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BIOCELL 2022年第2期46卷 535-545页

作者： AMOURA M.ABOU-EL-NAGA SHAKER A.MOUSA FAYEZ ALTHOBAITI EMAN FAYAD ENGY S.FAHIM Department of Zoology Faculty of ScienceMansoura UniversityMansouraEgypt The Pharmaceutical Research Institute Albany College of Pharmacy and Health SciencesRensselaerUSA Department of Biotechnology Faculty of SciencesTaif UniversityTaifSaudi Arabia

Testicular damage is one of the most hazardous effects as it’s associated with ***(Bu)is a highly toxic chemotherapeutic drug that affects *** male Swiss albino mice divided into six groups of 5 animals ***(oral 0.9%saline daily for 75 days);Mel(20 mg/kg/day orally for 30 days);ZnO NPs(5 mg/kg/day *** 30 days);BU(single *** of 40 mg/kg and then left for 45 days);BU+Mel(single 40 mg/kg dose of BU and left for 45 days followed by 20 mg/kg/day Mel for 30 days);BU+ZnO NPs(single dose of 40 mg/kg of BU and left for 45 days,then 5 mg/kg/day ZnO NPs for 30 days).Preparation and Characterization of ZnO *** from testis prepared for ultrastructural investigations using TEM after Masson’s trichrome and toluidine blue *** induced histological and ultrastructural damage of the ***,the present results could be concluded that Mel or ZnO NPs can protect the testicular tissue against ultrastructural alterations induced by BU by its antioxidant and anti-apoptotic effects.

关键词： Busulfan Melatonin zinc oxide nanoparticles Ultrastructure Testis Mice

A synergistic effect of zinc oxide nanoparticles and polyethylene butene improving the rheology of waxy crude oil

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Petroleum Research 2023年第2期8卷 217-225页

作者： Toyin Olabisi Odutola University of Port Harcourt Nigeria

This research examined the use of 75 nm zinc oxide nanoparticles(nano ZnO)and polyethylene butene(PEB)to decrease the viscosity of Nigerian waxy crude *** rheology of the crude oil was assessed by measuring the viscosity and shear stress of samples containing PEB at 500,1000,2000,3000,4000 or 5000 ppm and nano ZnO at 1,2,3 or 4 wt% between 10 and 35℃ at shear rates from 1.7 to 1020 s^(-1).Rheological modeling indicated that a power law pseudoplastic model was the best fit for the experimental data,giving a regression coefficient of *** addition of these inhibitors induced Newtonian fluid behavior in the crude samples such that the shear stress-shear rate relationship plots were linear at all *** optimum concentrations of the inhibitors in this study were 2000 ppm PEB(providing a 33% viscosity reduction)and 1 wt% nano ZnO(providing a 26% viscosity reduction).A combination of these additives at these concentrations provided a synergistic effect and gave a greater viscosity reduction of 41%.This work demonstrates that a blend of ZnO nanoparticles and PEB can improve the flowability of waxy crude.

关键词： Flow assurance Wax prevention zinc oxide nanoparticles Poly ethylene butene Niger Delta waxy crude

zinc oxide nanoparticles and epibrassinolide enhanced growth of tomato via modulating antioxidant activity and photosynthetic performance

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BIOCELL 2021年第4期45卷 1081-1093页

作者： MOHAMMAD FAIZAN AHMAD FARAZ SHAMSUL HAYAT JAVAID ABHAT FANGYUAN YU Collaborative Innovation Center of Sustainable Forestry in Southern China College of Forest ScienceNanjing Forestry UniversityNanjing210037China School of Life Sciences Glocal UniversitySaharanpur247121India Plant Physiology Laboratory Department of BotanyFaculty of Life SciencesAligarh Muslim UniversityAligarh202002India State Key Laboratory for Crop Genetics and Germplasm Enhancement College of AgricultureNanjing Agricultural UniversityNanjing210095China

Nanotechnology has greatly expanded the applications of nanoparticles(NPs)domain in the scientific *** this context,the zinc oxide nanoparticles(ZnO-NPs)and 24-epibrassinolide(EBL)has been revealed to positively regulate plant metabolism and *** the present study,we investigated the role of ZnO-NPs and EBL in the regulation of plant growth,photosynthetic efficiency,enzymes activities and fruit yield in *** treatment of ZnO-NPs at three levels(10,50 or 100 ppm)and EBL(10^(−8) M)were applied separately or in combination to the foliage of plant at 35-39 days after sowing(DAS);and the control plants were treated with double distilled water(DDW)only at the same time *** different tested concentrations of ZnO-NPs and/or EBL,the combined spray of 50 ppm of ZnO-NPs and 10^(−8) M of EBL proved to be best,and considerably increased the growth,photosynthetic efficiency,biochemical enzymes activities as well as fruit ***,the performance of the antioxidant enzymes viz catalase,peroxidase and superoxide dismutase were also increased after the combined application of ZnO-NPs and EBL in Lycopersicon ***,it is suggested that combined application of 50 ppm of ZnO-NPs and 10−8 M of EBL is the best combination can be applied to increase the performance and yield of ***.

关键词： Antioxidant enzymes 24-epibrassinolide Lycopersicon esculentum zinc oxide nanoparticles

Detoxication and Theranostic Aspects of Biosynthesised zinc oxide nanoparticles for Drug Delivery

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Acta Metallurgica Sinica(English Letters) 2021年第5期34卷 729-740页

作者： Krishnaswamy Kanagamani Pitchaipillai Muthukrishnan Ayyasami Kathiresan Karikalan Shankar Pandurengan Sakthivel Murugan Ilayaraja Department of Chemistry SNS College of TechnologyCoimbatore641035India Department of Chemistry Faculty of EngineeringKarpagam Academy of Higher EducationCoimbatore641021India Department of Physics Faculty of EngineeringKarpagam Academy of Higher EducationCoimbatore641021India Department of Chemistry Arumugam Pillai Seethai Ammal CollegeTirupattur630211India

Bioactive materials obtained from plant bio-resources offer immense attention for development and production of nanotechnology enabled products for biomedical *** the present study,Ficus hispida leaf extract(FHLE)was used as a stabilising agent for the environmentally benign synthesis of zinc oxide nanoparticles(ZnO-NPs)which were investigated for prospective versatile applications(anticancer and photocatalytic activities).The formation of ZnO-NPs was confirmed by UV–visible ***(hexagonal)form of the herb-assisted synthesised ZnO-NPs with particle size ranging from 20 to 200 nm was confirmed by transmission electron microscopy(TEM)*** vitro analysis was carried out against Dalton's lymphoma ascites(DLA)cell lines by trypan blue assay,the results revealed 96%inhibition at concentration of 200μg ml-1,and the photodegradation experiments carried out for degradation of Congo red revealed complete degradation of the dye after 70 min of exposure to UV light.

关键词： zinc oxide nanoparticles Anticancer activity Photocatalysis Congo red

Three‑Dimensional Ordered Mesoporous Carbon Spheres Modified with Ultrafine zinc oxide nanoparticles for Enhanced Microwave Absorption Properties

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Nano-Micro Letters 2021年第5期13卷 61-76页

作者： Yan Song Fuxing Yin Chengwei Zhang Weibing Guo Liying Han Ye Yuan School of Materials Science and Engineering Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control TechnologyHebei University of TechnologyTianjin 300130People’s Republic of China

Currently,electromagnetic radiation and interference have a significant effect on the operation of electronic devices and human health ***,developing excellent microwave absorbers have a huge significance in the material research ***,a kind of ultrafine zinc oxide(ZnO)nanoparticles(NPs)supported on three-dimensional(3D)ordered mesoporous carbon spheres(ZnO/OMCS)is prepared from silica inverse opal by using phenolic resol precursor as carbon *** prepared lightweight ZnO/OMCS nanocomposites exhibit 3D ordered carbon sphere array and highly dispersed ultrafine ZnO NPs on the mesoporous cell walls of carbon ***/OMCS-30 shows microwave absorbing ability with a strong absorption(−39.3 dB at 10.4 GHz with a small thickness of 2 mm)and a broad effective absorption bandwidth(9.1 GHz).The outstanding microwave absorbing ability benefits to the well-dispersed ultrafine ZnO NPs and the 3D ordered mesoporous carbon spheres *** work opened up a unique way for developing lightweight and high-efficient carbon-based microwave absorbing materials.

关键词： Three-dimensional ordered structure Mesoporous carbon spheres zinc oxide nanoparticles Microwave absorption

Effect of zinc oxide nanoparticles on Denitrification and Denitrifying Bacteria Communities in Typical Estuarine Sediments

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Journal of Ocean University of China 2021年第3期20卷 599-607页

作者： CHEN Xi XIANG Zhuangzhuang REN Zhaomeng HUANG Xiao LI Hui SUN Pengfei BAI Jie College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China College of Marine Life Sciences Ocean University of ChinaQingdao 266003China Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution ControlSchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China Key Laboratory of Marine Environmental Science and Ecology Ministry of EducationOcean University of ChinaQingdao 266100China

For revealing the effects of increasing of zinc oxide nanoparticles(ZnO NPs)on denitrification and denitrifying bacteria communities in estuarine sediments,the surface sediments of two typical estuaries(the Yangtze River Estuary and the Yellow River Estuary)were added with medium concentration(170mgL−1)and high concentration(1700mgL−1)of ZnO NPs for anaerobic cul-ture in *** concentration of NO_(3)^(−)and NO_(2)^(−),the reductase activity and denitrification rate were measured by physico-chemical analysis,nirS gene abundance and denitrifying bacteria communities by molecular biological *** results showed that ZnO NPs inhibited NO_(3)^(−), NO_(2)^(−)reduction process and NO_(3)^(−), NO_(2)^(−)reductase activity,and a stronger inhibition effect resulting from the higher ZnO NPs *** NPs decreased nirS gene abundance and community diversity of denitrifying *** addition,the inhibition degree of ZnO NPs on the denitrification process of sediments in different estuaries was *** results were of great significance for evaluating the potential ecological toxicity and risks of nanomaterials in estuaries.

关键词： zinc oxide nanoparticles denitrification denitrifying bacteria community estuarine sediments

zinc oxide nanoparticles affect neuroplasticity and spatial learning and memory ability in hippocampus of wistar rats

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Zinc oxide nanoparticles affect neuroplasticity and spatial ...

Evaluation of antibacterial activity of zinc oxide nanoparticles synthesized using phycobilins of Anabaena variabilis NTSS17

中国神经科学学会第四次会员代表大会暨第八届全国学术会议

作者： Da-Dong HAN~1 Jin-Xia ZHAO~2 Tao ZHANG~2 Guo-Gang REN~3 Zhuo YANG~(1 *) 1 Laboratory of Neurophysiology Medical School Nankai University Tianjin 300071 China 2 Laboratory of Bioinformatics Life Science Institute Nankai University Tianjin 300071 China 3 University of Hertfordshire Hatfield Herts AL10 9AB UK

＜正＞Objective zinc oxide nanoparticles（ZnO） are widely applied in toothpaste,beauty products,sunscreens, coating and textiles as base material or *** biological properties of the ZnO have been investigated in etiology,pathology,physiology and *** study focuses on the effects of ZnO nanoparticles on neuroplasticity and spatial learning and memory in hippocampus of Wistar *** underlined mechanism to interpret the interactive behaviour was studied *** Experimental methods involved using ZnO nanoparticles suspension （4mg/kg,0.4mg/mL,i.p.,b.i.w.） which was injected into 4-week-old male Wistar rats,for 8 weeks and subsequently long- term potentiation（LTP） and long-term depression（LTD） were evaluated and numerically *** water maze （MWM）,including place navigation test,spatial probe test and reversal acquisition phases,was also detected and ***’s and HE staining processes were employed in order to define pathological ***（1） It is shown that the LTP was significantly enhanced,including slope of field excitatory postsynaptic potential（fEPSP, 168.156±4.540） and amplitude of population spike（PS,286.872±16.587）,in rats treated by ZnO,compared to those of the control group（fEPSP,126.465±3.767;PS,175.773±10.042,P＜0.01,P＜0.01）.However,no change was found in the LTD and, neither the slope of fEPSP nor amplitude of the PS（P＞0.05） was shafted.（2） In the mentioned navigation test,the escape time was prolonged in rats treated by ZnO（18.355±2.956） compared with control group（10.838±2.346）.In spatial probe test, the ratio of time spent in the target quadrant（36.283±5.372） was reduced and the number of crossing the plate（2.8333+0.7923） was decreased in ZnO treated group compared with those of control group（6.667±0.803;55.817±3.051,P＜0.01,P＜0.01）.In reversal acquisition phase,the escape time was prolonged（18.384±4.404） in ZnO-treated group compared with that of control group（9.205±2.516,P＜0.01）.（3） Nissle’s staining

关键词： zinc oxide nanoparticles neuroplasticity LTP LTD spatial learning and memory Morris water Maze hippocampus

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Journal of Coastal Life Medicine 2015年第12期 944-949页

作者： Thangaraj Ramasamy Santhoshkumar Subramaniyam Dhanasekaran Dharumadurai Kala Karuppannan Alharbi Naiyf Sultan Arunachalam Chinnathambi Ali Alharbi Sulaiman Thajuddin Nooruddin School of Life Science Department of MicrobiologyBharathidasan UniversityTiruchirappalli 620024TamilnaduIndia Department of Botany Government Arts College(Autonomous)ThanthonimalaiKarur 639005TamilnaduIndia Department of Botany and Microbiology College of ScienceKing Saud UniversityRiyadh 11451Kingdom of Saudi Arabia

Objective:To evaluate the antibacterial activity of zinc oxide nanoparticles synthesized using phycobilins of Anabaena variabilis ***:The cyanobacterial isolate was collected from paddy field and morphologically identified as Anabaena variabilis NTSS17,that produces a pigment *** biosynthesized zinc nanoparticles were characterized by different spectroscopic and analytical techniques such as UV-visible spectrophotometer,Fourier transform infrared spectroscopy and X-ray diffraction which confirmed the formation of zinc ***:Antibacterial activity of zinc oxide nanoparticles was examined against Escherichia coli,Rhodococcus rhodochrous and Pseudomonas *** maximum zone of inhibition occurred at 5 mg/1000 mL concentration of zinc oxide ***:Due to potent antimicrobial and intrinsic properties of zinc oxide,it can be actively used for biomedical applications.

关键词： Anabaena variabilis NTSS17 Phycobilins zinc oxide nanoparticles Antibacterial activity

Biosynthesis of zinc oxide nanoparticles Using Ixora Coccinea Leaf Extract—A Green Approach

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Open Journal of Synthesis Theory and Applications 2016年第1期5卷 1-14页

作者： Snehal Yedurkar Chandra Maurya Prakash Mahanwar Department of Chemistry Guru Nanak Khalsa College Mumbai India Department of Polymer and Surface Engineering Institute of Chemical Technology Mumbai India

Green synthesis of metal oxide nanoparticles using plant extract is a promising alternative to traditional method of chemical synthesis. In this paper, we report the synthesis of nanostructured zinc oxide particles by biological method. Highly stable and spherical zinc oxide nanoparticles are produced by using zinc acetate and Ixora coccinea leaf extract. Formation of zinc oxide nanoparticles has been confirmed by UV-Vis absorption spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Dynamic light scattering analysis (DLS), zetapotential study and Scanning Electron Microscope with the Energy Dispersive X-ray studies (EDX). Dynamic light scattering analysis shows average particle size of 145.1 nm whereas high zeta potential value confirms the stability of formed zinc oxide nanoparticles. The Scanning Electron Microscope reveals spherical morphology of nanoparticles and Energy Dispersive X-ray analysis confirms the formation of highly pure zinc oxide nanoparticles. The zinc oxide nanoparticles from Ixora coccinea leaves are expected to have applications in biomedical, cosmetic industries, biotechnology, sensors, medical, catalysis, optical device, coatings, drug delivery and water remediation, and also may be applied for electronic and magneto-electric devices. This new eco-friendly approach of synthesis is a novel, cheap, and convenient technique suitable for large scale commercial production.

关键词： zinc oxide nanoparticles Ixora coccinea Green Synthesis XRD DLS EDX

Synthesis and Characterization of zinc oxide and zinc oxide Doped with Chlorine nanoparticles as Novel <i>α</i>-Amylase Inhibitors

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Food and Nutrition Sciences 2021年第3期12卷 308-318页

作者： A. Al-Arfaj Ahlam N. Abd El-Rahman Soheir Department of Chemistry College of Science Imam Abdulrahman Bin Faisal University Dammam KSA Crops Technology Research Department Food Technology Research Institute Agricultural Research Center Giza Egypt

In this study we used a chemical solution method from oxalic acid (OX. acid) and zinc acetate (ZnAc) to prepare zinc oxide nanoparticles (ZnONPs) and zinc oxide nanoparticles doped with Chlorine (Cl:ZnONPs). The characterizations (FTIR, X-ray, SEM, TEM) of ZnONPs and Cl:ZnONPs were determined. Amylase inhibitors of ZnONPs and Cl:ZnONPs also were determined. SEM indicated that the ZnONPs and Cl:ZnONPs have an average particle size of 46.65 - 74.64 nm. TEM images of the ZnONPs and Cl:ZnONPs showed the round shaped. Compounds b, d and e exhibited significant inhibitory activity against amylase enzyme (from 69.21 ± 1.44 to 76.32 ± 0.78), respectively, and were comparable with that of acarbose (86.32 ± 0.63) at 1000