36 results on '"Lu PF"'
Search Results
2. Clinical and survival outcomes of colectomy for transverse colon cancer in elderly patients.
- Author
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Liu XJ, Lang ZQ, Zhang W, Zhang XQ, Lu PF, Xie F, Liang B, Huang ZP, and Zou ZH
- Subjects
- Aged, Humans, Retrospective Studies, Colectomy adverse effects, Disease-Free Survival, Colon, Transverse surgery, Colonic Neoplasms surgery
- Abstract
It remains controversial whether elderly patients with transverse colon cancer present worse prognoses. Our study utilized evidence from multi-center databases to evaluate the perioperative and oncology outcomes of radical resection of colon cancer in elderly and nonelderly patients. In this study, we analyzed 416 patients with transverse colon cancer who underwent radical surgery from January 2004 to May 2017, including 151 elderly (aged ≥ 65 years) and 265 nonelderly (aged < 65 years) patients. We retrospectively compared the perioperative and oncological outcomes between these 2 groups. The median follow-up in the elderly and nonelderly groups was 52 and 64 months, respectively. There were no significant differences in the overall survival (OS) (P = .300) and disease-free survival (DFS) (P = .380) between the elderly and nonelderly groups. However, the elderly group had longer hospital stays (P < .001), a higher complication rate (P = .027), and fewer lymph nodes harvested (P = .002). The N classification and differentiation were significantly associated with OS based on univariate analysis, and the N classification was an independent prognostic factor for OS based on multivariate analysis (P < .05). Similarly, the N classification and differentiation were significantly correlated with the DFS based on univariate analysis. However, multivariate analysis indicated that the N classification was an independent prognostic factor for DFS (P < .05). In conclusion, the survival and surgical outcomes in elderly patients were similar to nonelderly patients. The N classification was an independent factor for OS and DFS. Even though elderly patients with transverse colon cancer present a higher surgical risk than nonelderly patients, performing radical resection in elderly patients can be an appropriate choice for treatment., Competing Interests: The authors have no conflicts of interest to disclose., (Copyright © 2023 the Author(s). Published by Wolters Kluwer Health, Inc.)
- Published
- 2023
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3. (E)-2-styrylanthracene-9,10-dione derivatives as novel fluorescent probes: synthesis, photophysical properties and application in mitochondria imaging.
- Author
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Wang ZR, Zhang TJ, Wang QY, Xu EY, Zhang X, Zhang ZH, Lu PF, Zhao HY, Wang L, and Meng FH
- Subjects
- Fluorescence, Diagnostic Imaging, Fluorescent Dyes chemistry, Mitochondria
- Abstract
Our previous work firstly reported that (E)-2-styrylanthracene-9,10-dione is a novel fluorescent core (EK01) with the ability of specific mitochondria imaging. In this effort, we mainly focused our attention on the structure-photophysical property relationship and application in cells imaging of this new fluorescent chemotype. A series of the structural derivatives (TZ series) were designed and synthesized by introducing some substituents onto the 2-styryl moiety. The structure-photophysical property relationship analysis suggested that TZ03 is an excellent fluorescent molecular building block with the property of fluorescent "turn-on" effect after the modification of acylation, and TZ07 is an excellent fluorescent dye with a series of advantages such as high fluorescence intensity (F
max = 4049.0 in CH2 Cl2 , 25.80 μM), moderate molar extinction coefficients (3.77 × 103 -5.93 × 103 mol-1 ∙L∙cm-1 ), strong fluorescence quantum yield (Φmax = 0.739 in CH2 Cl2 ), large Stokes shift (99.0 nm-161.8 nm) and well biological tolerance. As a classical D-π-A structure, the ICT characteristic of TZ07 was analyzed through spectroscopy verification and DFT calculations. Furthermore, optimized compound TZ07 was successfully applied in the living cells imaging with the excellent selectivity to mitochondria in a green fluorescent form. It was also suggested that the mechanism of TZ07 targeting mitochondria is independent of mitochondrial membrane potential, but probably related to the mitochondrial complex I. These findings may provide some insights into the development of novel mitochondria-targeted fluorescent probes., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier B.V. All rights reserved.)- Published
- 2023
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4. Flanged Bentall Plus Cabrol Procedure for Interventricular Septal Dissection in Behçet's Disease.
- Author
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Zhuang XM, Zhong XB, Lu PF, and Guo HW
- Subjects
- Humans, Aortic Valve surgery, Behcet Syndrome complications, Behcet Syndrome surgery, Ventricular Septum
- Abstract
Behçet's disease with interventricular septal dissection is extremely rare, and its surgical treatment is even more challenging. One such treatment with interventricular septal dissection repair was followed by the flanged Bentall and Cabrol techniques. The flange of the flanged composite graft was attached to the left ventricular outflow tract instead of the fragile annulus. The Cabrol procedure was performed to reduce anastomotic tension at the coronary button sites. Good short-term results were achieved., (Copyright © 2023 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.)
- Published
- 2023
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5. Phase-controlled photon blockade in optomechanical systems.
- Author
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Gao YP, Cao C, Lu PF, and Wang C
- Abstract
The manipulation of photons is a key technology for obtaining optical quantum information. In this study, we present a phase-modulated optomechanical system comprising two coupled cavity resonators and illustrate the phase-controlled photon blockade in the system. The coupling phase of the cavities reveals the interference of photons and introduces an unconventional photon-blockade effect. We also study the influence of the energy level fineness on the photon blockade and resonant frequency of the mechanical mode. Numerical simulations demonstrate that photon blockade can occur over a wide range of system parameters. These results have several implications for understanding the role of the state phase in quantum cavity optomechanics and provide a promising method for the realization of optomechanical quantum devices using photon blockade., Competing Interests: The authors declare that they have no conflicts of interest in this work., (© 2022 The Authors. Publishing Services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.)
- Published
- 2022
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6. Discovery of 4-(phenoxymethyl)-1H-1,2,3-triazole derivatives as novel xanthine oxidase inhibitors.
- Author
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Zhang TJ, Zhang Y, Zhang ZH, Wang ZR, Zhang X, Hu SS, Lu PF, Guo S, and Meng FH
- Subjects
- Animals, Dose-Response Relationship, Drug, Enzyme Inhibitors chemical synthesis, Enzyme Inhibitors chemistry, Hyperuricemia chemically induced, Hyperuricemia drug therapy, Hyperuricemia metabolism, Ligands, Models, Molecular, Molecular Structure, Oxonic Acid, Rats, Structure-Activity Relationship, Triazoles chemical synthesis, Triazoles chemistry, Uric Acid antagonists & inhibitors, Uric Acid blood, Xanthine Oxidase metabolism, Drug Discovery, Enzyme Inhibitors pharmacology, Triazoles pharmacology, Xanthine Oxidase antagonists & inhibitors
- Abstract
A series of 4-(phenoxymethyl)-1H-1,2,3-triazole derivatives were designed, synthesized, and evaluated for their xanthine oxidase (XO) inhibitory activities. Among these compounds, 9m emerged as the most effective XO inhibitor with an IC
50 value of 0.70 μM, which was approximately 14-fold more potent than allopurinol. Additionally, compound 9m displayed favorable drug-like properties with ligand efficiency (LE) and lipophilic ligand efficiency (LLE) values of 0.33 and 3.41, respectively. We further explored the binding mode of 9m in complex with XO by molecular docking and molecular dynamics studies. In vivo hypouricemic studies also suggested that 9m could effectively lower the serum uric acid levels of rat. In summary, compound 9m could be a promising lead for further development of XO inhibitors., (Copyright © 2022 Elsevier Ltd. All rights reserved.)- Published
- 2022
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7. Clinical and Pathological Implications of Increases in Tonsillar CD19 + CD5 + B Cells, CD208 + Dendritic Cells, and IgA1-positive Cells of Immunoglobulin A Nephropathy.
- Author
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Cai Y, Chen MX, Deng YJ, Liu LL, Lin XP, Lu PF, Guo YY, and Han M
- Subjects
- Adolescent, Adult, Antigens, CD19, CD5 Antigens, Female, Humans, Immunoglobulin A, Lysosomal Membrane Proteins, Male, Middle Aged, Neoplasm Proteins, Palatine Tonsil cytology, Young Adult, B-Lymphocytes, Dendritic Cells, Glomerulonephritis, IGA immunology, Palatine Tonsil immunology
- Abstract
Objective: Several studies indicated that tonsillectomy can improve the prognosis of patients with immunoglobulin A nephropathy (IgAN). However, the relationship between tonsillar immunity and IgAN is still unclear., Methods: A total of 14 IgAN patients were recruited in the current study from May 2015 to April 2016 in Tongji Hospital. B cells, dendritic cells (DCs), and IgA1 positive cells in human tonsils were detected using immunofluorescence and immunohistochemistry. Correlations between these cells and clinicopathologic features were evaluated., Results: CD19
+ CD5+ B cells were predominantly located in germinal centers and mantle zones of lymphoid follicles, the CD208+ DCs were distributed in the interfollicular and subepithelial area, and IgA1-positive cells were predominantly detected in mantle zones of lymphoid follicles and subepithelial tissues. The numbers of CD19+ CD5+ B cells, CD208+ DCs, and IgA1-positive cells in tonsillar tissues from IgAN patients were significantly higher than those in the normal controls (P<0.01, respectively). CD19+ CD5+ B cells, CD208+ DCs, and IgA1-positive cells in tonsillar tissues were significantly associated with 24-h proteinuria levels and tubular atrophy/interstitial fibrosis of IgAN., Conclusion: CD19+ CD5+ B cells, CD208+ DCs, and IgA1-positive cells in tonsillar tissues might be involved in the pathogenesis of IgAN., (© 2022. Huazhong University of Science and Technology.)- Published
- 2022
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8. Platelet Doubling After First Decitabine Cycle Predicts Response and Survival of Myelodysplastic Syndrome Patients.
- Author
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Lu PF, Deng LN, Meng FK, Wang Y, Xiao M, and Li DJ
- Subjects
- Aged, Antimetabolites, Antineoplastic administration & dosage, Decitabine administration & dosage, Female, Humans, Male, Prognosis, Antimetabolites, Antineoplastic pharmacology, Blood Platelets drug effects, Decitabine pharmacology, Myelodysplastic Syndromes drug therapy, Outcome Assessment, Health Care
- Abstract
Objective: Although the effect of decitabine on myelodysplastic syndrome (MDS) has been demonstrated, merely a proportion of patients respond to therapy, and no well-recognized predictors have been identified. This study was conducted to investigate the effectiveness of decitabine in real-world clinical practice, and determine the predictive factors of response and overall survival (OS) in MDS patients., Methods: Clinical and pathological data were collected from 94 patients and analyzed. These patients were reclassified according to the 2016 World Health Organization classification criteria, and restratified by International Prognostic Scoring System prognostic scores. The response evaluation was performed according to the 2006 modified International Working Group response criteria., Results: In this study, 62% of patients responded to decitabine. Among these patients, 15 patients (16%) obtained complete remission (CR), 15 patients (16%) obtained marrow CR with hematologic improvement (HI), 20 patients (21%) obtained marrow CR without HI, and 8 patients (9%) only obtained HI, and no patient botained partial remission. The OS of the responders was significantly longer than that of non-responders (67 months vs. 7 months, P<0.001). The OS in patients with and without platelet doubling was significantly different in both the low/intermediate and high/very high risk groups (P=0.0398 and P=0.0330). The multivariate analysis revealed that platelet doubling after the first decitabine cycle is an independent predictor of response and OS in MDS patients (P=0.002 and P=0.008)., Conclusion: Decitabine is effective for treating MDS patients in real-world clinical practice. Furthermore, platelet doubling after the first decitabine cycle can be used as a predictor of response and survival in MDS patients., (© 2022. Huazhong University of Science and Technology.)
- Published
- 2022
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9. Interleukin-7 Is Associated with Clinical and Pathological Activities in Immunoglobulin A Nephropathy and Protects the Renal Proximal Tubule Epithelium from Cellular Fibrosis.
- Author
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Deng YJ, Lin XP, Li XQ, Lu PF, Cai Y, Liu LL, Pei GC, and Han M
- Subjects
- Adolescent, Adult, Animals, Autophagy, Biomarkers metabolism, Case-Control Studies, Cells, Cultured, Disease Models, Animal, Disease Progression, Female, Glomerulonephritis, IGA immunology, Glomerulonephritis, IGA metabolism, Humans, Kidney Tubules, Proximal cytology, Kidney Tubules, Proximal metabolism, Male, Mice, Middle Aged, Rats, Signal Transduction, TOR Serine-Threonine Kinases metabolism, Transforming Growth Factor beta1 metabolism, Young Adult, Down-Regulation, Glomerulonephritis, IGA pathology, Interleukin-7 blood, Interleukin-7 metabolism, Kidney Tubules, Proximal pathology
- Abstract
Objective: Diagnosis of immunoglobulin A nephropathy (IgAN) requires the evaluation of renal biopsy specimens. However, renal biopsy is an invasive procedure and is not frequently performed for various reasons. Thus, recognized noninvasive biomarkers for predicting IgAN progression are urgently needed., Methods: In the present study, we included 86 IgAN patients with renal biopsy from June 2015 to May 2016 and had their plasma interleukin-7 (IL-7) level measured with ELISA. The association between the plasma IL-7 level and clinico-pathological characteristics was analyzed. Immunohistochemical staining was used to assay the in situ expression of IL-7 in vivo. Western blotting was performed to examine the production of extracellular matrix, p-mTOR and the markers of autophagy under the treatment of IL-7 after TGF-β1 stimulation in renal tubular epithelial cells., Results: IL-7 was significantly decreased in patients with IgAN compared to healthy subjects (2.3077 vs. 8.6294 pg/mL, P<0.0001). There was a significant difference in the plasma IL-7 level between tubular atrophy/interstitial fibrosis T0 and T2 classes (P=0.0064). A lower plasma IL-7 value in patients at the time of biopsy indicated a poor renal outcome. In addition, IL-7 was over-expressed in renal tubular epithelial cells and significantly attenuated transforming growth factor βl-induced extracellular matrix production by suppression of cellular autophagy via activation of mTOR1 signaling., Conclusion: These results suggested that IL-7 might be a noninvasive biomarker for predicating IgAN. It protected renal proximal tubular epithelial cells from cellular fibrosis by inhibiting autophagy via mTORl signaling., (© 2021. Huazhong University of Science and Technology.)
- Published
- 2021
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10. Peach volatile emission and attractiveness of different host plant volatiles blends to Cydia molesta in adjacent peach and pear orchards.
- Author
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Lu PF and Qiao HL
- Subjects
- Animals, Fruit chemistry, Gas Chromatography-Mass Spectrometry, Seasons, Behavior, Animal drug effects, Moths physiology, Odorants analysis, Prunus persica chemistry, Pyrus chemistry, Volatile Organic Compounds analysis
- Abstract
The oriental fruit moth (OFM), Cydia (= Grapholitha) molesta, is a highly damaging pest; peaches are its primary host, and pears serve as post-peach secondary hosts during the late season in China. We collected volatiles from detached peach shoots and fruits, and identified them with gas chromatography-mass spectrometry (GC-MS). Antennally active compounds were identified by gas chromatography-electroantennogram detection (GC-EAD), and these were further tested in the laboratory and field. We detected consistent electroantennographic activity was for ten compounds. Significantly more C. molesta females were caught with a mixture of female EAD-active compounds identified from the detached matured peach fruits (nonanal, butyl acetate, 3-methylbutyl acetate, hexyl acetate, (Z)-3-hexenyl acetate, linalool and farnesene) than other mixtures mimicking the volatile profile from detached matured fruits or shoots. We identified a new GC-EAD active mixture from intact peach shoots composed of nonanal, (Z)-3-hexenyl acetate, (E)-β-ocimene, and 6-methyl-5-hepten-2-one. In the field test, the background odour of orchards could affect trap catches, and two peach-derived blends together with two previously known pear-derived blends were proven to be able to monitor the seasonal OFM population dispersal in adjacent orchards. These host plant blends will be effective for further designing candidate attractants for season-long C. molesta population dynamic monitoring.
- Published
- 2020
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11. [Electrophysiological and behavioral responses of gall midge, Jaapiella sp. to volatiles of host plant Lycium barbarum ].
- Author
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Zhang F, Xu CQ, Chen J, Ma M, Lu PF, Liu S, Li JL, and Qiao HL
- Subjects
- Animals, Female, Gas Chromatography-Mass Spectrometry, Oviposition, Plants, Diptera, Lycium, Volatile Organic Compounds
- Abstract
Plant-derived volatiles are important for guiding herbivorous insects to their host plants. Jaapiella sp. (Diptera: Cecidomyiidae) is the most serious pest of Lycium barbarum . The young flower buds of L. barbarum are attractive to females of Jaapiella sp. for oviposition in the field. In this study, we compared response of Jaapiella sp. to volatiles from flower buds of L. barbarum at different stages, and clarified the crucial semiochemicals attracting Jaapiella sp. to lay eggs. Volatiles from young and mature flower buds were collected using SPME, and then identified and quantified by gas chromatography-mass spectrometry (GC-MS). Both electrophysiological and behavior experiments were conducted to measure the attraction of eight synthetic compounds to females and screen the crucial components based on gas chromatography-electroantennogram detection (GC-EAD) and Y-tube bioassays, respectively. Results showed that qualitative and quantitative diffe-rences between two odor profiles. Consistent electroantennographic response was observed for eight compounds from headspace collections, of which five synthetic compounds (3-carene, camphene, terpinolene, d-limonene, and (+)-pinene) were essential for significant preference or avoidance. Our results indicated that these compounds from L. barbarum flower buds could be effective candidates as oviposition attractant or repellents of Jaapiella sp., which would be helpful in the exploitation of new control agent to Jaapiella sp. in the field.
- Published
- 2020
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12. Sample Preparation Method of Scanning and Transmission Electron Microscope for the Appendages of Woodboring Beetle.
- Author
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Zhang YR, Qiao HL, Ren LL, Wang R, and Lu PF
- Subjects
- Animals, Sensilla, Tissue Fixation, Coleoptera ultrastructure, Microscopy, Electron, Scanning methods, Microscopy, Electron, Transmission methods, Specimen Handling
- Abstract
This report described sample preparation methods that scanning and transmission electron microscope observations, demonstrated by preparing appendages of the woodboring beetle, Chlorophorus caragana Xie & Wang (2012), for both types of electron microscopy. The scanning electron microscopy (SEM) sample preparation protocol was based on sample chemical fixation, dehydration in a series of ethanol baths, drying, and sputter-coating. By adding Tween 20 (Polyoxyethylene sorbitan laurate) to the fixative and the wash solution, the insect body surface of woodboring beetle was washed more cleanly in SEM. This study's transmission electron microscopy (TEM) sample preparation involved a series of steps including fixation, ethanol dehydration, embedding in resin, positioning using fluorescence microscopy, sectioning, and staining. Fixative with Tween 20 enabled penetrate the insect body wall of woodboring beetle more easily than it would had been without Tween 20, and subsequently better fixed tissues and organs in the body, thus yielded clear transmission electron microscope observations of insect sensilla ultrastructures. The next step of this preparation was determining the positions of insect sensilla in the sample embedded in the resin block by using fluorescence microscopy to increase the precision of target sensilla positioning. This improved slicing accuracy.
- Published
- 2020
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13. Effect of Xuefu Zhuyu Capsule () on Angiogenesis in Hindlimb Ischemic Rats.
- Author
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Shi WL, Lu PF, Gao D, Song J, and Chen KJ
- Subjects
- Animals, Disease Models, Animal, Dose-Response Relationship, Drug, Hindlimb drug effects, Polymerase Chain Reaction, Rats, Rats, Sprague-Dawley, Angiogenesis Inducing Agents pharmacology, Drugs, Chinese Herbal pharmacology, Hindlimb blood supply, Ischemia drug therapy, Neovascularization, Physiologic drug effects
- Abstract
Objective: To investigate the effect and mechanism of Xuefu Zhuyu Capsule (, XZC) on pro-angiogenesis in the hindlimb ischemic model rats., Methods: A total of 100 Sprague Dawley rats were randomly divided into a model group, a regular-dose XZC group (0.48 g•kg
-1 •d-1 ) and a high-dose XZC group (0.96 g•kg-1 •d-1 ) using random number table method. The model of hindlimb ischemic rats were made through femoral artery embolization with Bletilla microsphere agent. XZC were given on the first day after embolization surgery and lasted 5 days. Finally 72 models were obtained with 12 in each group for each time point. The lower ischemic limb was amputated on the third day after embolization surgery. Histopathological characters and the number of blood vessels of granulation tissues were observed at 36 and 48 h after amputation, respectively. The main genes were obtained from microarray analysis and were validated using real-time quantitative polymerase chain reaction., Results: The vascular number of granulation tissues at both 36 and 48 h were characterized by new and fresh vessels. The number of angiogenesis in the high-dose XZC group at 36 and 48 h was greater compared with that in the regular-dose XZC and model groups (P<0.01), and high-dose XZC at 36 h increased more vessels than that at 48 h (P<0.01). Consequently, granulation tissues from the high-dose XZC group at 36 h were chosen for microarray analysis. In all, 2,085 differentially expressed genes (DEGs) were detected and 25 DEGs were determined to be directly related to angiogenesis. Four biological process terms were found including angiogenesis, regulation of angiogenesis, positive regulation of angiogenesis, and positive regulation of vascular endothelial growth factor receptor signaling pathway (P<0.05). Microarray analysis also showed 49 pathways including 11 pathways related to angiogenesis., Conclusion: XZC promoted angiogenesis moderately and the mechanism involved multiple DEGs and multiple pathways.- Published
- 2020
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14. [Ultrastructure observations on antennal sensilla of Heortia vitessoides the most serious pest of Aquilaria sinensis].
- Author
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Qiao HL, Lu PF, Liu S, Xu CQ, Guo K, Xu R, and Chen J
- Subjects
- Animals, China, Female, Male, Microscopy, Electron, Scanning, Lepidoptera anatomy & histology, Sensilla ultrastructure, Thymelaeaceae anatomy & histology
- Abstract
Heortia vitessoides is the most serious pest of Aquilaria sinensis,which is an economically important evergreen tree native to China and is the principal source of Chinese agarwood. In severe infestations,the insects completely eat up the leaves of A. sinensis,causing severe economic losses. In a more recent study,we found that the antennal sensilla of adult play important roles in the host location,mating and oviposition of H. vitessoides. Here,the external morphology of the antennal sensilla of H. vitessoides were examined using scanning electron microscopy. The result showed that the antennae of both sexes of H. vitessoides were filiform in shape,which consist of the scape,pedicel and about 64 segments of flagellomeres. Eight morphological sensilla types were recorded in both sexes,including sensilla trichodea,sensilla chaetica,sensilla basiconica,sensilla coeloconica,sensilla styloconica,sensilla auricillica,sensilla squamiformia and böhm bristle. Major differences were recorded in the distribution and quantity of different sensilla types in each segment of antenna. The sensillas are almost confined to the ventral and lateral surfaces rather than the back side of antennae. Antennal flagella contained the most sensilla while the scape and pedicel segments only contained böhm bristles and sensilla squamiformias. Sensilla trichodea Ⅲ were only found on male antennae. These results are discussed in relation to the possible roles of the sensilla types in the host location,mating and oviposition selection behavior of H. vitessoides.
- Published
- 2019
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15. Rab37 mediates exocytosis of secreted frizzled-related protein 1 to inhibit Wnt signaling and thus suppress lung cancer stemness.
- Author
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Cho SH, Kuo IY, Lu PF, Tzeng HT, Lai WW, Su WC, and Wang YC
- Subjects
- Aged, Animals, Biomarkers, Tumor metabolism, Cell Line, Tumor, Female, Gene Expression Regulation, Neoplastic physiology, Humans, Male, Mice, Mice, Inbred BALB C, Octamer Transcription Factor-3 metabolism, Prognosis, Exocytosis physiology, Intercellular Signaling Peptides and Proteins metabolism, Lung Neoplasms metabolism, Lung Neoplasms pathology, Membrane Proteins metabolism, Wnt Signaling Pathway physiology, rab GTP-Binding Proteins metabolism
- Abstract
Recent studies have revealed that dysregulated Rab small GTPase-mediated vesicle trafficking pathways are associated with cancer progression. However, whether any of the Rabs plays a suppressor role in cancer stemness is least explored. Rab37 has been postulated as a tumor suppressive small GTPase for trafficking anti-tumor cargos. Here, we report a previously uncharacterized mechanism by which Rab37 mediates exocytosis of secreted frizzled-related protein-1 (SFRP1), an extracellular antagonist of Wnt, to suppress Wnt signaling and cancer stemness in vitro and in vivo. Reconstitution experiments indicate that SFRP1 secretion is crucial for Rab37-mediated cancer stemness suppression and treatment with SRPP1 recombinant protein reduces xenograft tumor initiation ability. Clinical results confirm that concordantly low Rab37, low SFRP1, and high Oct4 stemness protein expression profile can be used as a biomarker to predict poor prognosis in lung cancer patients. Our findings reveal that Rab37-mediated SFRP1 secretion suppresses cancer stemness, and dysregulated Rab37-SFRP1 pathway confers cancer stemness via the activation of Wnt signaling. Rab37-SFRP1-Wnt axis could be a potential therapeutic target for attenuating lung cancer stemness.
- Published
- 2018
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16. Ultrastructure and distribution of sensilla on the maxillary and labial palps of Chlorophorus caragana (Coleoptera: Cerambycidae).
- Author
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Zhang YR, Ren LL, Zhang L, Wang R, Yu Y, Lu PF, and Luo YQ
- Subjects
- Animals, China, Female, Male, Microscopy, Electron, Scanning, Microscopy, Electron, Transmission, Coleoptera ultrastructure, Sensilla ultrastructure
- Abstract
Chlorophorus caragana is a species of long-horned beetle that damages Caragana davazamcii Sancz. (Fabales: Papilionaceae) bushes in desert areas in China. The beetles cause substantial damage to local forestry plantations and the environment. Sensilla on the maxillary and labial palps of coleopterans a allow the insects to recognize their host plants. We used scanning and transmission electron microscopy to study the ultrastructure, distribution, and abundance of various sensilla on the maxillary and labial palps of C. caragana. We found four types of sensilla including ten subtypes: one of Böhm's bristles, three of sensilla chaetica, one of digitiform sensilla, and five of sensilla twig basiconica. The types and distribution of the sensilla on the maxillary and labial palps were highly similar between males and females. Finally, this article discusses the functions of the sensilla of related species in recognizing hosts and the significance of gustation studies in the context of the control of C. caragana., (© 2018 Wiley Periodicals, Inc.)
- Published
- 2018
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17. Efficacy of radiotherapy for the treatment of cystic echinococcosis in naturally infected sheep.
- Author
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Mao R, Zhang WB, Qi HZ, Jiang T, Wu G, Lu PF, Ainiwaer A, Shang G, Xu L, Hao J, Shou X, Li HT, Li J, Zhang SA, Bao YX, and Wen H
- Subjects
- Animals, China, Echinococcus granulosus, Female, Gene Expression Profiling, Sheep, Tomography, X-Ray Computed, Treatment Outcome, Ultrasonography, Echinococcosis diagnostic imaging, Echinococcosis radiotherapy, Echinococcosis veterinary, Liver diagnostic imaging, Liver metabolism, Liver parasitology, Sheep Diseases diagnostic imaging, Sheep Diseases radiotherapy
- Abstract
Background: Radiotherapy is commonly used to treat cancers. To date, there has been no study focusing on the effects of radiotherapy on hydatid disease in large animals. In this study, we aim to investigate the efficiency and safety of radiotherapy for treating hydatid disease caused by Echinococcus granulosus in naturally infected sheep., Methods: Ultrasound was used to screen naturally infected sheep in an echinococcosis endemic area in Xinjiang, China. A computer tomography (CT) scan confirmed the presence of hydatid cysts. Twenty sheep naturally infected with E. granulosus in the liver and/or lungs were randomly assigned into four groups receiving no irradiation, or X-ray irradiation of low (30 Gy), medium (45 Gy), and high dose (60 Gy), respectively. After three months of radiotherapy, a CT scan was performed to measure the changes in the cysts. The hepatic parasite cysts and host tissues were collected for histology and gene expression analysis., Results: In the animals subject to irradiation, no significant differences were observed in their appetite, daily activities, and weight before and after radiotherapy. Severe calcification was noticed in the cysts subject to a high dose of radiation compared with the groups subject to low and medium doses. Hematoxylin and eosin staining showed that irradiation contributed to the damage of the cyst structure and nucleus in the germinal layers. Quantitative PCR demonstrated that expression of TPX and HSP70 significantly decreased in a dose-dependent manner (P < 0.05). The expression of the EPC1 decreased in the medium- and high-dose groups compared with the low-dose group (P < 0.05). Meanwhile, the expression of radiation-related apoptosis genes caspase-3 and Gadd45 decreased with an increase in the irradiation dose., Conclusions: Radiotherapy is an option with satisfactory efficiency and safety for treating cystic echinococcosis in sheep with partial response or stable disease at month 3. In future, inhibition of cystic activity using radiotherapy may serve as a new regimen for treating hydatid disease.
- Published
- 2017
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18. [Spectroscopic Studies on the Host Plant Selection Mechanism of Trabala vishnou gigantina Yang (Lepidoptera: Lasiocampidae)].
- Author
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Wen DM, Lu PF, Luo YQ, Zhou JC, and Gao YW
- Subjects
- Animals, China, Larva, Plants, Spectroscopy, Fourier Transform Infrared, X-Ray Diffraction, Lepidoptera
- Abstract
Trabala vishnou gigantina Yang (Lepidoptera: Lasiocampidae) is a polyphagous forestry pest whose periodic breaking out results in great economic damage including total crop failure to forestry and fruit production in China. In this study, in order to improve the understanding of the host plant selection mechanism of T. vishnou gigantina larvae, locust, caragana, willow, poplar, apricot and sea-buckthorn were used as potential host plants for the test. Two-way choice experiment method was used to study the T. vishnou gigantina Yang feeding preferences of the six kinds of plants. Moreover, the chemical component and physical structure of six plants were analyzed with Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD). Among the six plants, T. vishnou gigantina larvae showed a strong preference for sea-buckthorn, followed by, apricot, willow, poplar, locust, and caragana. The FTIR analysis displayed that those six plants presented similar characteristic on absorption peak position, peak amount, and shape. The targets (1 154/1 733, 1 154/898) by FTIR showed that lipids and polysaccharide were major nutriments to affect the host plant selection of T. vishnou gigantina larvae. The XRD results showed that crystallinity index (CrI) also could affect the host plant selection of T. vishnou gigantina larvae. In this research, spectroscopy technology was firstly applied to the study of interactive relationship between insect and host, which would blaze a trail for intensive study of host plant selection mechanism of insect at molecular level.
- Published
- 2017
19. Effects of carbon sources on the enrichment of halophilic polyhydroxyalkanoate-storing mixed microbial culture in an aerobic dynamic feeding process.
- Author
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Cui YW, Zhang HY, Lu PF, and Peng YZ
- Subjects
- Aerobiosis, Bacteria metabolism, Batch Cell Culture Techniques, Bioreactors microbiology, Fermentation, Glucose metabolism, Pseudomonas classification, Pseudomonas growth & development, Pseudomonas metabolism, Sodium Acetate metabolism, Starch metabolism, Vibrio classification, Vibrio growth & development, Vibrio metabolism, Bacteria classification, Bacteria growth & development, Carbon metabolism, Polyhydroxyalkanoates metabolism
- Abstract
Microbial polyhydroxyalkanoate (PHA) production serves as a substitute for petroleum-based plastics. Enriching mixed microbial cultures (MMCs) with the capacity to store PHA is a key precursor for low-cost PHA production. This study investigated the impact of carbon types on enrichment outcomes. Three MMCs were separately fed by acetate sodium, glucose, and starch as an enriching carbon source, and were exposed to long-term aerobic dynamic feeding (ADF) periods. The PHA production capacity, kinetics and stoichiometry of the enrichments, the PHA composition, and the microbial diversity and community composition were explored to determine carbon and enrichment correlations. After 350-cycle enriching periods under feast-famine (F-F) regimes, the MMCs enriched by acetate sodium and glucose contained a maximum PHA content of 64.7% and 60.5% cell dry weight (CDW). The starch-enriched MMC only had 27.3% CDW of PHA. High-throughput sequencing revealed that non-PHA bacteria survived alongside PHA storing bacteria, even under severe F-F selective pressure. Genus of Pseudomonas and Stappia were the possible PHA accumulating bacteria in acetate-enriched MMC. Genus of Oceanicella, Piscicoccus and Vibrio were found as PHA accumulating bacteria in glucose-enriched MMC. Vibrio genus was the only PHA accumulating bacteria in starch-enriched MMC. The community diversity and composition were regulated by the substrate types.
- Published
- 2016
- Full Text
- View/download PDF
20. [Features of Clinical Register of Chinese Medicine and Pharmacy Based on ClinicalTrials.gov. (USA)].
- Author
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Lu PF, Liao X, Xie YM, and Wang ZG
- Subjects
- Biomedical Research, China, Databases, Factual, Humans, United States, Clinical Trials as Topic, Medicine, Chinese Traditional
- Abstract
In recent 10 years, clinical trials of Chinese medicine and pharmacy (cMP) at clinicalTrials.gov.(USA) are gradually increasing. In order to analyze features of CMP clinical register, ClinicalTrials.gov register database were comprehensively retrieved in this study. Included clinical trials were input one item after another using EXCEL. A final of 348 CMP clinical trials were included. Results showed that China occupied the first place in CMP clinical register, followed by USA. CMP clinical trials, sponsored mainly by colleges/universities and hospitals, mostly covered interventional studies on evaluating safety/effectiveness of CMP. The proportions of studies, sponsored by mainland China and companies, recruitment trials and multi-center clinical trials in interventional trials were increasing. The proportions of studies sponsored by Hong Kong and Taiwan, research completed trials, unclear research status, phase III clinical trials, and published research trials in interventional trials were decreasing. Published ratios of CMP clinical trials were quite low. There were more missing types and higher proportions in trial register information.
- Published
- 2015
21. New gall wasp species attacking chestnut trees: Dryocosmus zhuili n. sp. (Hymenoptera: Cynipidae) on Castanea henryi from southeastern China.
- Author
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Zhu DH, Liu Z, Lu PF, Yang XH, Su CY, and Liu P
- Subjects
- Animals, China, Plant Leaves parasitology, Plant Tumors parasitology, Reproduction physiology, Wasps anatomy & histology, Wasps physiology, Fagaceae parasitology, Wasps classification
- Abstract
A new gall wasp species, Dryocosmus zhuili Liu et Zhu, is herein described from the southeastern Fujian province of China. The new species induces galls on trees of Henry's chestnut, Castanea henryi, which is also a native host for the notorious Oriental chestnut gall wasp (OCGW, Dryocosmus kuriphilus Yasumatsu). D. zhuili overlaps with OCGW in emergence time and induces galls morphologically similar to that of OCGW on similar plant parts. In a previous study, we reported considerable divergence between mtDNA CO1 (mitochondrial DNA Cytochrome c oxidase subunit I) sequences of these wasps and the true OCGW wasps and suggested the existence of a cryptic species. Herein, we confirm the identity of the new species based on morphological and biological differences and provide a formal description. Although the new species is relatively easily separated from OCGW on basis of morphology, field identification involving the two species can still be problematic because of their small body size, highly similar gall morphology, and other life history traits. We further discussed the potential of the new species to be a pest for the chestnut industry and the consequences of accidental introduction of this species into nonnative areas, especially with regard to the bisexual reproduction mode of the new species in contrast to the parthenogenetic reproduction mode of OCGW., (© The Author 2015. Published by Oxford University Press on behalf of the Entomological Society of America.)
- Published
- 2015
- Full Text
- View/download PDF
22. [The necessity and feasibility of establishing technical specifications for registry of Chinese medicine clinical study].
- Author
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Lu PF, Liao X, Xie YM, and Wang ZG
- Subjects
- Biomedical Research, Humans, Registries, Medicine, Chinese Traditional standards
- Abstract
International clinical trials register is one of the global measures to realize transparency in clinical trials and also one of a powerful measure to improve the quality of clinical trials. Many scholars studying the quality of TCM clinical trials find that they are poor in quality and lack transparency. Furthermore, they find that TCM clinical trial registry has many problems. We must base on the successful experiences of WHO and international clinical trial registry to establish technical specifications for registry of traditional Chinese medicine clinical study of their own. Then, it can effectively improve the overall level of TCM clinical studies. We have suggested some concrete and feasible measures to establish technical specifications for registry of traditional Chinese medicine clinical study of their own based on the problems of TCM clinical trial registry.
- Published
- 2015
23. InPBi single crystals grown by molecular beam epitaxy.
- Author
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Wang K, Gu Y, Zhou HF, Zhang LY, Kang CZ, Wu MJ, Pan WW, Lu PF, Gong Q, and Wang SM
- Abstract
InPBi was predicted to be the most robust infrared optoelectronic material but also the most difficult to synthesize within In-VBi (V = P, As and Sb) 25 years ago. We report the first successful growth of InPBi single crystals with Bi concentration far beyond the doping level by gas source molecular beam epitaxy. The InPBi thin films reveal excellent surface, structural and optical qualities making it a promising new III-V compound family member for heterostructures. The Bi concentration is found to be 2.4 ± 0.4% with 94 ± 5% Bi atoms at substitutional sites. Optical absorption indicates a band gap of 1.23 eV at room temperature while photoluminescence shows unexpectedly strong and broad light emission at 1.4-2.7 μm which can't be explained by the existing theory.
- Published
- 2014
- Full Text
- View/download PDF
24. Ultrastructure of antennal sensilla in Hydrotaea armipes (Fallén) (Diptera: Muscidae): new evidence for taxonomy of the genus Hydrotaea.
- Author
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Wang QK, Liu XH, Lu PF, and Zhang D
- Subjects
- Animals, Male, Muscidae classification, Arthropod Antennae ultrastructure, Muscidae ultrastructure, Sensilla ultrastructure
- Abstract
The morphology and ultrastructure of the antennal sensilla of male Hydrotaea (Hydrotaea) armipes (Fallén) are examined via scanning electron microscopy in order to highlight the importance of antennal sensilla as a source of morphological characters for taxonomy and phylogeny of Hydrotaea. Antennal scape and pedicel have only one type of sensilla, the sharp-tipped chaetic sensilla, whereas antennal funiculus possesses several types of sensilla, including trichoid sensilla, two subtypes of basiconic sensilla, coeloconic sensilla and clavate sensilla. These results are compared with previously published studies on other fly species, especially on H. (H.) irritans (Fallén) and H. (Ophyra) chalcogaster (Wiedemann), and there are possible uniquely derived characters or diagnostic characters examined on antennal pedicel and antennal funiculus, which suggests either affinities and divergence between species at subgenus level. Thus, new morphological evidence is provided, which might help to develop the much disputed taxonomy of genus Hydrotaea Robineau-Desvoidy in future.
- Published
- 2014
- Full Text
- View/download PDF
25. Xiphopterella devolii (Polypodiaceae), a new species and newly recorded genus in Taiwan.
- Author
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Moore SJ, Parris BS, Kao TT, Lu PF, and Chiou WL
- Abstract
Background: Grammitid ferns are a tropical monophyletic clade nested in Polypodiaceae, containing more than 20 genera and more than 750 species. Many of them also grow in Taiwan. During the survey of recent two decades, an unknown grammitid fern was discovered and the taxonomic treatment is given herein., Results: A new species, collected from Taiwan, is recognized and named, i.e., Xiphopterella devolii S. J. Moore, Parris, & W. L. Chiou. The holotype is deposited in TAIF, and isotypes are in HAST, K, L, US, and TNS. It is also distributed on SE & S China. The genus Xiphopterella is also a new record to Taiwan., Conclusion: A new species, Xiphopterella devolii S. J. Moore, Parris, & W. L. Chiou is documented herein. The Xiphopterella is a new recorded genus in Taiwan and is first found beyond Malesia regions.
- Published
- 2013
- Full Text
- View/download PDF
26. [Explore dengzhan xixin injection effecting on outcome of coronary heart disease based on propensity score].
- Author
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Lu PF, Zeng XB, Xie YM, Yang W, Li YY, Yang W, and Wang ZG
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Female, Hospital Information Systems statistics & numerical data, Humans, Logistic Models, Male, Middle Aged, Outcome Assessment, Health Care, Pragmatic Clinical Trials as Topic, Propensity Score, Treatment Outcome, Young Adult, Coronary Disease drug therapy, Drugs, Chinese Herbal administration & dosage
- Abstract
Records of 2 325 patients with CHD were extracted from 20 hostpial information systems, who were divided into two groups, one group has 768 patients using Dengzhan Xixin, the other group has 1 557 patients without using Dengzhan Xixin. Using generalized boosted models (GBM) with propensity scores to balance confounding factors and using three Logistic regressions to analysis the cure rates of coronary heart disease. The results is that 72 knowing confounding factors between two groups, such as: age, admission condition, dying days, regression coefficients of three Logistic regressions were negative (P < 0.05), statistically, the result of using Dengzhan Xixin injection to cure coronary heart disease is significantly higher than do not using Dengzhan Xixin injection. Propensity score could be a good method to balance confounding factors in a retrospective data analysis. However it is not a prospective research, the information from this study should be carefully referred to.
- Published
- 2013
27. [Expert consensus post-marketing evaluation scheme to detect immunotoxicity of Chinese medicine in clinical populations (draft version for comments)].
- Author
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Xie YM, Zhao YB, Jiang JJ, Chang YP, Zhang W, Shen H, and Lu PF
- Subjects
- Consensus, Drug Hypersensitivity etiology, Drug Monitoring adverse effects, Drug Monitoring standards, Expert Testimony, Humans, Immunologic Techniques standards, Product Surveillance, Postmarketing standards, Th1 Cells immunology, Th2 Cells immunology, Drug Hypersensitivity immunology, Drug Monitoring methods, Drugs, Chinese Herbal adverse effects, Immunologic Techniques methods, Product Surveillance, Postmarketing methods
- Abstract
Through consensus, establish a post-marketing scheme and the technical processes to evaluate Chinese medicine's immunotoxicity on a population, as well as its beneficial influences on the immune system. Provide regulations on the collection, storage and transportation of serum samples. This article applies to the post-marketing scientific evaluation of the immunotoxicity of parenterally administered, and for other ways of taking Chinese medicine.
- Published
- 2013
28. Female sex pheromone blends and male response of the legume pod borer, Maruca vitrata (Lepidoptera: Crambidae), in two populations of mainland China.
- Author
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Lu PF, Qiao HL, and Luo YQ
- Subjects
- Animals, China, Dose-Response Relationship, Drug, Female, Gas Chromatography-Mass Spectrometry, Male, Sexual Behavior, Animal drug effects, Lepidoptera physiology, Sex Attractants pharmacology
- Abstract
The legume pod borer, Maruca vitrata (Lepidoptera: Crambidae; syn. M. testulalis), is a serious pantropical insect pest of grain legumes. Comparative studies of M. vitrata female sex pheromone components in two different geographic populations in China, Wuhan and Huazhou, confirmed that (E,E)-10,12-hexadecadienal (E10,E12-16:Ald) and (E)-10-hexadecenal (E10-16:Ald) were present in variable ratios in all pheromone gland extracts of both populations. (E,E)-10,12-hexadecadienol (E10,E12-16:OH) was always detected in minor amounts using polar DB-WAX columns, but was never detected using medium-polar DB-17 columns for the two populations. E10-16:OH was not found in any of the M. vitrata sex pheromone gland extracts. The average ratios of E10-16:Ald, E10,E12-16:Ald, and E10,E12-16:OH in the pheromone gland extracts of populations from Wuhan and Huazhou were 79.5:100:12.1 and 10.3:100:0.7, respectively. Electrophysiological testing suggested that E10,E12-16:Ald elicited the highest male electroantennography (EAG) response, followed by E10,E12-16:OH and E10-16:Ald. Field-trapping tests with single synthetic sex pheromone lures showed that E10,E12-16:OH alone could not attract males, whereas E10,E12-16:Ald or E10-16:Ald alone attracted few males. Wuhan and Huazhou males were most attracted by lures containing E10-16:Ald + E10,E12-16:Ald + E10,E12-16:OH in doses of (80 + 100 + 10) microg and (10 + 100 + 10) microg, respectively, per vial. Males could discriminate between the blends that were most attractive to their own geographic population and those that were most attractive to the reference population. Our findings suggest that geographic variation exists in the sex pheromone system of M. vitrata in China. The results are discussed with regard to the mechanisms underlying the sex pheromone variation.
- Published
- 2013
29. [Pharmacovigilance of parenterally administered salvianolate based on analysis of spontaneous reporting system data].
- Author
-
Lu PF, Xiang YY, Xie YM, Chang YP, and Wang ZG
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Child, Child, Preschool, China epidemiology, Databases, Factual, Drug-Related Side Effects and Adverse Reactions etiology, Female, Humans, Infant, Infusions, Parenteral, Male, Middle Aged, Pharmacovigilance, Plant Extracts administration & dosage, Young Adult, Adverse Drug Reaction Reporting Systems statistics & numerical data, Drug-Related Side Effects and Adverse Reactions epidemiology, Plant Extracts adverse effects
- Abstract
Spontaneous reporting system (SRS) is currently a basic method to monitor and find adverse drug reactions (ADR) signals used worldwide. This method can promptly and effectively discover ADR signals and is of great significance to effectively prevent and avoid ADRs. Parenterally administered salvianolate has the functions of activating blood circulation and removing stasis. It is mainly used in the treatment of stable angina pectoris. As the drug is widely used clinically and ADRs are increasingly reported promptly, ADR information in the national ADR monitoring center's SRS database has also increased. How to quickly and effectively identify suspicious ADRs is a major concern. This study uses BCPNN and PRR to detect early warning signals. S739 ADR case reports were identified. There were 106 types, 1 310 events, and 24 serious ADR cases ( 3.25% of 739 case reports) There wre no deaths. The ten most frequent ADRs were: rash, dizziness, itch, headache, chills and breath, nausea, palpitation, anaphylactic reaction and hot. The drugs early warning signs were dizziness, headache, nausea, itchiness and rash estimated using PRR. Early warning signs based on BCPNN were dizziness and headache. The ADRs of dizziness and headache are early warning signals associated with the nervous system.
- Published
- 2013
30. [Analysis of the volatile constituents from Loranthus delavayi].
- Author
-
Liao PY and Lu PF
- Subjects
- Carbon Dioxide, Chromatography, Supercritical Fluid, Distillation, Gas Chromatography-Mass Spectrometry, Steam, Volatilization
- Abstract
Objective: To study the volatile constituents of Loranthus delavayi., Methods: The volatile constituents were extracted by steam distillation and supercritical CO2 fluid extraction, and the chemical compositions were analyzed by GC-MS techniques., Results: Sixty-one peaks were separated and 41 of them were identified, accounting for 81.15% of the total content from the extracts of steam distillation; Ninty-tuo peaks were separated from the extracts of supercritical CO2 fluid extraction, and 46 of them were identified, accounting for 63.31% of the total content., Conclusion: There are great differences between the chemical compositions of the volatile constituents extracted by steam distillation and supercritical CO2 fluid extraction.
- Published
- 2013
31. New artificial diet for continuous rearing of the bean pod borer, Maruca vitrata.
- Author
-
Wang P, Lu PF, Zheng XL, Chen LZ, Lei CL, and Wang XP
- Subjects
- Animals, Fabaceae physiology, Insect Control, Larva growth & development, Pupa growth & development, Reproduction physiology, Glycine max physiology, Triticum physiology, Animal Husbandry methods, Diet, Moths growth & development
- Abstract
The bean pod borer, Maruca vitrata Fabricius (Lepidoptera: Crambidae), is a serious pantropical pest of grain legumes. A suitable artificial diet is desirable for producing uniform insects for commercial purposes or research. Three previously described artificial diets, 1 newly-developed artificial diet, and cowpea (Vigna unguiculata (L.) Walp. (Fabales: Fabaceae)), the natural hostplant of M. vitrata, were used for rearing M. vitrata, and the life parameters were examined. The results indicated that insects completed a full life cycle only when the larvae were fed cowpea or the diet reported by Onyango and Ochieng'-Odero ( 1993 ), called the "D-OO diet." However, the rearing efficiency (i.e., larval and pupal survival, longevity of adults, and fecundity) on the D-OO diet was inferior to the rearing efficiency on cowpea. Subsequently, a new artificial diet was formulated based on soybean powder, Glycine max (L.) Merr. (Fabales: Fabaceae), and wheat germ, Triticum aestivum L. (Poales: Poaceae). The egg production, egg hatching, larval developmental duration, and pupal survival of the M. vitrata reared on the new artificial diet were found to be significantly improved relative to the D-OO diet, but were not significantly better than on the host-plant cowpea. The optimum rearing density was 15-25 larvae per box. There were no significant changes in reproductive potential after 8 successive generations of rearing on the new diet. These results indicated that the newly developed diet could serve as a viable alternative to cowpea plant for continuous rearing of M. vitrata.
- Published
- 2013
- Full Text
- View/download PDF
32. Identification and field evaluation of pear fruit volatiles attractive to the oriental fruit moth, Cydia molesta.
- Author
-
Lu PF, Huang LQ, and Wang CZ
- Subjects
- Animals, Behavior, Animal drug effects, Female, Fruit chemistry, Gas Chromatography-Mass Spectrometry, Male, Moths physiology, Volatile Organic Compounds analysis, Moths drug effects, Pyrus chemistry, Volatile Organic Compounds pharmacology
- Abstract
Plant volatiles play a key role in host plant location of phytophagous insects. Cydia molesta is an important pest of pear fruit late in the growing season. We identified and quantified volatiles from immature and mature fruits of six pear varieties by using gas chromatography-mass spectrometry (GC-MS). Attractiveness of synthetic blends to adults based on gas chromatography-electroantennogram detection (GC-EAD) activity was investigated in both field and laboratory. Consistent electroantennographic activity was obtained for 12 compounds from headspace collections of the mature fruits of the six pear varieties. Qualitative and quantitative differences were found among six odor profiles. Among the six mixtures, the mixture of 1-hexanol, nonanal, ethyl butanoate, butyl acetate, ethyl hexanoate, hexyl acetate, hexyl butanoate, and farnesene (different isomers) with a 1:1:100:70:7:5:1:4 ratio from the variety Jimi and the mixture of nonanal, ethyl butanoate, 3-methylbutyl acetate, ethyl hexanoate, hexyl acetate, and farnesene with a 1:100:1:32:1:2 ratio from the variety Huangjin were highly attractive to both sexes in the field. However, male captures were much higher than those of females. Further wind tunnel tests proved that both sexes exhibited upwind flight to the lures, but only males landed on the source. Our finding indicates that mixtures mimicking Jimi and Huangjin volatiles attract both females and males of C. molesta, and these host volatiles may be involved in mate finding behavior.
- Published
- 2012
- Full Text
- View/download PDF
33. [Analysis of volatile compounds of inflorescence by GC-MS from Cistanche deserticola].
- Author
-
Qiao HL, Lu PF, Xu R, Chen J, Wang X, Ma WS, and Liu TN
- Subjects
- Adsorption, Cistanche growth & development, Flowers growth & development, Seasons, Time Factors, Volatile Organic Compounds chemistry, Volatile Organic Compounds isolation & purification, Cistanche chemistry, Flowers chemistry, Gas Chromatography-Mass Spectrometry methods, Volatile Organic Compounds analysis
- Abstract
Objective: To study the volatile compounds from inflorescence of Cistanche deserticola and provide basis for its utilization and seed breeding., Methods: The volatile compounds were collected by dynamic headspace adsorption and analyzed by gas chromatography-mass spectrometry (GC-MS)., Results: Forty volatile components were identified in inflorescence of Cistanche deserticola from squaring period to full-bloom period. The main components in buds of Cistanche deserticola were hydrocarbons and green leaf volatiles in squaring period. Some components were characteristic in buds and disappeared or decreased in flowers. The relative contents of some components gradually increased with the buds blooming. And some components only emerged in flowers of Cistanche deserticola. The higher content of esters and aromatics were found in flowers, which were significantly increased in comparison with the volatile compounds from buds., Conclusion: The volatile compounds from inflorescence of Cistanche deserticola were complex, consisting of various compositions and significantly different with buds blooming.
- Published
- 2012
34. Apolipoprotein E epsilon4 allele is a risk factor for late-onset Alzheimer's disease and vascular dementia in Han Chinese.
- Author
-
Zhang JG, Yang JG, Lin ZX, He L, Feng GY, Ma XY, Wang CF, Lu PF, Song SB, Dong XZ, St Clair D, and Breen G
- Subjects
- Age of Onset, Aged, Aged, 80 and over, Alzheimer Disease ethnology, Apolipoprotein E4, Case-Control Studies, China ethnology, Dementia, Vascular ethnology, Female, Gene Frequency, Genotype, Humans, Male, Odds Ratio, Risk Factors, Alzheimer Disease genetics, Apolipoproteins E genetics, Asian People genetics, Dementia, Vascular genetics
- Published
- 2001
- Full Text
- View/download PDF
35. Optical-phonon emission in ballistic transport through microchannels of InGaAs.
- Author
-
Lu PF, Tsui DC, and Cox HM
- Published
- 1985
- Full Text
- View/download PDF
36. LO-phonon oscillations and electron freeze-out in transport through In-InP and Sn-InP contacts.
- Author
-
Lu PF, Tsui DC, and Cox HM
- Published
- 1987
- Full Text
- View/download PDF
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