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Olfaction and reaction: The role of olfactory and hypothalamic investment in the antipredator responses to chemical alarm cues by northern redbelly dace

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Current Zoology 2023年第6期69卷 738-746页

作者： Brendan J.joyce Grant e.Brown Department of Biology Concordia UniversityMontrealQuebecCanada

Neuroplasticity enables teleosts to promote or downregulate the growth of their brains *** compensate for the effects of predation pressure,teleosts may alter their brain morphology and behavioral responses to mitigate its impact on individual ***-predation environ-ments often promote specific patterns of brain growth and produce bolder and more proactive *** to the expense of maintaining neural tissue,relative size indicates the regions most relied *** northern redbelly dace Chrosomus eos,as little as 2 weeks of elevated predation pressure,resulted in increased investment in their olfactory bulbs and optic tecta,while the imposition of captivity produced smaller,less symmetric *** together,these results suggest that an individual could potentially become better able to detect a threat,and simultaneously less inclined to react to it,making the impact of either change in isolation is difficult to ***,we compared interindividual variation in gross brain morphology,risk-taking tactics in a novel arena(shy-bold personality),and responding to olfactory cues(proactive/reac-tive stress-coping style).We hypothesized that olfactory investment would positively correlate with response intensity to predator cue concen-tration and respond across a wider range of cue concentrations,while hypothalamus size would correlate with shyness and *** to heightened risk produced more bold/proactive individuals,with larger olfactory bulbs and smaller ***,the direction of the correlation between hypothalamus size and behavior varied by treatment,and olfactory investment only corresponded with response intensity amongst proactive *** findings illustrate the potential pitfalls of relating gross brain morphology to complex behavior and suggest that stress-coping style is a relevant consideration in future studies.

关键词： boldness brainmorphology neuroplasticity predation proactivity stress-coping style

extract of Codiaeum luzonicum Merr. overcomes multidrug resistance in human colon cancer cells by modulating P-glycoprotein

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Asian Pacific Journal of Tropical Biomedicine 2022年第9期12卷 400-410页

作者： Regina joyce e.Ferrer Marc Justin C.Ong Sonia D.Jacinto Institute of Biology University of the Philippines DilimanQuezon CityMetro ManilaPhilippines

Objective:To investigate anti-multidrug resistance(MDR)activity and safety of the bioactive fraction(CL11)from Codiaeum luzonicum crude leaf ***:Cytotoxic activity of CL11 against MDR and nonresistant colon cancer cells was assessed using MTT *** of cell death was investigated by annexin V-propidium iodide staining,TUNeL,and JC-1 *** examine mechanism of action,the effect on the expression and function of the MDR-implicated protein P-glycoprotein was tested using Western blotting and calcein assay,***:CL11 had an eC50 of 0.18,1.03 and 38.52µg/mL against HCT-15,HCT-15/Dox and HCT116,*** was mediated by inhibition of P-glycoprotein function and *** mode of cell death involved mitochondrial membrane depolarization and was mostly non-apoptotic at eC50 concentrations against HCT-15 and HCT-15/***:Fraction CL11 of Codiaeum luzonicum induces nonapoptotic cell death in MDR cancer cells by overcoming MDR through inhibition of P-glycoprotein expression and function.

关键词： Natural product Leaf extract Codiaeum luzonicum MDR cancer P-gp inhibitor Colorectal cancer

Lipid and Fatty Acid Compositions of Cod (Gadus morhua),Haddock (Melanogrammus aeglefinus) and Halibut (Hippoglossus hippoglossus)

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Journal of Ocean University of China 2010年第4期9卷 381-388页

作者： ZeNG Duan MAI Kangsen AI Qinghui joyce e. Milley Santosh P. Lall The Key Laboratory of Mariculture Ministry of Education of China Ocean University of China Qingdao 266003 P. R. China National Research Council of Canada Institute for Marine Biosciences 1411 Oxford Street Halifax Nova Scotia B3H 3Z1 Canada

This study was conducted to compare lipid and fatty acid composition of cod,haddock and *** groups of cod（276 g±61 g）,haddock（538 g±83 g）and halibut（3704 g±221 g）were maintained with commercial feeds mainly based on fish meal and marine fish oil for 12 weeks prior to *** fatty acid compositions of muscle and liver were determined by GC/FID after derivatization of extracted lipids into fatty acid methyl esters（FAMe）.Lipids were also fractionated into neutral and polar lipids using Waters silica Sep-Pak（R）.The phospholipid fraction was further separated by high-performance thin-layer chromatography（HPTLC）and the FAMe profile was *** of the present study showed that cod and haddock were lean fish and their total muscle lipid contents were 0.8% and 0.7%,respectively,with phospholipid constituting 83.6% and 87.5% of the total muscle lipid,*** was a medium-fat fish and its muscle lipid content was 8%,with 84% of the total muscle lipid being neutral *** liver lipid contents of cod,haddock and halibut were 36.9%,67.2% and 30.7%,respectively,of which the neutral lipids accounted for the major fraction（88.1%-97.1%）.Polyunsaturated fatty acids were the most abundant in cod and haddock muscle neutral *** fatty acid level was the highest in halibut muscle neutral *** acid compositions of phospholipid were relatively *** summary,the liver of cod and haddock as lean fish was the main lipid reserve organ,and structural phospholipid is the major lipid form in ***,as a medium-fat fish,halibut stored lipid in both their liver and muscle.

关键词： cod haddock halibut lipid fatty acids neutral lipid phospholipid liver muscle

3eciphering the protein-DNA code of bacteria Ninged helix-turn-helix transcription factors

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Frontiers of electrical and electronic engineering in China 2018年第1期6卷 68-84页

作者： Adam P. joyce James J. Havranek Program in Developmental Regenerative and Stem Cell Biology Washington University in St. Louis St. Louis MO 63110 USA Department of Biochemistry and Molecular Biophysics Washington University in St. Louis St. Louis MO 63110 USA

Background： Sequence-specific binding by transcription factors （TFs） plays a significant role in the selection and regulation of target genes. At the protein：DNA interface, amino acid side-chains construct a diverse physicochemical network of specific and non-specific interactions, and seemingly subtle changes in amino acid identity at certain positions may dramatically impact TF：DNA binding. Variation of these specificity-determining residues （SDRs） is a major mechanism of functional divergence between TFs with strong structural or sequence homology. Methods： In this study, we employed a combination of high-throughput specificity profiling by SeLeX and Spec-seq, structural modeling, and evolutionary analysis to probe the binding preferences of winged helix-turn-helix TFs belonging to the OmpR sub-family in escherichia coil Results： We found that e. coli OmpR paralogs recognize tandem, variably spaced repeats composed of＂GT-A＂ or ＂GCT＂-containing half-sites. Some divergent sequence preferences observed within the ＂GT-A＂ mode correlate with amino acid similarity; conversely, ＂GCT＂-based motifs were observed for a subset of paralogs with low sequence homology. Direct specificity profiling of a subset of OmpR homologues （CpxR, RstA, and OmpR） as well as predicted ＂SDR-swap＂ variants revealed that individual SDRs may impact sequence preferences locally through direct contact with DNA bases or distally via the DNA backbone. Conclusions： Overall, our work provides evidence for a common structural code for sequence-specific wHTH：DNA interactions, and demonstrates that surprisingly modest residue changes can enable recognition of highly divergent sequence motifs. Further examination of SDR predictions will likely reveal additional mechanisms controlling the evolutionary divergence of this important class of transcriptional regulators.

关键词： transcription factor SeLeX winged helix-turn-helix specificity detenlainants two-component signaling

草原田鼠和草甸田鼠波动种群雌鼠的攻击性(英文)

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兽类学报 2004年第2期24卷 125-131页

作者： joyce e. Hofmann Lowell L. Getz Illinois Natural History Survey 607 E. Peabody Dr.Champaign IL 61820 USA) (Department of Animal BiologyUniversity of IllinoisIllinois Natural History Survey 607 E. Peabody Dr.Champaign IL 61820 USA) (Department of Animal BiologyUniversity of Illinois 505 S. Goodwin Ave. Urbana IL 61801USA505 S. Goodwin Ave. Urbana IL 61801USA

本文比较研究了草原田鼠和草甸田鼠自然种群在不同密度周期时相雌鼠攻击水平的变化。结果表明,不同密度时相,草原田鼠种群中攻击雌鼠所占比例以及接近、威胁、进攻、退避,进攻/接近等5种行为变量均无显著的差异,5种行为变量与种群密度... 详细信息

本文比较研究了草原田鼠和草甸田鼠自然种群在不同密度周期时相雌鼠攻击水平的变化。结果表明,不同密度时相,草原田鼠种群中攻击雌鼠所占比例以及接近、威胁、进攻、退避,进攻/接近等5种行为变量均无显著的差异,5种行为变量与种群密度亦均不呈显著的线形相关关系。然而,草甸田鼠在不同密度时相攻击雌鼠的比例差异显著。低密度时相,雌鼠发生威胁行为的平均次数显著高于上升和衰减时相,进攻行为的平均次数亦显著高于其它时相。本研究结果不支持有关田鼠种群在一个完整的周期过程中具有多态性行为的假设。

关键词：草原田鼠草甸田鼠种群密度雌鼠攻击行为 Chitty假说

Delivery of acupuncture in clinical trials:Research acupuncturists’perspectives

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Journal of Integrative Medicine 2023年第4期21卷 315-319页

作者： joyce K.Anastasi Bernadette Capili Jessica Neumaier Londa Hackett Division of Special Studies in Symptom Management New York UniversityNew YorkNY 10010USA Heilbrunn Family Center for Research Nursing the Rockefeller UniversityNew YorkNY 10065USA

Delivery of acupuncture in the setting of a clinical trial is a unique practice that diverges significantly from the delivery of acupuncture in a real-world clinical setting. Research acupuncturists, particularly those trained in traditional Chinese medicine(TCM), are often required to set aside valued precepts of traditional care, including diagnosing imbalances, individualizing treatment, and forging a therapeutic relationship with patients. TCM-trained acupuncturists express mixed feelings about participating in clinical trials. Many are eager to play a vital role in the advancement of acupuncture science and appreciate the need for strict protocol adherence to minimize bias. However, the acupuncturist(s) may also have concerns about clinical trial methodology, including but not limited to the delivery of a control condition, e.g., sham acupuncture. Investigators should anticipate certain questions and even a level of resistance to the requirements of research among acupuncturists and be prepared to address them. This manuscript presents a brief review of the subjective experience of the research acupuncturist within the available scientific literature as it pertains to the delivery of active and sham clinical research protocols. Our goals are to better understand the perspectives of acupuncturists who may participate in clinical research, so that their concerns may be addressed in study design and methodology. To that end, we suggest the creation of a novel training program specifically for clinical trial acupuncturists, intended for qualified TCM-and Western-trained practitioners, that would help to standardize the research acupuncturist’s role and help to strengthen the design and execution of acupuncture studies.

关键词： Acupuncture Traditional Chinese medicine Clinical protocols Health knowledge,attitudes,practice Researcher-subject relationship Placebos

exploring the band structure of Wurtzite InAs nanowires using photocurrent spectroscopy

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Nano Research 2020年第6期13卷 1586-1591页

作者： Seyyedesadaf Pournia Samuel Linser Giriraj Jnawali Howard e.Jackson Leigh M.Smith Amira Ameruddin Philippe Caroff Jennifer Wong-Leung Hark Hoe Tan Chennupati Jagadish Hannah J.joyce Department of Physics University of CincinnatiCincinnatiOH45221-0011USA Department of electronic Materials engineering Research School of PhysicsThe Australian National UniversityCanberraACT2601Australia Department of engineering University of Cambridge9 JJ Thomson AvenueCambridgeCB30FAUK

Nano Research volume We use polarized photocurrent spectroscopy in a nanowire device to investigate the band structure of hexagonal Wurtzite *** of optical transitions between four valence bands and two conduction bands are observed which are consistent with the symmetries expected from group *** ground state transition energy identified from photocurrent spectra is seen to be consistent with photoluminescence emitted from a cluster of nanowires from the same growth *** the energies of the observed bands we determine the spin orbit and crystal field energies in Wurtzite *** information is vital to the development of crystal phase engineering of this important III-V semiconductor.

关键词： nanowires Wurtzite InAs photocurrent measurement optical selection rules energy band structure

exosomes:Small vesicles with big roles in cancer,vaccine development,and therapeutics

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Bioactive Materials 2022年第4期7卷 281-294页

作者： Abhimanyu Thakur Diana Carolina Parra Pedram Motallebnejad Marcelo Brocchi Huanhuan joyce Chen Pritzker School of Molecular engineering The University of ChicagoUnited States Ben May Department for Cancer Research The University of ChicagoUnited States Tropical Disease Laboratory Department of GeneticsEvolutionMicrobiology and ImmunologyInstitute of BiologyUniversity of Campinas(UNICAMP)S˜ao PauloBrazil

Cancer is a deadly disease that is globally and consistently one of the leading causes of mortality every *** the availability of chemotherapy,radiotherapy,immunotherapy,and surgery,a cure for cancer has not been ***,exosomes have gained significant attention due to the therapeutic potential of their various components including proteins,lipids,nucleic acids,miRNAs,and *** constitute a set of tiny extracellular vesicles with an approximate diameter of 30-100 *** are released from different cells and are present in biofluids including blood,cerebrospinal fluid(CSF),and *** perform crucial multifaceted functions in the malignant progression of cancer via autocrine,paracrine,and endocrine *** ability of exosomes to carry different cargoes including drug and molecular information to recipient cells make them a novel tool for cancer *** this review,we discuss the major components of exosomes and their role in cancer *** also review important literature about the potential role of exosomes as vaccines and delivery carriers in the context of cancer therapeutics.

关键词： Cancer exosome Therapeutics extracellular vesicles exosomal vaccine exosomal delivery system

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胶体二氧化硅在高光泽彩喷纸上的应用

中国造纸 2006年第8期25卷 14-17页

作者：颜进华 Margarat joyce 广东轻工职业技术学院 Western Michigan University MI49008USA

采用5种胶体SiO2(A、B、C、D、e)作为颜料制作彩色喷墨打印纸,并与常规的气相SiO2(FS)和气相Al2O3(FA)彩色喷墨打印纸进行比较。研究表明,与FA和FS相比,胶体SiO2具有提高光泽度的优越性。经epson打印机和HP打印机打印后,5种胶体SiO2彩... 详细信息

采用5种胶体SiO2(A、B、C、D、e)作为颜料制作彩色喷墨打印纸,并与常规的气相SiO2(FS)和气相Al2O3(FA)彩色喷墨打印纸进行比较。研究表明,与FA和FS相比,胶体SiO2具有提高光泽度的优越性。经epson打印机和HP打印机打印后,5种胶体SiO2彩喷纸中,A、B和C的色密度比FA和FS高;epson打印的墨点圆度都相似,FA和FS在墨点面积上都优于胶体SiO2;用HP打印的样品,墨点圆度和墨点面积与FA和FS样品没有区别。

关键词：胶体SiO2 彩喷纸高光泽打印质量