501
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Wang T, Chen SR, Jin F, Cai JH, Cui LY, Zheng YM, Wang JX, Song YL, Jiang L. Droplet-assisted fabrication of colloidal crystals from flower-shaped porphyrin Janus particles. Chem Commun (Camb) 2015; 51:1367-70. [DOI: 10.1039/c4cc08045a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Porphyrin colloidal crystals were fabricated from flower-shaped Janus particles by a two-step droplet condensation process.
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502
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Wang CL, Ding BJ, Jiang L, Yin CX, Zhong QX, Yu GP, Li XD, Meng FY. Increased expression of amyloid precursor protein promotes proliferation and migration of AML1/ETO-positive leukemia cells and be inhibited by panobinostat. Neoplasma 2015; 62:864-71. [PMID: 26458322 DOI: 10.4149/neo_2015_105] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Amyloid precursor protein (APP) is a highly conserved integral membrane protein extensively expressed in various types of cells. Previously we found that overexpression of APP in patients with AML1/ETO-positive acute myeloid leukemia (AML) associated with a higher incidence of extramedullary infiltrationin and indicate a poor prognosis. In this study, we attempted to define the roles of APP in AML1/ETO-positive leukemia cells. Western blotting and qRT-PCR analysis showed that protein levels of APP are significantly higher in Kasumi-1, a t(8;21)/ AML1/ETO-positive M2-type AML cell line. Stable knockdown of APP by lentivirus-based RNA interference (RNAi) dramatically impaired colony-formation and migration ability of Kasumi-1 cells, whereas APP knockdown had very little effect on cell viability, apoptosis, cell cycle and differentiation. We further explored whether the pan-histone deacetylase inhibitor panobinostat could deplete the protein levels of APP in Kasumi-1 cells. Treatment with panobinostat caused depletion of APP in Kasumi-1 cells. These findings indicate that overexpression of APP is involved in promoting proliferation and migration of AML1/ETO-positive leukemia cells and can be inhibited by panobinostat, which provide an attractive prospect for treatment of AML1/ETO-positive AML.
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503
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Tang B, Zhang H, Jiang L. The correlation between the mouth diameter of left atrial appendage and stroke risk score in patients with atrial fibrillation. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2015; 19:790-794. [PMID: 25807431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE Our objective is to explore the correlation between the mouth diameter of left atrial appendage (LAA) and stroke risk score in patients with atrial fibrillation (AF), to find the effective ways to improve diagnosis and treatment level. PATIENTS AND METHODS 112 patients with AF during January 2011-April 2013 were retrospectively analyzed, including 79 cases with paroxysmal AF and 32 cases with persistent AF or long-standing persistent AF (LS-AF). Radiofrequency catheter ablation (RFCA) and transesophageal echocardiography were used to detect the maximum mouth diameter of LAA, the correlation of which with stroke risk score was analyzed. RESULTS In the patients with paroxysmal AF, the mouth diameter of LAA was 18.63 ± 4.14 mm, CHADS2 score was 0.91 ± 0.90 points and CHA2DS2-VASc score was 1.89 ± 1.36 points while in the patients with persistent AF or LS-AF, the mouth diameter of LAA was 20.68 ± 5.49 mm, CHADS2 score was 0.85 ± 0.84 points and CHA2DS2-VASc score was 1.67 ± 1.41 points. The mouth diameters of LAA, CHADS2 score and CHA2DS2-VASc score were statistically different between these two types of AF (p < 0.05). Moreover, the mouth diameter of LAA, CHADS2 score and CHA2DS2-VASc were not statistically correlated with paroxysmal AF or persistent AF (p > 0.05). CONCLUSIONS Different types of AF are correlated with the mouth diameter of LAA, however, the mouth diameter of LAA is not correlated with stroke risk score.
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504
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Li Z, Zhang J, Wang S, Jiang L, Latroche M, Du J, Cuevas F. Mechanochemistry of lithium nitride under hydrogen gas. Phys Chem Chem Phys 2015; 17:21927-34. [DOI: 10.1039/c5cp02812d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article unveils reaction paths and chemical kinetics during mechanochemical hydrogenation of lithium nitride, a key material for hydrogen storage.
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505
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Hu H, Huang Y, Jiang L, Yangn MJ, Xu SY, Wang YM, Hu ZP. Relationship between eNOS gene polymorphism and cerebral infarction of young and middle-aged Chinese Han population. BRATISL MED J 2014; 115:708-11. [PMID: 25428540 DOI: 10.4149/bll_2014_137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
PURPOSE To discuss the relationship between the acute cerebral infarction of differently aged population and the variable number tandem repeat polymorphism of endothelial nitric oxide synthase (eNOS) gene. METHODS The genotypes of 129 acute cerebral infarction patients and 100 healthy control subjects were determined by PCR and polyacrylamide gel electrophoresis (PAGE). RESULTS In the patient group, the frequency of allelic gene a was higher than that in the control group (13.56 % vs 3 %, p < 0.01), and the frequencies of the patients followed the descending order from young through middle-aged to elderly (42.31 % vs 17.2 % vs 5.8 %). The frequencies of the young, middle-aged and elderly population in the control group differed significantly (5.55 % vs 2.94 % vs 2.63 %), and those of the young and middle-aged population in the two groups also differed statistically significantly. CONCLUSION The ab genotype of eNOS 4th intron is correlated with the acute cerebral infarction of young and middle-aged Chinese Han population that may involve allelic gene a as an independent risk factor (Tab. 3, Fig. 3, Ref. 13).
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506
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Cheng FR, Yang YJ, Liang Y, Yan JQ, Cao J, Su T, Jiang L, He B, Luo XL, Gu ZW. Correlation of polymeric micelle sizes and their cellular internalization in vitro and tumor targeting in vivo. RSC Adv 2014. [DOI: 10.1039/c4ra12110d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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507
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Laszczak P, Jiang L, Bader DL, Moser D, Zahedi S. Development and validation of a 3D-printed interfacial stress sensor for prosthetic applications. Med Eng Phys 2014; 37:132-7. [PMID: 25455164 DOI: 10.1016/j.medengphy.2014.10.002] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 09/07/2014] [Accepted: 10/01/2014] [Indexed: 11/16/2022]
Abstract
A novel capacitance-based sensor designed for monitoring mechanical stresses at the stump-socket interface of lower-limb amputees is described. It provides practical means of measuring pressure and shear stresses simultaneously. In particular, it comprises of a flexible frame (20 mm × 20 mm), with thickness of 4mm. By employing rapid prototyping technology in its fabrication, it offers a low-cost and versatile solution, with capability of adopting bespoke shapes of lower-limb residua. The sensor was first analysed using finite element analysis (FEA) and then evaluated using lab-based electromechanical tests. The results validate that the sensor is capable of monitoring both pressure and shear at stresses up to 350 kPa and 80 kPa, respectively. A post-signal processing model is developed to induce pressure and shear stresses, respectively. The effective separation of pressure and shear signals can be potentially advantageous for sensor calibration in clinical applications. The sensor also demonstrates high linearity (approx. 5-8%) and high pressure (approx. 1.3 kPa) and shear (approx. 0.6 kPa) stress resolution performance. Accordingly, the sensor offers the potential for exploitation as an assistive tool to both evaluate prosthetic socket fitting in clinical settings and alert amputees in home settings of excessive loading at the stump-socket interface, effectively preventing stump tissue breakdown at an early stage.
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508
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Ren Q, Zhang H, Guo H, Jiang L, Tian M, Ren F. Detection of cow milk adulteration in yak milk by ELISA. J Dairy Sci 2014; 97:6000-6. [DOI: 10.3168/jds.2014-8127] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 07/09/2014] [Indexed: 11/19/2022]
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509
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Luo K, Li S, Jiang L, Zuo T, Qing J, Shi X, Liu Y, Wu H, Chen X, Zhang L. Combinatorial library-based profiling of the antibody response against hepatitis C virus in humans. J Gen Virol 2014; 96:52-63. [PMID: 25274855 DOI: 10.1099/vir.0.069278-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The antibody response plays a crucial role against hepatitis C virus (HCV) infection, and our understanding of this intricate progress in vivo is far from complete. We previously reported a novel and robust technique based on a large combinatorial viral antigen library displayed on the surface of the yeast Saccharomyces cerevisiae, allowing comprehensive profiling of polyclonal antibody responses in vivo in both qualitative and quantitative terms. Here, we report the generation and application of a combinatorial library of HCV strain JFH1 envelope glycoprotein to profile the antibody response in four HCV chronically infected individuals. By systematic analysis of the location and frequency of antigenic fragments along the JFH1 envelope glycoprotein, we showed that the major binding antibody response was targeted to E2 (80.9-99.8 %), whilst that against E1 was relatively small (0.3-19.0 %). A total of five major antigenic domains (D1-D5) were identified: one was within E1 and an additional four within E2, despite substantial variability among the different individuals. However, serum absorption with the yeast clones containing the antigenic domain D1 resulted in more reduction in neutralizing antibody activity against pseudotyped HCV than those in E2, suggesting that E1 contains additional neutralizing epitopes. Our results have provided additional insights into the HCV-specific antibody response in humans and should assist in a better understanding of protective antibody immunity and in guiding the development of effective vaccines and therapeutics against HCV infection.
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510
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Zhang Z, Jiang L, Wang J, Gu P, Chen M. MTide: an integrated tool for the identification of miRNA-target interaction in plants. Bioinformatics 2014; 31:290-1. [DOI: 10.1093/bioinformatics/btu633] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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511
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Liu L, Jiang L, Xu GK, Ma C, Yang XG, Yao JM. Potential of alginate fibers incorporated with drug-loaded nanocapsules as drug delivery systems. J Mater Chem B 2014; 2:7596-7604. [DOI: 10.1039/c4tb01392a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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512
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Jiang L, Shin D, Lee Y. A Survey on the Awareness of Sodium in Korean Restaurant Industry and the Analysis of Sodium Contents of Representative Korean Foods. J Acad Nutr Diet 2014. [DOI: 10.1016/j.jand.2014.06.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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513
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Chen Z, Deng W, Gong Q, Huang C, Jiang L, Li M, He Z, Wang Q, Ma X, Wang Y, Chua SE, McAlonan GM, Sham PC, Collier DA, McGuire P, Li T. Extensive brain structural network abnormality in first-episode treatment-naive patients with schizophrenia: morphometrical and covariation study. Psychol Med 2014; 44:2489-2501. [PMID: 24443827 DOI: 10.1017/s003329171300319x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Alterations in gray matter (GM) are commonly observed in schizophrenia. Accumulating studies suggest that the brain changes associated with schizophrenia are distributed rather than focal, involving interconnected networks of areas as opposed to single regions. In the current study we aimed to explore GM volume (GMV) changes in a relatively large sample of treatment-naive first-episode schizophrenia (FES) patients using optimized voxel-based morphometry (VBM) and covariation analysis. METHOD High-resolution T1-weighted images were obtained using 3.0-T magnetic resonance imaging (MRI) from 86 first-episode drug-naive patients with schizophrenia and 86 age- and gender-matched healthy volunteers. Symptom severity was evaluated using the Positive and Negative Syndrome Scale (PANSS). GMV was assessed using optimized VBM and in 16 regions of interest (ROIs), selected on the basis of a previous meta-analysis. The relationships between GMVs in the ROIs were examined using an analysis of covariance (ANCOVA). RESULTS The VBM analysis revealed that first-episode patients showed reduced GMV in the hippocampus bilaterally. The ROI analysis identified reductions in GMV in the left inferior frontal gyrus, bilateral hippocampus and right thalamus. The ANCOVA revealed different patterns of regional GMV correlations in patients and controls, including of inter- and intra-insula, inter-amygdala and insula-postcentral gyrus connections. CONCLUSIONS Schizophrenia involves regional reductions in GMV and changes in GMV covariance in the insula, amygdala and postcentral gyrus. These findings were evident at the onset of the disorder, before treatment, and therefore cannot be attributable to the effects of chronic illness progression or medication.
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514
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Yan X, Jiang L, Li X, Zhang K, Xia B, Liu P, Qu L, Lu Y. Polarization-independent etching of fused silica based on electrons dynamics control by shaped femtosecond pulse trains for microchannel fabrication. OPTICS LETTERS 2014; 39:5240-5243. [PMID: 25166119 DOI: 10.1364/ol.39.005240] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We propose an approach to realize polarization-independent etching of fused silica by using temporally shaped femtosecond pulse trains to control the localized transient electrons dynamics. Instead of nanograting formation using traditional unshaped pulses, for the pulse delay of pulse trains larger than 1 ps, coherent field-vector-related coupling is not possible and field orientation is lost. The exponential growth of the periodic structures is interrupted. In this case, disordered and interconnected nanostructures are formed, which is probably the main reason of etching independence on the laser polarization. As an application example, square-wave-shaped and arc-shaped microchannels are fabricated by using pulse trains to demonstrate the advantage of the proposed method in fabricating high-aspect-ratio and three-dimensional microchannels.
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515
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Liang WX, Cai MJ, Jiang L, Xie YQ, Yuan WL, Zhang H. Ultrasonic imaging characteristics of transplanted kidneys with delayed graft function. GENETICS AND MOLECULAR RESEARCH 2014; 13:6878-84. [PMID: 25177967 DOI: 10.4238/2014.august.29.9] [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
We investigated the ultrasonic imaging characteristics of transplanted kidneys with delayed graft function (DGF). Ultrasonography was performed in 44 patients after kidney transplantation, and a time-intensity analysis was performed to compare the differences between patients with normal graft function (NGF) and those with DGF. Compared with the NGF group, the DGF group had earlier arrival time, shorter time to peak, and higher arrival intensity and peak intensity (P < 0.05). The variation-of-intensity parameters in different renal cortices increased, whereas the variation-of-time parameter decreased, in those with DGF (P < 0.05). In conclusion, compared with the NGF group, the microcirculation perfusion of transplanted kidneys in the DGF group showed higher perfusion with earlier arrival time, shorter time to peak, and higher arrival intensity and peak intensity. In addition, the intensity variations of contrast agent in different renal cortices from patients with DGF were greater, whereas the variations in perfusion time were smaller than those in patients with NGF.
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516
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Wang N, Jiang L, Shi X, Poon KMV, Yuen KY, Zheng BJ, Zhang L, Wang X. Complex structure of MERS-CoV spike glycoprotein with human receptor DPP4. Acta Crystallogr A Found Adv 2014. [DOI: 10.1107/s2053273314084034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Recently identified the Middle East Respiratory Syndrome Coronavirus (MERS-CoV) causes severe and fatal acute respiratory illness in human. No prophylactic and therapeutic agents specifically against MERS-CoV are currently available. Entry of MERS-CoV into the target cells depends on binding of receptor-binding domain (RBD) on viral envelope spike glycoprotein to the cellular receptor dipeptidyl peptidase 4 (DPP4). We report the 3.0 angstrom-resolution crystal structure of MERS-CoV RBD bound to the extracellular domain of DPP4. The structure shows that MERS-CoV RBD consists of a core and a receptor binding subdomain. MERS-CoV RBD and related SARS-CoV RBD share a high degree of structural similarity in their core subdomains, but are notably divergent in the receptor binding subdomain. Structural and mutagenesis analyses identified several key residues in the receptor binding subdomain of RBD that are critical for viral binding to DPP4 and entry into the target cell. Two RBD-specific potent human neutralizing monoclonal antibodies were derived from single-chain variable region fragments (scFvs) of nonimmune human antibody library. They inhibited infection of both pseudotyped and live MERS-CoV with IC50 at nanomolar concentration. Biochemical analysis indicated that these two antibodies blocked RBD interaction with DPP4 on the cell surface.
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517
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Ye M, Jiang L, Mao K, Wang Y, Wang Z, Wu R. Functional mapping of seasonal transition in perennial plants. Brief Bioinform 2014; 16:526-35. [DOI: 10.1093/bib/bbu025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Accepted: 06/25/2014] [Indexed: 11/13/2022] Open
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518
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Yong X, Chen Y, Tao R, Zeng Q, Liu Z, Jiang L, Ye L, Lin X. Periodontopathogens and human β-defensin-2 expression in gingival crevicular fluid from patients with periodontal disease in Guangxi, China. J Periodontal Res 2014; 50:403-10. [DOI: 10.1111/jre.12220] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2014] [Indexed: 01/09/2023]
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519
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Mukaide T, Hattori Y, Misawa N, Funahashi S, Jiang L, Hirayama T, Nagasawa H, Toyokuni S. Histological detection of catalytic ferrous iron with the selective turn-on fluorescent probe RhoNox-1 in a Fenton reaction-based rat renal carcinogenesis model. Free Radic Res 2014; 48:990-5. [DOI: 10.3109/10715762.2014.898844] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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520
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Gao R, Jiang Y, Jiang L. Multi-phase-shifted helical long period fiber grating based temperature-insensitive optical twist sensor. OPTICS EXPRESS 2014; 22:15697-15709. [PMID: 24977829 DOI: 10.1364/oe.22.015697] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A compact temperature-insensitive optical fiber twist sensor based on multi-phase-shifted helical long period fiber grating has been proposed and experimentally demonstrated in this paper. A multi-phase-shifted helical long period fiber grating is fabricated with a multi-period rotation technology. A π/2 and a 3π/2 phase shift is introduced in the helical long period fiber grating by changing the period. The helical pitch can be effectively changed with a different twist rate, which is measured by calculating the wavelength difference between two phase shift peaks. Although the wavelength of the phase shift peak also shifts with a change of the temperature, the wavelength difference between two phase shift peaks is constant due to two fixed phase shifts in the helical long period fiber grating, which is extremely insensitive to temperature change for the multi-phase-shifted helical long period fiber grating. The experimental results show that a sensitivity of up to 1.959 nm/(rad/m) is achieved.
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521
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Cai Y, Zhong Z, Guo X, Gu X, Chiu T, Kearney V, Liu H, Jiang L, Chen S, Yordy J, Nedzi L, Mao W. TU-A-9A-01: A Precise Deformable Image Registration System Using Feature-Based Irregular Meshes. Med Phys 2014. [DOI: 10.1118/1.4889236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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522
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Wijnen JP, Jiang L, Greenwood TR, Cheng M, Döpkens M, Cao MD, Bhujwalla ZM, Krishnamachary B, Klomp DWJ, Glunde K. Silencing of the glycerophosphocholine phosphodiesterase GDPD5 alters the phospholipid metabolite profile in a breast cancer model in vivo as monitored by (31) P MRS. NMR IN BIOMEDICINE 2014; 27:692-9. [PMID: 24764256 PMCID: PMC4162314 DOI: 10.1002/nbm.3106] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Revised: 03/06/2014] [Accepted: 03/09/2014] [Indexed: 05/18/2023]
Abstract
Abnormal choline phospholipid metabolism is an emerging hallmark of cancer, which is implicated in carcinogenesis and tumor progression. The malignant metabolic phenotype is characterized by high levels of phosphocholine (PC) and relatively low levels of glycerophosphocholine (GPC) in aggressive breast cancer cells. Phosphorus ((31) P) MRS is able to non-invasively detect these water-soluble metabolites of choline as well as ethanolamine phospholipid metabolism. Here we have investigated the effects of stably silencing glycerophosphoester diesterase domain containing 5 (GDPD5), which is an enzyme with glycerophosphocholine phosphodiesterase activity, in MDA-MB-231 breast cancer cells and orthotopic tumor xenografts. Tumors in which GDPD5 was stably silenced with GDPD5-specific shRNA contained increased levels of GPC and phosphoethanolamine (PE) compared with control tumors.
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523
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Rozario T, Bereg S, Chiu T, Liu H, Kearney V, Jiang L, Mao W. SU-E-J-23: An Accurate Algorithm to Match Imperfectly Matched Images for Lung Tumor Detection Without Markers. Med Phys 2014. [DOI: 10.1118/1.4888074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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524
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Dominiak BC, Sundaralingam S, Jiang L, Fanson BG, Collins SR, Banos C, Davies JB, Taylor PW. Evaluating irradiation dose for sterility induction and quality control of mass-produced fruit fly Bactrocera tryoni (Diptera: Tephritidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2014; 107:1172-1178. [PMID: 25026679 DOI: 10.1603/ec13421] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The sterile insect technique has been routinely used to eradicate fruit fly Bactrocera tryoni (Froggatt) incursions. This study considers whether fly quality in a mass-rearing facility can be improved by reducing irradiation doses, without sacrificing reproductive sterility. Pupae were exposed to one of five target irradiation dose ranges: 0, 40-45, 50-55, 60-65, and 70-75 Gy. Pupae were then assessed using routine quality control measures: flight ability, sex ratio, longevity under nutritional stress, emergence, and reproductive sterility. Irradiation did not have a significant effect on flight ability or sex ratio tests. Longevity under nutritional stress was significantly increased at 70-75 Gy, but no other doses differed from 0 Gy. Emergence was slightly reduced in the 50-55, 60-65, and 70-75 Gy treatments, but 40-45 Gy treatments did not differ from 0 Gy, though confounding temporal factors complicate interpretation. Reproductive sterility remained acceptable (> 99.5%) for all doses--40-45 Gy (99.78%), 50-55 Gy (100%), 60-65 Gy (100%), and 70-75 Gy (99.99%). We recommend that B. tryoni used in sterile insect technique releases be irradiated at a target dose of 50-55 Gy, providing improved quality and undiminished sterility in comparison with the current 70-75 Gy standard while also providing a substantial buffer against risk of under dosing.
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525
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Amugongo SK, Yao W, Jia J, Lay YAE, Dai W, Jiang L, Walsh D, Li CS, Dave NKN, Olivera D, Panganiban B, Ritchie RO, Lane NE. Effects of sequential osteoporosis treatments on trabecular bone in adult rats with low bone mass. Osteoporos Int 2014; 25:1735-50. [PMID: 24722767 PMCID: PMC4394748 DOI: 10.1007/s00198-014-2678-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 09/03/2013] [Indexed: 10/25/2022]
Abstract
UNLABELLED We used an osteopenic adult ovariectomized (OVX) rat model to evaluate various sequential treatments for osteoporosis, using FDA-approved agents with complementary tissue-level mechanisms of action. Sequential treatment for 3 months each with alendronate (Aln), followed by PTH, followed by resumption of Aln, created the highest trabecular bone mass, best microarchitecture, and highest bone strength. INTRODUCTION Individual agents used to treat human osteoporosis reduce fracture risk by ∼ 50-60%. As agents that act with complementary mechanisms are available, sequential therapies that mix antiresorptive and anabolic agents could improve fracture risk reduction, when compared with monotherapies. METHODS We evaluated bone mass, bone microarchitecture, and bone strength in adult OVX, osteopenic rats, during different sequences of vehicle (Veh), parathyroid hormone (PTH), Aln, or raloxifene (Ral) in three 90-day treatment periods, over 9 months. Differences among groups were evaluated. The interrelationships of bone mass and microarchitecture endpoints and their relationship to bone strength were studied. RESULTS Estrogen deficiency caused bone loss. OVX rats treated with Aln monotherapy had significantly better bone mass, microarchitecture, and bone strength than untreated OVX rats. Rats treated with an Aln drug holiday had bone mass and microarchitecture similar to the Aln monotherapy group but with significantly lower bone strength. PTH-treated rats had markedly higher bone endpoints, but all were lost after PTH withdrawal without follow-up treatment. Rats treated with PTH followed by Aln had better bone endpoints than those treated with Aln monotherapy, PTH monotherapy, or an Aln holiday. Rats treated initially with Aln or Ral, then switched to PTH, also had better bone endpoints, than monotherapy treatment. Rats treated with Aln, then PTH, and returned to Aln had the highest values for all endpoints. CONCLUSION Our data indicate that antiresorptive therapy can be coupled with an anabolic agent, to produce and maintain better bone mass, microarchitecture, and strength than can be achieved with any monotherapy.
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