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Comparison of fatty acid composition in total lipid of diapause and non-diapause larvae of Cydia pomonella （Lepidoptera： Tortricidae）

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Insect Science 2007年第2期14卷 125-131页

作者： ABBAS KHANI SAEID MOHARRAMIPOUR MOHSEN BARZEGAR hossein naderi-manesh Department of Entomology College of Agriculture Tarbiat Modares UniversityTarbiat Modares University Tehran Iran Department of Food Science and Technology College of Agriculture Tarbiat Modares University Tarbiat Modares University Tehran Iran Department of Biophysics College of Basic Sciences Tarbiat Modares University Tehran Iran

Seasonal changes in the fatty acid composition of the total lipid extracted from the whole body of Cydia pomonella L. larvae were determined by gas chromatography. The six most abundant fatty acids in both non-diapause and diapause larvae of codling moth were oleic （35%-39%）, palmitic （23%-33%）, linoleic （16%-30%）, palmitoleic （5%-10%）, stearic （1.5%-3.0%） and linolenic acids （1.0%-2.5%）. This represents a typical complement of Lepidopteran fatty acids. The fatty acid composition of total lipid of C. pomonella larvae was related to diapause. In similarity to most other reports, the proportion of unsaturated fatty acids increased in diapause initiation state. The total lipid of diapause larvae contained more linoleic acid （25.8% vs. 16.1%） and less palmitic acid （24.7% vs. 33.4%）, than that of non-diapause larvae. The weight percentage of linoleic acid （C 18：2） increased from 16% to 26% from early-August through early-September during transition to diapause, while palmitic acid （C16：0） decreased from 33% to 25% at the same time. These changes resulted in an increase in the ratio of unsaturated to saturated fatty acids （UFA/SFA） from 1.72 in non-diapause larvae to 2.63 in diapause larvae.

关键词： codling moth Cydia pomonella diapause fatty acid composition lipid

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Cytotoxicity assessment of a gold nanoparticle-chitosan nanocomposite as an efficient support for cell immobilization:comparison with chitosan hydrogel and chitosan-gelatin

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BIOCELL 2014年第1期38卷 11-16页

作者： Mohammad Reza RAMEZANI hossein naderi-manesh Hossain-Ali RAFIEEPOUR Department of Biophysics Faculty of Biological SciencesTarbiat Modares UniversityTehranIran Department of Biotechnology Faculty of ChemistryUniversity of KashanKashanIran

Cell-based biosensors have become a research hotspot in the biosensors and bioelectronics fields. The main feature of cell-based biosensors is immobilization of living cells on the surface of transducers. Different types of polymers which are used as scaffolds for cell growth should be biocompatible and should have reac- tive functional groups for further attachment of biomolecules. In this work, cell attachment and proliferation on chitosan hydrogel, chitosan-gelatin and gold nanoparticle-chitosan nanocomposite membranes was stud- ied. Characterization of the membranes was performed using scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Cytotoxicity assessment on HEK293 cells was carried out for all mem- branes using the MTT assay. Cell morphology and viability were assessed to evaluate cell attachment and pro- liferation. Regarding cell studies, the findings revealed that none of the membranes induced cytotoxic effects. However, the data showed that gold nanoparticle nanocomposite membranes improved HEK293 attachment and adhesion more than other membranes, indicating that it provides an effective surface for immobilizing cells for sensing applications.

关键词： gold nanoparticle-chitosan nanocomposite HEK293 cells cytotoxic effects scanning electron microscopy

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Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2)Contamination of High-touch Surfaces in Field Settings

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Biomedical and Environmental Sciences 2020年第12期33卷 925-929页

作者： Sahar Gholipour Mahnaz Nikaeen Reza Mohammadi manesh Shima Aboutalebian Zahra Shamsizadeh Elahe Nasri hossein Mirhendi Department of Environmental Health Engineering School of HealthIsfahan University of Medical SciencesIsfahanIran Department of Environmental Health Engineering Faculty of HealthKashan University of Medical SciencesKashanIran Environment Research Center Research Institute for Primordial Prevention of Non-communicable DiseaseUniversity of Medical SciencesIsfahanIran Department of Medical Parasitology and Mycology School of MedicineIsfahan University of Medical SciencesIsfahanIran Infectious Diseases and Tropical Medicine Research Center Isfahan University of Medical SciencesIsfahanIran

The World Health Organization declared Coronavirus disease 2019(COVID-19)a public health emergency of international concern(PHEIC)[1].Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),the etiological agent of COVID-19,is an enveloped,single-stranded,positive-sense RNA *** severe acute respiratory syndrome coronavirus(SARS)and Middle East respiratory syndrome(MERS),the causative agent of COVID-19belongs to theβ-genus of the coronavirus family and has a genome sequence with an 82%similarity to that of SARS[1,2].Therefore,research on human coronaviruses,especially SARS-CoV and MERS-CoV,could be useful for predicting likely environmental fate and subsequent risks of SARS-CoV-2[1].

关键词： acute respiratory likely

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