Expression and clinical value of the soluble major histocompatibility complex class I-related chain A molecule in the serum of patients with renal tumors. GENETICS AND MOLECULAR RESEARCH 2015; 14:7233-40. [PMID: 26125933 DOI: 10.4238/2015.june.29.16] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We investigated the expression and clinical value of the soluble major histocompatibility complex class I-related chain A (sMICA) molecule in the serum of patients with renal tumors. Sixty patients diagnosed with renal tumors were enrolled in the experimental group, whereas 20 healthy volunteers served as the control group. The sMICA levels were measured via enzyme-linked immunosorbent assay, and the results were analyzed in combination with data from pathol-ogy examination. The experimental group had a statistically significant higher sMICA level (P < 0.05) than the control group. The sMICA level was higher in patients with malignant tumors than in those with be-nign tumors. We also observed a positive relationship among different tumor-node-metastasis (TNM) pathological stages with more advanced diseases exhibiting higher sMICA levels. As a tumor-associated antigen, MICA has a close relationship with renal tumorigenesis and immune es-cape. Our results indicated that sMICA levels were related to tumor pathol-ogy, TNM stage, and metastasis. Therefore, sMICA might be a potential marker for tumor characteristics, prognosis, and recurrence prediction.
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Chen M, Yang C, Qiu Y, He D, Huang D, Wei W. Superior half of the sternoclavicular joint pedicled with the sternocleidomastoid muscle for reconstruction of the temporomandibular joint: a preliminary study with a simplified technique and expanded indications. Int J Oral Maxillofac Surg 2015; 44:685-91. [DOI: 10.1016/j.ijom.2015.03.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 01/24/2015] [Accepted: 03/13/2015] [Indexed: 10/23/2022]
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Watanabe M, Nakao R, Amin-Babjee SM, Maizatul AM, Youn JH, Qiu Y, Sugimoto C, Watanabe M. Molecular screening for Rickettsia, Anaplasmataceae and Coxiella burnetii in Rhipicephalus sanguineus ticks from Malaysia. Trop Biomed 2015; 32:390-398. [PMID: 26691268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A total of 44 Rhipicephalus sanguineus ticks collected from 23 dogs from Malaysia were screened for Rickettsia, Anaplasmataceae and Coxiella burnetii. Coxiella burnetii was detected in 59% (26/44) of ticks however Rickettsia and Anaplasmataceae were not detected in any of the ticks. In order to genotype the strains of C. burnetii, multispacer sequence typing (MST) was carried out using three different spacers. One of the spacers; Cox2 successfully amplified a fragment for which the full length sequence of 397 bp was obtained. The sequenced product revealed only a single nucleotide difference with the Cox2.3 type sequence.
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Yang H, Yan B, Liao D, Huang S, Qiu Y. Acetylation of HDAC1 and degradation of SIRT1 form a positive feedback loop to regulate p53 acetylation during heat-shock stress. Cell Death Dis 2015; 6:e1747. [PMID: 25950477 PMCID: PMC4669686 DOI: 10.1038/cddis.2015.106] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 02/24/2015] [Accepted: 03/10/2015] [Indexed: 01/11/2023]
Abstract
The tumor suppressor p53 is an essential transcription factor that sensitively regulates cellular responses to various stresses. Acetylation, a critically important posttranslational modification of p53, is induced in response to cellular stresses. P53 acetylation level strongly correlates with protein stability and activity. The steady-state level of p53 acetylation is balanced by dynamic acetylation and deacetylation. Despite the function of p53 acetylation being well studied, how the steady state of p53 acetylation level is regulated in response to cellular stresses remains unclear. In particular, the dynamic regulation of the deacetylase activities responsible for p53 deacetylation during cellular stress is unknown. In the current study, we investigated the dynamic regulation of HDAC1 (histone deacetylase 1) and SIRT1 (sirtuin 1), two major enzymes for p53 deacetylation, during cell stress. We found that various cell stress events induce HDAC1 acetylation. The increased level of HDAC1 acetylation correlates with the level of p53 acetylation. Acetylated HDAC1 loses the ability to deacetylate p53. Cellular stresses also promote the decline of the SIRT1 protein in a proteasome-dependent pathway, which also results in the increase of p53 acetylation. Importantly, the decreased level of SIRT1 also contributes to the accumulation of HDAC1 acetylation as SIRT1 deacetylates HDAC1. Therefore, the increase of HDAC1 acetylation and reduced level of SIRT1 protein during cellular stress directly link to the induction of p53 acetylation. These results unveil the mechanism underlying the dynamic regulation of p53 acetylation during cell stress.
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Ren A, Qiu Y, Cui H, Fu G. Tigecycline exerts an antitumoral effect in oral squamous cell carcinoma. Oral Dis 2015; 21:558-64. [PMID: 25581076 DOI: 10.1111/odi.12311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 11/30/2014] [Accepted: 12/12/2014] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To explore whether antibacterial drug tigecycline could exert an antitumoral effect in oral squamous cell carcinoma (OSCC). MATERIALS AND METHODS Two OSCC cell lines Tca8113 and KB were used in this study. To investigate the cytostatic effects of tigecycline in OSCC, cell growth was tested by trypan blue staining, MTT assay, and Brdu immunofluorescence staining. Then, the apoptosis proportion was measured by FITC Annexin-V and PI labeling, and cell cycle was determined by PI staining. The expression of caspase 3 (CASP3) and cell cycle regulatory protein was detected by Western blot assay. Finally, the clonogenesis and tumorigenesis capacity were analyzed by soft agar growth and xenograft model. RESULTS Here, we showed that tigecycline significantly inhibited cell growth and proliferation in OSCC cell lines Tca8113 and KB. It did not induce cell apoptosis but led to an increase of cells in G0/G1 phase with down-regulation of cyclin E2 (CCNE2) and cyclin-dependent kinase4 (CDK4) protein expression. We also showed that tigecycline inhibited colony formation in soft agar and reduced tumor growth in a xenograft model. CONCLUSION Our results suggested that tigecycline might be used as a novel candidate agent for the treatment of OSCC.
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Qiu Y, Muller CP, Van Reeth K. Lower seroreactivity to European than to North American H3N2 swine influenza viruses in humans, Luxembourg, 2010. Euro Surveill 2015; 20:25-33. [DOI: 10.2807/1560-7917.es2015.20.13.21078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Seroreactivity to H3N2 swine influenza viruses (SIVs) was evaluated in serum samples collected from 843 people aged 0 to 100 years in 2010 in Luxembourg. Sera were analysed by haemagglutination inhibition (HI) and virus neutralisation (VN) assays targeting a European H3N2 SIV, a North American H3N2 variant of swine origin (H3N2v) and human seasonal H3N2 viruses isolated in 1975, 1995 and 2005. HI antibodies (titre?≥?10) against European H3N2 SIV were almost exclusively detected in those born before 1990, of whom 70% were seropositive. HI antibodies against H3N2v were predominantly found in those born before 2000, with 86% seropositive. Titres against the North American H3N2v were higher than against the European H3N2 SIV. VN patterns were similar, but with higher rates and titres. We also demonstrated lower seroreactivity to European H3N2 SIV than to North American H3N2v virus. Finally, we found a strong correlation between HI titres against the European H3N2 SIV and H3N2v and their respective human ancestors, A/Victoria/3/75 and A/Nanchang/933/95. This finding and the minimal contacts between humans and pigs in Luxembourg suggest that anti-SIV antibodies in human serum samples reflect serological cross-reactivity with historical human H3N2 viruses. Our findings help assess the pandemic risk of H3N2 SIV.
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Qiu Y, Yao J, Wu X, Zhou B, Shao H, Hua T, Xiong Z, Tang G. Longitudinal assessment of oxytocin efficacy on bone and bone marrow fat masses in a rabbit osteoporosis model through 3.0-T magnetic resonance spectroscopy and micro-CT. Osteoporos Int 2015; 26:1081-92. [PMID: 25690480 DOI: 10.1007/s00198-014-2933-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 10/03/2014] [Indexed: 01/12/2023]
Abstract
UNLABELLED This study aims to longitudinally assess the effect of oxytocin on bone and bone fat masses using micro-CT, in vivo magnetic resonance spectroscopy (MRS), and histopathological adipocyte quantification. Early in vivo oxytocin (OT) treatment to the osteoporosis (OP) rabbit model may reliably inhibit bone degeneration and reduce bone marrow fat accumulation by decreasing marrow adipocyte size and density. INTRODUCTION This study aims to longitudinally assess the effect of early OT treatment on bone and bone fat masses in a rabbit OP model by comparing the results of MRS and micro-CT with histopathological findings. METHODS Sixty 20-week-old female rabbits were randomly assigned into three groups. The control and OP groups were subjected to either sham surgery or bilateral ovariectomy (OVX). The OT group was subcutaneously injected with OT daily from the second week after OVX for 8 weeks. The left proximal femurs of the rabbits were evaluated through MRS, micro-CT, and histopathological examination at 0, 4, 8, 10, and 12 weeks after operation. Differences in fat fraction (FF) values, micro-CT parameters, and calculated pathological marrow adipocytes among three groups were analyzed. RESULTS The FF values of the OP group significantly increased (p = 0.019), but the tissue mineral density (TMD) decreased (p = 0.037) from eighth week compared with those of the control group. The FF values of the OT group significantly decreased (p = 0.044), but the TMD values increased (p = 0.042) from eighth week compared with those of the OP group. The adypocyte diameter of the OT group significantly decreased (p = 0.041) from eighth week and then adypocyte density did so too from tenth week, compared with those of the OP group at the same time point. No difference in adypocyte calculation was found between the OT and control groups until the 12th week after operation. CONCLUSION Early in vivo OT treatment slowed down bone deterioration and reduced bone marrow adiposity accumulation in a rabbit OP model, which is consistent with pathologic findings. OT treatment is a promising preventive OP therapy.
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Li X, Lopetcharat K, Qiu Y, Drake M. Sugar reduction of skim chocolate milk and viability of alternative sweetening through lactose hydrolysis. J Dairy Sci 2015; 98:1455-66. [DOI: 10.3168/jds.2014-8490] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Accepted: 09/28/2014] [Indexed: 11/19/2022]
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Hughes DA, Qiu Y, Démoré C, Weijer CJ, Cochran S. Alignment of an acoustic manipulation device with cepstral analysis of electronic impedance data. ULTRASONICS 2015; 56:172-177. [PMID: 25448425 DOI: 10.1016/j.ultras.2014.09.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 09/24/2014] [Accepted: 09/24/2014] [Indexed: 06/04/2023]
Abstract
Acoustic particle manipulation is an emerging technology that uses ultrasonic standing waves to position objects with pressure gradients and acoustic radiation forces. To produce strong standing waves, the transducer and the reflector must be aligned properly such that they are parallel to each other. This can be a difficult process due to the need to visualise the ultrasound waves and as higher frequencies are introduced, this alignment requires higher accuracy. In this paper, we present a method for aligning acoustic resonators with cepstral analysis. This is a simple signal processing technique that requires only the electrical impedance measurement data of the resonator, which is usually recorded during the fabrication process of the device. We first introduce the mathematical basis of cepstral analysis and then demonstrate and validate it using a computer simulation of an acoustic resonator. Finally, the technique is demonstrated experimentally to create many parallel linear traps for 10 μm fluorescent beads inside an acoustic resonator.
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Yu W, Ma G, Qiu Y, Chen H, Jin Y, Yang X, Chang L, Wang T, Hu X, Li W, Lin X. Prospective comparison treatment of 595-nm pulsed-dye lasers for virgin port-wine stain. Br J Dermatol 2015; 172:684-91. [PMID: 25130205 DOI: 10.1111/bjd.13356] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/11/2014] [Indexed: 11/26/2022]
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Qiu Y, Yang DC, Yin B, Lei JX, Zhang HQ, Zhang Z, Chen H, Li YP, Bian JM, Liu YH, Zhao Y, Hu LZ. Branched ZnO nanotrees on flexible fiber-paper substrates for self-powered energy-harvesting systems. RSC Adv 2015. [DOI: 10.1039/c4ra09163a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Branched ZnO nanotrees have been successfully synthesized on flexible fiber-paper substrates for realizing high-performance piezoelectric nanogenerators. And the output voltage of the NG increased to 0.1 V, enough to power some micro/nano devices.
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McGee SF, Kornblau SM, Qiu Y, Look AT, Zhang N, Yoo SY, Coombes KR, Kentsis A. Biological properties of ligand-dependent activation of the MET receptor kinase in acute myeloid leukemia. Leukemia 2014; 29:1218-21. [PMID: 25541150 DOI: 10.1038/leu.2014.348] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Chen J, Radican L, Shankar R, Hiver M, Qiu Y. Cost-Effectiveness of Sitagliptin Versus Sulfonylurea As An Add-On Therapy To Metformin In Patients With Type 2 Diabetes In A Belgium Setting. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A349. [PMID: 27200671 DOI: 10.1016/j.jval.2014.08.721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Laires P, Fu AZ, Iglay K, Qiu Y. Factors Associated With Discontinuation of Sulfonylurea Therapy In Type 2 Diabetes Patients Who Initiate Insulin. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A353. [PMID: 27200691 DOI: 10.1016/j.jval.2014.08.742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Laires P, Iglay K, Fan CPS, Li Z, Tang J, Qiu Y. Impact of Hypoglycemia on Discontinuing or Down-Titrating Sulfonylurea Among Type 2 Diabetes Patients Without Insulin. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2014; 17:A353. [PMID: 27200692 DOI: 10.1016/j.jval.2014.08.743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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